diff --git a/.gitignore b/.gitignore
index 09410faac..cbdeae3fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -159,3 +159,4 @@ uv.lock
 IMPLEMENTATION_PLAN.md
 IMPLEMENTATION_SUMMARY.md
 TESTING_STATUS.md
+IMPLEMENTATION_PLAN.md
diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 000000000..b5d664068
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,204 @@
+# ADCP Python SDK - Agent Reference
+
+## Server Handler Methods
+
+Override these in your `ADCPHandler` subclass. Unimplemented methods return `not_supported()`.
+
+| Method | Domain | Request Type | Description |
+|---|---|---|---|
+| `get_adcp_capabilities` | protocol | GetAdcpCapabilitiesRequest | Declare supported domains/features |
+| `get_products` | media_buy | GetProductsRequest | Return ad products matching a brief |
+| `list_creative_formats` | media_buy | ListCreativeFormatsRequest | List available creative formats |
+| `create_media_buy` | media_buy | CreateMediaBuyRequest | Create a new media buy |
+| `update_media_buy` | media_buy | UpdateMediaBuyRequest | Update an existing media buy |
+| `get_media_buys` | media_buy | GetMediaBuysRequest | List media buys |
+| `get_media_buy_delivery` | media_buy | GetMediaBuyDeliveryRequest | Get delivery metrics |
+| `provide_performance_feedback` | media_buy | ProvidePerformanceFeedbackRequest | Send conversion data |
+| `sync_creatives` | media_buy | SyncCreativesRequest | Sync creative assets |
+| `list_creatives` | media_buy | ListCreativesRequest | List synced creatives |
+| `build_creative` | creative | BuildCreativeRequest | Generate a creative |
+| `preview_creative` | creative | PreviewCreativeRequest | Preview a creative |
+| `get_creative_delivery` | creative | GetCreativeDeliveryRequest | Get creative delivery tags |
+| `get_creative_features` | governance | GetCreativeFeaturesRequest | Get creative feature definitions |
+| `get_signals` | signals | GetSignalsRequest | Discover audience signals |
+| `activate_signal` | signals | ActivateSignalRequest | Activate a signal |
+| `list_accounts` | media_buy | ListAccountsRequest | List advertiser accounts |
+| `sync_accounts` | media_buy | SyncAccountsRequest | Sync account data |
+| `get_account_financials` | media_buy | GetAccountFinancialsRequest | Get financial details |
+| `report_usage` | media_buy | ReportUsageRequest | Report usage metrics |
+| `sync_event_sources` | media_buy | SyncEventSourcesRequest | Register conversion pixels |
+| `log_event` | media_buy | LogEventRequest | Log conversion events |
+| `sync_audiences` | media_buy | SyncAudiencesRequest | Sync audience segments |
+| `sync_catalogs` | media_buy | SyncCatalogsRequest | Sync product catalogs |
+| `sync_governance` | account | SyncGovernanceRequest | Sync governance config |
+| `create_content_standards` | governance | CreateContentStandardsRequest | Create content standards |
+| `get_content_standards` | governance | GetContentStandardsRequest | Get content standards |
+| `list_content_standards` | governance | ListContentStandardsRequest | List content standards |
+| `update_content_standards` | governance | UpdateContentStandardsRequest | Update content standards |
+| `calibrate_content` | governance | CalibrateContentRequest | Evaluate content compliance |
+| `validate_content_delivery` | governance | ValidateContentDeliveryRequest | Validate delivery compliance |
+| `get_media_buy_artifacts` | governance | GetMediaBuyArtifactsRequest | Get compliance artifacts |
+| `sync_plans` | governance | SyncPlansRequest | Sync campaign plans |
+| `check_governance` | governance | CheckGovernanceRequest | Check governance approval |
+| `report_plan_outcome` | governance | ReportPlanOutcomeRequest | Report plan outcomes |
+| `get_plan_audit_logs` | governance | GetPlanAuditLogsRequest | Get audit logs |
+| `si_get_offering` | sponsored_intelligence | SiGetOfferingRequest | Get SI offering details |
+| `si_initiate_session` | sponsored_intelligence | SiInitiateSessionRequest | Start SI session |
+| `si_send_message` | sponsored_intelligence | SiSendMessageRequest | Send SI message |
+| `si_terminate_session` | sponsored_intelligence | SiTerminateSessionRequest | End SI session |
+
+## Response Builders
+
+Import from `adcp.server.responses`:
+
+| Function | Returns | Use With |
+|---|---|---|
+| `capabilities_response(protocols)` | Capabilities dict | `get_adcp_capabilities` |
+| `products_response(products)` | Products dict | `get_products` |
+| `media_buy_response(id, packages)` | Media buy dict | `create_media_buy` |
+| `update_media_buy_response(id, packages)` | Updated buy dict | `update_media_buy` |
+| `media_buys_response(media_buys)` | Media buys list | `get_media_buys` |
+| `delivery_response(delivery)` | Delivery metrics | `get_media_buy_delivery` |
+| `creative_formats_response(formats)` | Formats list | `list_creative_formats` |
+| `sync_creatives_response(creatives)` | Sync results | `sync_creatives` |
+| `list_creatives_response(creatives)` | Creatives list | `list_creatives` |
+| `build_creative_response(manifest)` | Creative manifest | `build_creative` |
+| `preview_creative_response(previews)` | Preview URLs | `preview_creative` |
+| `signals_response(signals)` | Signals list | `get_signals` |
+| `activate_signal_response(signal)` | Activation result | `activate_signal` |
+| `sync_accounts_response(accounts)` | Sync results | `sync_accounts` |
+| `log_event_response(events)` | Log results | `log_event` |
+| `sync_catalogs_response(catalogs)` | Catalog results | `sync_catalogs` |
+| `error_response(code, message)` | Error dict | Any handler |
+| `media_buy_error_response(errors)` | Error dict | `create/update_media_buy` |
+
+## Type Guards
+
+Import from `adcp.types.guards` or `adcp`:
+
+```python
+from adcp import is_adcp_success, is_adcp_error
+
+if is_adcp_success(response):
+    print(response.media_buy_id)  # type-narrowed
+else:
+    print(response.errors)
+```
+
+## Common Error Codes
+
+| Code | Meaning | Recovery |
+|---|---|---|
+| `NOT_SUPPORTED` | Agent doesn't implement this task | Check capabilities first |
+| `INVALID_BUDGET` | Budget below minimum | Increase to minimum |
+| `INVALID_REQUEST` | Malformed request | Fix request params |
+| `MISSING_CREATIVE` | No creatives attached | Call sync_creatives first |
+| `MEDIA_BUY_NOT_FOUND` | Unknown media buy ID | Verify ID from create response |
+| `UNAUTHORIZED` | Missing/invalid auth | Check auth token |
+| `RATE_LIMITED` | Too many requests | Retry with backoff |
+
+## DX Helpers (adcp.server.helpers)
+
+Eliminate boilerplate in handler code. Import from `adcp.server` or `adcp.server.helpers`.
+
+### Error Responses
+
+```python
+from adcp.server import adcp_error
+
+# Auto-recovery from 20+ standard codes (transient/correctable/terminal)
+return adcp_error("BUDGET_TOO_LOW", "Budget $50 is below $500 minimum",
+                  field="budget", suggestion="Increase to at least $500")
+
+return adcp_error("RATE_LIMITED", retry_after=30)
+
+return adcp_error("PRODUCT_NOT_FOUND",
+    field="product_id",
+    suggestion="Use get_products to discover available products")
+```
+
+### Media Buy State Machine
+
+```python
+from adcp.server import valid_actions_for_status, is_terminal_status
+from adcp.server.responses import media_buy_response
+
+# Response builders auto-populate valid_actions from status
+resp = media_buy_response("mb_1", packages, status="active")
+# resp["valid_actions"] = ["pause", "cancel", "update_budget", ...]
+# resp["revision"] = 1  (auto-set)
+# resp["confirmed_at"] = "2026-..."  (auto-set)
+```
+
+### Account Resolution
+
+```python
+from adcp.server import resolve_account
+
+async def create_media_buy(self, params, context=None):
+    account, error = await resolve_account(params, self.find_account)
+    if error:
+        return error  # Auto-formatted ACCOUNT_NOT_FOUND response
+    # account is guaranteed non-None here
+```
+
+### Context Passthrough
+
+```python
+from adcp.server import inject_context
+
+async def get_products(self, params, context=None):
+    response = {"products": my_products}
+    return inject_context(params, response)  # Echoes params.context back
+```
+
+### Cancellation
+
+```python
+from adcp.server import cancel_media_buy_response
+
+# Auto-sets canceled_at=now, status="canceled", valid_actions=[]
+return cancel_media_buy_response("mb_1", "buyer", reason="Campaign ended")
+```
+
+### Decorator Builder (auto-capabilities)
+
+```python
+from adcp.server import adcp_server, serve
+
+server = adcp_server("my-seller")
+
+@server.get_products
+async def get_products(params, context=None):
+    return products_response(MY_PRODUCTS)
+
+# get_adcp_capabilities auto-generated from registered handlers
+serve(server, name="my-seller")
+```
+
+## Import Quick Reference
+
+```python
+# Client setup
+from adcp import ADCPClient, ADCPMultiAgentClient, AgentConfig
+
+# Request/response types
+from adcp.types import GetProductsRequest, CreateMediaBuyRequest, Product, Package
+
+# Response variant types (discriminated unions)
+from adcp.types.aliases import CreateMediaBuySuccessResponse, CreateMediaBuyErrorResponse
+
+# Type guards
+from adcp.types.guards import is_create_media_buy_success, is_adcp_error
+
+# Server framework
+from adcp.server import ADCPHandler, serve
+from adcp.server.responses import capabilities_response, products_response
+
+# DX helpers
+from adcp.server import adcp_error, valid_actions_for_status, resolve_account
+from adcp.server import inject_context, cancel_media_buy_response
+
+# Testing
+from adcp.testing import test_agent, creative_agent
+```
diff --git a/Makefile b/Makefile
index d0928d31a..1334f2849 100644
--- a/Makefile
+++ b/Makefile
@@ -53,6 +53,10 @@ regenerate-schemas: ## Download latest schemas and regenerate models
 	$(PYTHON) scripts/fix_schema_refs.py
 	@echo "Generating Pydantic models..."
 	$(PYTHON) scripts/generate_types.py
+	@echo "Consolidating exports..."
+	$(PYTHON) scripts/consolidate_exports.py
+	@echo "Generating ergonomic coercion..."
+	$(PYTHON) scripts/generate_ergonomic_coercion.py
 	@echo "✓ Schemas regenerated successfully"
 
 validate-generated: ## Validate generated code (syntax and imports)
diff --git a/llms.txt b/llms.txt
new file mode 100644
index 000000000..2181e714c
--- /dev/null
+++ b/llms.txt
@@ -0,0 +1,77 @@
+# adcp - Python SDK for Ad Context Protocol
+
+## What this is
+Python client and server library for ADCP, the agent-to-agent advertising protocol.
+Two use cases: (1) connect to ADCP agents as a buyer, (2) build ADCP agents as a seller.
+
+## Quick start: Connect as a buyer
+```python
+from adcp.testing import test_agent
+
+products = await test_agent.simple.get_products(
+    brief="Coffee subscription service",
+    buying_mode="brief",
+)
+print(f"Found {len(products.products)} products")
+```
+
+## Quick start: Build a seller agent
+```python
+from adcp.server import ADCPHandler, serve
+from adcp.server.responses import capabilities_response, products_response
+
+class MySeller(ADCPHandler):
+    async def get_adcp_capabilities(self, params, context=None):
+        return capabilities_response(["media_buy"])
+
+    async def get_products(self, params, context=None):
+        return products_response([
+            {"product_id": "p1", "name": "Premium Display",
+             "pricing_options": [{"pricing_model": "cpm", "floor_price": 5.0, "currency": "USD"}]}
+        ])
+
+serve(MySeller(), name="my-seller")
+```
+
+## Key modules
+- `adcp.client`: ADCPClient, ADCPMultiAgentClient (buyer-side)
+- `adcp.server`: ADCPHandler, serve, adcp_server, response builders (seller-side)
+- `adcp.server.helpers`: adcp_error, valid_actions_for_status, resolve_account, inject_context
+- `adcp.types`: All Pydantic types (Product, MediaBuy, Creative, etc.)
+- `adcp.types.guards`: Type guards (is_adcp_success, is_adcp_error, typed per-response guards)
+- `adcp.types.aliases`: Semantic names for discriminated union variants
+- `adcp.testing`: Pre-configured test agents (test_agent, creative_agent)
+- `adcp.exceptions`: Error hierarchy (ADCPError, ADCPTaskError with is_retryable)
+- `adcp.capabilities`: FeatureResolver, build_synthetic_capabilities, validate_capabilities
+
+## Framework auto-behaviors (seller-side)
+- adcp_error("CODE") auto-populates recovery classification from 20+ standard codes
+- media_buy_response(..., status="active") auto-populates valid_actions
+- resolve_account(params, resolver) auto-returns ACCOUNT_NOT_FOUND errors
+- inject_context(params, response) auto-echoes context passthrough
+- cancel_media_buy_response() auto-sets canceled_at, status, valid_actions
+- Decorator builder (adcp_server) auto-generates get_adcp_capabilities
+
+## Import conventions
+```python
+from adcp import ADCPClient, AgentConfig           # Client setup
+from adcp.types import Product, GetProductsRequest  # Domain types
+from adcp.types.aliases import CreateMediaBuySuccessResponse  # Union variants
+from adcp.types.guards import is_adcp_success       # Response handling
+from adcp.server import ADCPHandler, serve           # Server setup
+from adcp.server import adcp_error, resolve_account  # DX helpers
+from adcp.server.responses import products_response  # Response builders
+```
+
+## Validation
+```bash
+pytest tests/ -v          # Tests
+ruff check src/           # Linter
+mypy src/adcp/            # Type checker
+```
+
+## Do NOT read (generated, wastes context)
+- `src/adcp/types/generated_poc/` - auto-generated from schemas
+- `src/adcp/types/_generated.py` - consolidated generated exports
+- `src/adcp/types/_ergonomic.py` - auto-generated coercion
+- `schemas/` - raw JSON schemas
diff --git a/pyproject.toml b/pyproject.toml
index c7fba081e..330973971 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -97,6 +97,10 @@ warn_unused_configs = true
 module = "tests.*"
 disable_error_code = ["import-not-found", "no-untyped-def", "var-annotated", "operator"]
 
+[[tool.mypy.overrides]]
+module = "adcp.types.generated_poc.*"
+disable_error_code = ["valid-type"]
+
 [[tool.mypy.overrides]]
 module = "tests.integration.*"
 ignore_errors = true
diff --git a/schemas/cache/.hashes.json b/schemas/cache/.hashes.json
index e2902a23e..7985b9c9a 100644
--- a/schemas/cache/.hashes.json
+++ b/schemas/cache/.hashes.json
@@ -1,421 +1,3 @@
 {
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/index.json": "337965cc387d0863e16103ffe56092708470c8ceb3b5631b9b03b5c0b7944dbd",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/a2ui/component.json": "d22a41a4bf249e0a1f21a6c4ef3916d1c7733e0f048d68cfb2c8536f58566b9c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/a2ui/surface.json": "6cac1f60e2fc36ad4a768c94cc7e430151bc2a76e280ca55be43e356e643c78a",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/get-account-financials-request.json": "9fc44c2993a789fb81b26c444887abeceeb7e5b8ff74f3563cec896085a2723f",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/get-account-financials-response.json": "74665c6dfb358503e84dc92361ce1418a622bfb4ea9673c4fc5488168f9344ed",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/list-accounts-request.json": "ce85993a01c59171ce98105f08cd8a2d41b43d42f2e16cdc71063b235bef2bb8",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/list-accounts-response.json": "b7643a844da74a5645864bb9d8baa7d76692e564e242ee8792ceee0a2f248a75",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/report-usage-request.json": "c852c5c3e6a31ae23f27e0833055ef82e70c4140c7e86a5816634b358b7267dc",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/report-usage-response.json": "bb5b43da867fe14dfeb276107e65a41928debfeb156f6f3c3e88d7927ab1e2bd",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/sync-accounts-request.json": "64bbc9bed697ed2907d79d381960ff1318755493b4296a7198258b7e5ee44780",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/account/sync-accounts-response.json": "587aa9e2ac3ac6b04367c2a271d11243c8737b34ca2737980c30f91a053aa1ac",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/adagents.json": "b7c315a1450760c19937baeda27f1787826dbcb5246d0f867ea3e06d415ca034",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand.json": "ca89038a2f824bef21dc278d4d0c67ed8a16c37c7f642bea11daf66508b83f2e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/acquire-rights-request.json": "839decc5694aa5655046c29d01bab8697c8c175661fb824b8b923aa815093421",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/acquire-rights-response.json": "e06aceb0ef6481a68c573d88417f0b97c05105915b8d42fe55ba182717f1c2c7",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/get-brand-identity-request.json": "1df6ccf72d064930f8df0226a2a7a4f73634470b41459b944df8af86bcbf56b2",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/get-brand-identity-response.json": "2c81d0ab363c6cf7f3cd503c227d2a2473945713a3aa64f546a8e1f006730d60",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/get-rights-request.json": "1b9c5fa60d6cf68ca526e05306c2229bcee2fa726a896ae06992659ec784facd",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/get-rights-response.json": "aab827a8758099930b54d5b1d920b0564376b709a685d6e790f97136dc810c3d",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/rights-pricing-option.json": "c1cee083ec9d6030e0cecb33d77b07052c5d109d27d6365bc84266d81e16141e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/brand/rights-terms.json": "db321b8024870a6f4eb94d6f3057365ad9690a23029d418c0aa7d8a8b9976979",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/compliance/comply-test-controller-request.json": "fce05b8a5c210d3e1c026ac3bd2d94570d9fe8fd9cf117a5dea5c9b7995f9cff",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/compliance/comply-test-controller-response.json": "e8b4a8ab03bf838a109e7257d3a1796feb3d5d120692e1b2143d88ac0f6fff5a",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/artifact-webhook-payload.json": "c6377e352bd9956dc159be248358b01d53d1d344b73489216a96959fa1dc51f7",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/artifact.json": "8285b6a997d8c5a1aedb006adb3fac7eb82396ea14bb1266a291197d45eff57c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/calibrate-content-request.json": "6537170c634f47a495ceac13a77ffba136521c21170999021a59bede1a9a09b2",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/calibrate-content-response.json": "c596242076ce3906693f15423366213c644ade4129823c2a5025bfa1d1088047",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/content-standards.json": "7c30143ebf55fe0e0a0cc62ee8d67022f6ad78933303d570e3c3a557df8a0752",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/create-content-standards-request.json": "f57f73577da67b09dfe6cfe8aeb16b67b7ebf511acbe3deac0f68d22937e2a98",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/create-content-standards-response.json": "475bf8eaf344ad41340ac9d70882175515080d87cfea6a23a7607a0459ccaa50",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/get-content-standards-request.json": "b8e88888817daa42b47a03964d3c183368aa46691a1135a75a1447a50cb34d70",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/get-content-standards-response.json": "a35255bb6e312ae98ea43288f807b0634220363284d109e0f670afb346bb461e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/get-media-buy-artifacts-request.json": "138c4874bf2e6c6d2cd5323db092b3dab01962f2882eab7f3952f27108b7a472",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/get-media-buy-artifacts-response.json": "34bb1a0b998d4dda0f20330b6932886a81371e8e796b01bffe2fab3aaf3bdf0e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/list-content-standards-request.json": "edf0418927f439b6b8c67325b797a28322515fa2bb67dbb782e40c78eb909282",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/list-content-standards-response.json": "27609d784e94493d591a8304cd15eaf5355fc2276c7869ca7a10ea70345fdf19",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/update-content-standards-request.json": "562b9bb1c3be385ab506042123ea7e7ec59d72c3e58a9740c59289283481f5dd",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/update-content-standards-response.json": "e748c05d78a081645f833038c6a78977653e694fc50e9eb9d79abae324a1516c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/validate-content-delivery-request.json": "af16937eba4c1910e70ce0e7ac7872a4e82d32d5549330522ca7c93ddc8bd9d4",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/content-standards/validate-content-delivery-response.json": "37a89f390d7b652ef862b57d944a7e413a587677b68768fa1dc7cda3b48473c0",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/core/account-ref.json": "8e1aab16e9a3aa506422fc4b2966a141bff0fa0c90d6ecd328529fee1d56aa76",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/core/account.json": "cbb428cf9aadd7f72a872d1653fb0a27be5f4ea910bad1253e2a5f8185f11fd8",
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-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-submitted.json": "f8ebcd304481302386c2ef045df19cf38140c665ed239e5fe3643fd92a6a84fa",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-working.json": "f4b168032b63ac4364108b9a55fb208a410151831478af6908b8c5ad8e6fd84b",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/media-buy/update-media-buy-request.json": "7b6314d8d51c58d13a3a74c9b24c14242993031638194f98b2e70a86faffbcb9",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/media-buy/update-media-buy-response.json": "8c5e028ee6aef660be078f8d0aac07d980c470fd6f16fd61ab4d27455fbc06e6",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpa-option.json": "7ef564f00aaed132d366b63e190f38c8113a9e0aad9b14f699b40043b0fc511c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpc-option.json": "17052184378475ed4c7ae0596ebeff7f4eb4273bc52c5a86ee55b4298c15c05b",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpcv-option.json": "70c62a6ce4884a363041873f2ddc2ff9d69188e595241613ca5eb0bb7377288d",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpm-option.json": "9c8f67f5b9eebc468e1bf19d0dadce040144c2c8fbc852dfc7ee4960e6150d9a",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpp-option.json": "f8e2a1b595e2c015ed90562e89b397deb1108fcd15274693eeeca932a9b9376e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/cpv-option.json": "0861ee0f8708e00c1e735da674196b4d7ede2d53148817a5aabfad82b1cd000c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/flat-rate-option.json": "e87f1b97fc6bf1cf354e8fe3036acdbc8ce7e8859947dd19b582a47c9a060d8f",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json": "dc551f6ece12b113a218827a4611c1e378b4a0f4039ac7cd2a88df836d01eb15",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/price-guidance.json": "fa9be1fe78912ada620660114ccb6bd28c934a1a69d1d0468fbf47e6ea53fb14",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/time-option.json": "d78562e7a6bb9c3b4ae3f371006c7aa34f26bf8fe1a3d3bf6769a154e1f939a5",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/pricing-options/vcpm-option.json": "d063433f887ef93d65e0b00d0f38405800d25df3cc004aed610a419651f86f53",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/base-property-source.json": "99aad90385fd492a06a59c3f7cac5c138f206d9ab78f0a9efc3d10313832b74a",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/create-property-list-request.json": "17ea0c2a02269a9bf8bd471e9ee8d9f206288bcd067d21bf1213047287269d62",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/create-property-list-response.json": "17be2f2681904df49370de3563f87e074a028d231f9e9fcfe32412b05f76989c",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/delete-property-list-request.json": "30da92efcaa1c9411149a630e9e11d51d268f41af33b4835378080cf3ad8f2cf",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/delete-property-list-response.json": "9a621c5c7da0eaf6b66cc80d70030df09cc4652392424ad645952006e5be95b8",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/feature-requirement.json": "6c4f49667316188dd99ccac8024861eed5596732d8f5c99ea1b10da9ca737f4e",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/get-property-list-request.json": "7e48fb867f9115f28342007ab35e8b111ffe91d9efaebd5f5831d130c929893f",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/get-property-list-response.json": "fa147328c0fb59e198a164faeaa1ee0fda44b49f1abbf40e69fbd1ae16db2af2",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/list-property-lists-request.json": "e06b82c503dd9b57bf13a34402190aff0083869135668d0340492736b0a25ac5",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/list-property-lists-response.json": "a9b7f08b124a38ad472597636906c755e0811fcfbfebad9686ddc4ce343af20d",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-error.json": "3230b0b29e4697f526d94518cf6d2915de41483fde9da28454012502a9e657b7",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-feature-definition.json": "82c739c52cba58f213c2324e862dae03a9bfbb9d91db5bbc9120930fb51d0847",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-feature.json": "1f84891bbb2396750ced46a1003c9a905d449b98ec97c9e78538cf64987ceb43",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-list-changed-webhook.json": "352aa3578ca4c1b9b4d7000a50299facda0962f6b3e128d32728fb90604d7faa",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-list-filters.json": "184e25ef3ac8b1ba4cc821c092d14eedf53705ce831d333e4248def32c92af11",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/property-list.json": "762ba1152e2297955703ff227f79d06eb2165c5baa8d750615767a9fad6121fd",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/update-property-list-request.json": "1d9c177039a4fb2941a497786b4f091baede4bcd71703155c7f3a90d12752b9d",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/property/update-property-list-response.json": "a61161bfb9d390445abd40b5b54725eff102143ae6ada6f6ac47ae41585dc521",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/protocol/get-adcp-capabilities-request.json": "94610639e141f7ac641c30c146bc5c7ca5466fa450090bce512cbcb8b79604d6",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/protocol/get-adcp-capabilities-response.json": "e196bfc7639f4c264e583a51e13b3b019ee90a40b99e8179676ff7369f46bb6b",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/signals/activate-signal-request.json": "d4e16f6d1428698b5293a78f073b48885512ff8bb981c57facdaa109690916f3",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/signals/activate-signal-response.json": "35ff2816c8d0f0e7fc5fe75259e4c532b70c39f191de2d554508d6fd57452561",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/signals/get-signals-request.json": "bc9604bccac6ebec61abba05880a8ea42186ab9ee9e15f8fc8aef210e63cf043",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/signals/get-signals-response.json": "b7584fea368408465e08939e2b042a1d793b209e28c0202e8562dfd5191c1b0b",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-capabilities.json": "05656522cc3a54b30843577cea3003ca9cfcacd51adf34531766a090ae859159",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-get-offering-request.json": "3d3e75972390f72f750f88ef7c606552e7984609402453035b5ade47bc4a0ca3",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-get-offering-response.json": "f21cad7a07186263cb6cec1edb067895ad7023b460e5409e375af7a6f3fe08c9",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-identity.json": "935f99414805f861a35798f00efba45a7a6fb1a37a27414188c09ff29fb207b7",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-initiate-session-request.json": "4545e772d1d2bf3d4c772e84f05bd80e694b9ed6fb6cf751d231e86bb8e27419",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-initiate-session-response.json": "b26d4d0cd5cc22b159167ea2cf94a9207ceab68b9ebce567178aed90767cb6bf",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-send-message-request.json": "79ec92d648a717ecebf9a73d33e14c4cedb0afb71ae200f6564a4663bf0a9150",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-send-message-response.json": "8488bf1bd46c458eefca9da5c8fa1770c68854b0d844b36eb975ac720e5cecf7",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-terminate-session-request.json": "1082531d80e391afbdb4032960104122629b3bbabe9f97362a455183bf8378dc",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-terminate-session-response.json": "577bc52706084077807e310075dfea3b5ab8adb8deafbebee4b5e3540336d488",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/sponsored-intelligence/si-ui-element.json": "6751458039a4d92461ebb802508d7a84c1e3a77663bcbe0e889faa31d65e2fc8",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/available-package.json": "77bc5525df39439512203da0e19ee543341dd8a2fcbdc4e06eb98792140e1fd9",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/context-match-request.json": "3428a6d6ec496cf4046f333daf962187c447b334072b79fd771a3de517ebb5af",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/context-match-response.json": "cfaae7e62acf0a6771665e92508cc1fb9021e1181d16f473c06db4d1ffcf867f",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/error.json": "679bd6170f911d5ea3e49e445d7bc449832353f97b339d43851c2058b0823a1f",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/identity-match-request.json": "9bf6d05c935ad1f611ad18524a19604e1aa06c90a6881ccfecedeed39bdd5411",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/identity-match-response.json": "04aabe11b9cc2d163096ac417db37ab32204f71c4c83a87cc1024e6d3de9d1ef",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/offer-price.json": "b25c3e29f2ef9c7e7ef4b7713b03c9ab8b88dac5db8e8d764a2e67e04e6ebba1",
-  "https://adcontextprotocol.org/schemas/3.0.0-rc.3/tmp/offer.json": "f54fd8378bfe7d66131fd942611c9a47f9b0451bae1dc48a2cc0f09cdab50141"
+  "https://adcontextprotocol.org/schemas/latest/index.json": "2dfc2ef682b77180b0c9edb67f406bede432fd20f1980019af06a97159859ff1"
 }
\ No newline at end of file
diff --git a/schemas/cache/a2ui/component.json b/schemas/cache/a2ui/component.json
index e6ceec51d..6ddc3b14f 100644
--- a/schemas/cache/a2ui/component.json
+++ b/schemas/cache/a2ui/component.json
@@ -1,32 +1,31 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/a2ui/component.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "A2UI Component",
   "description": "A component in an A2UI surface",
+  "type": "object",
   "properties": {
-    "component": {
-      "additionalProperties": {
-        "description": "Component properties",
-        "type": "object"
-      },
-      "description": "Component definition (keyed by component type)",
-      "maxProperties": 1,
-      "minProperties": 1,
-      "type": "object"
-    },
     "id": {
-      "description": "Unique identifier for this component within the surface",
-      "type": "string"
+      "type": "string",
+      "description": "Unique identifier for this component within the surface"
     },
     "parentId": {
-      "description": "ID of the parent component (null for root)",
-      "type": "string"
+      "type": "string",
+      "description": "ID of the parent component (null for root)"
+    },
+    "component": {
+      "type": "object",
+      "description": "Component definition (keyed by component type)",
+      "minProperties": 1,
+      "maxProperties": 1,
+      "additionalProperties": {
+        "type": "object",
+        "description": "Component properties"
+      }
     }
   },
   "required": [
     "id",
     "component"
   ],
-  "title": "A2UI Component",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/a2ui/surface.json b/schemas/cache/a2ui/surface.json
index 1ce464dec..baf1865d4 100644
--- a/schemas/cache/a2ui/surface.json
+++ b/schemas/cache/a2ui/surface.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/a2ui/surface.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A contiguous UI region containing components",
@@ -12,7 +11,7 @@
     "components": {
       "description": "Flat list of components (adjacency list structure)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/a2ui/component.json"
+        "$ref": "component.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/account/get-account-financials-request.json b/schemas/cache/account/get-account-financials-request.json
index db43637be..dc7985b2d 100644
--- a/schemas/cache/account/get-account-financials-request.json
+++ b/schemas/cache/account/get-account-financials-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/get-account-financials-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request financial status for an operator-billed account. Returns spend summary, credit/balance status, and invoice history. Only applicable when the seller declares account_financials capability.",
@@ -42,17 +41,17 @@
   ],
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account to query financials for. Must be an operator-billed account."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "period": {
-      "$ref": "/schemas/3.0.0-rc.3/core/date-range.json",
+      "$ref": "../core/date-range.json",
       "description": "Date range for the spend summary. Defaults to the current billing cycle if omitted."
     }
   },
diff --git a/schemas/cache/account/get-account-financials-response.json b/schemas/cache/account/get-account-financials-response.json
index a0afe252b..ecaa75023 100644
--- a/schemas/cache/account/get-account-financials-response.json
+++ b/schemas/cache/account/get-account-financials-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/get-account-financials-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Financial status for an operator-billed account. Returns spend summary, credit/balance status, payment status, and invoice history. The level of detail varies by seller \u2014 only account, currency, and period are guaranteed on success.",
   "examples": [
@@ -94,7 +93,7 @@
       },
       "properties": {
         "account": {
-          "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+          "$ref": "../core/account-ref.json",
           "description": "Account reference, echoed from the request"
         },
         "balance": {
@@ -132,7 +131,7 @@
           "type": "object"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "credit": {
           "description": "Credit status. Present for credit-based accounts (payment_terms like net_30).",
@@ -165,7 +164,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "invoices": {
           "description": "Recent invoices. Sellers may limit the number returned.",
@@ -191,7 +190,7 @@
                 "type": "string"
               },
               "period": {
-                "$ref": "/schemas/3.0.0-rc.3/core/date-range.json",
+                "$ref": "../core/date-range.json",
                 "description": "Billing period covered by this invoice"
               },
               "status": {
@@ -237,7 +236,7 @@
           "type": "string"
         },
         "period": {
-          "$ref": "/schemas/3.0.0-rc.3/core/date-range.json",
+          "$ref": "../core/date-range.json",
           "description": "The actual period covered by spend data. May differ from the requested period if the seller adjusts to billing cycle boundaries."
         },
         "spend": {
@@ -302,18 +301,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/account/list-accounts-request.json b/schemas/cache/account/list-accounts-request.json
index 1f1079e94..8cf254921 100644
--- a/schemas/cache/account/list-accounts-request.json
+++ b/schemas/cache/account/list-accounts-request.json
@@ -1,17 +1,16 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/list-accounts-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for listing accounts accessible to the authenticated agent",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "sandbox": {
       "description": "Filter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with explicit accounts (require_operator_auth: true) where sandbox accounts are pre-existing test accounts on the platform.",
diff --git a/schemas/cache/account/list-accounts-response.json b/schemas/cache/account/list-accounts-response.json
index cd8934346..2afe44ecf 100644
--- a/schemas/cache/account/list-accounts-response.json
+++ b/schemas/cache/account/list-accounts-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/list-accounts-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for list_accounts task",
@@ -79,25 +78,25 @@
     "accounts": {
       "description": "Array of accounts accessible to the authenticated agent",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/account.json"
+        "$ref": "../core/account.json"
       },
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "errors": {
       "description": "Task-specific errors and warnings",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     }
   },
   "required": [
diff --git a/schemas/cache/account/report-usage-request.json b/schemas/cache/account/report-usage-request.json
index cad1fcf78..7146f5e09 100644
--- a/schemas/cache/account/report-usage-request.json
+++ b/schemas/cache/account/report-usage-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/report-usage-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Reports how a vendor's service was consumed after campaign delivery. Used by orchestrators (DSPs, storefronts) to inform vendor agents (signals, governance, creative) what was used so the vendor can track earned revenue and verify billing. Records can span multiple accounts and campaigns in a single request.",
@@ -61,17 +60,17 @@
   ],
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. If a request with the same key has already been accepted, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request. Prevents duplicate billing on retries.",
       "type": "string"
     },
     "reporting_period": {
-      "$ref": "/schemas/3.0.0-rc.3/core/datetime-range.json",
+      "$ref": "../core/datetime-range.json",
       "description": "The time range covered by this usage report. Applies to all records in the request."
     },
     "usage": {
@@ -80,7 +79,7 @@
         "additionalProperties": true,
         "properties": {
           "account": {
-            "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+            "$ref": "../core/account-ref.json",
             "description": "Account for this usage record."
           },
           "currency": {
diff --git a/schemas/cache/account/report-usage-response.json b/schemas/cache/account/report-usage-response.json
index 8c89d01d5..8a0fc81c0 100644
--- a/schemas/cache/account/report-usage-response.json
+++ b/schemas/cache/account/report-usage-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/report-usage-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response from report_usage. Partial acceptance is valid \u2014 records that pass validation are stored even when others fail.",
@@ -31,17 +30,17 @@
       "type": "integer"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "errors": {
       "description": "Validation errors for individual records. The field property identifies which record failed (e.g., 'usage[1].pricing_option_id').",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "sandbox": {
       "description": "When true, the account is a sandbox account and no billing occurred.",
diff --git a/schemas/cache/account/sync-accounts-request.json b/schemas/cache/account/sync-accounts-request.json
index 847c3aad9..50145dfbf 100644
--- a/schemas/cache/account/sync-accounts-request.json
+++ b/schemas/cache/account/sync-accounts-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/sync-accounts-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Sync advertiser accounts with a seller using upsert semantics. The agent declares which brands it represents, who operates on each brand's behalf, and the billing model. The seller provisions or links accounts accordingly, returning per-account status.",
@@ -123,11 +122,11 @@
             "type": "string"
           },
           "billing_entity": {
-            "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+            "$ref": "../core/business-entity.json",
             "description": "Business entity details for the party responsible for payment. The agent provides this so the seller has the legal name, tax IDs, address, and bank details needed for formal B2B invoicing."
           },
           "brand": {
-            "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+            "$ref": "../core/brand-ref.json",
             "description": "Brand reference identifying the advertiser. Uses the brand's house domain and optional brand_id from brand.json."
           },
           "operator": {
@@ -163,7 +162,7 @@
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "delete_missing": {
       "default": false,
@@ -176,10 +175,10 @@
       "type": "boolean"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Webhook for async notifications when account status changes (e.g., pending_approval transitions to active)."
     }
   },
diff --git a/schemas/cache/account/sync-accounts-response.json b/schemas/cache/account/sync-accounts-response.json
index afe84369e..82da86743 100644
--- a/schemas/cache/account/sync-accounts-response.json
+++ b/schemas/cache/account/sync-accounts-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/account/sync-accounts-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from account sync operation. Returns per-account results with status and billing, or operation-level errors on complete failure.",
   "examples": [
@@ -190,11 +189,11 @@
                 "type": "string"
               },
               "billing_entity": {
-                "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+                "$ref": "../core/business-entity.json",
                 "description": "Business entity details for the party responsible for payment, echoed from the request. Sellers MAY add fields the agent omitted (e.g., filling in registration_number from a credit check), but MUST NOT return data from a different entity. Bank details are omitted (write-only)."
               },
               "brand": {
-                "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+                "$ref": "../core/brand-ref.json",
                 "description": "Brand reference, echoed from the request"
               },
               "credit_limit": {
@@ -217,7 +216,7 @@
               "errors": {
                 "description": "Per-account errors (only present when action is 'failed')",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+                  "$ref": "../core/error.json"
                 },
                 "type": "array"
               },
@@ -304,14 +303,14 @@
           "type": "array"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "dry_run": {
           "description": "Whether this was a dry run (no actual changes made)",
           "type": "boolean"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
@@ -339,18 +338,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors (e.g., authentication failure, service unavailable)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/adagents.json b/schemas/cache/adagents.json
index 61205dee0..ecbd6def0 100644
--- a/schemas/cache/adagents.json
+++ b/schemas/cache/adagents.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/adagents.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Declaration of authorized agents for advertising inventory and data signals. Hosted at /.well-known/adagents.json on publisher domains (for properties) or data provider domains (for signals). Can either contain the full structure inline or reference an authoritative URL.",
   "examples": [
@@ -495,7 +494,7 @@
                   "collections": {
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/collection-selector.json"
+                      "$ref": "core/collection-selector.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -553,7 +552,7 @@
                   "property_ids": {
                     "description": "Property IDs this agent is authorized for. Resolved against the top-level properties array in this file",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/property-id.json"
+                      "$ref": "core/property-id.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -561,7 +560,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -597,7 +596,7 @@
                   "collections": {
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/collection-selector.json"
+                      "$ref": "core/collection-selector.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -655,7 +654,7 @@
                   "property_tags": {
                     "description": "Tags identifying which properties this agent is authorized for. Resolved against the top-level properties array in this file using tag matching",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/property-tag.json"
+                      "$ref": "core/property-tag.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -663,7 +662,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -699,7 +698,7 @@
                   "collections": {
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/collection-selector.json"
+                      "$ref": "core/collection-selector.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -757,7 +756,7 @@
                   "properties": {
                     "description": "Specific properties this agent is authorized for (alternative to property_ids/property_tags)",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/property.json"
+                      "$ref": "core/property.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -765,7 +764,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -801,7 +800,7 @@
                   "collections": {
                     "description": "Optional collection constraints. When present, authorization only applies to inventory associated with these collections.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/collection-selector.json"
+                      "$ref": "core/collection-selector.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -859,7 +858,7 @@
                   "publisher_properties": {
                     "description": "Properties from other publisher domains this agent is authorized for. Each entry specifies a publisher domain and which of their properties this agent can sell",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/publisher-property-selector.json"
+                      "$ref": "core/publisher-property-selector.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -867,7 +866,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -913,7 +912,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -959,7 +958,7 @@
                   "signing_keys": {
                     "description": "Optional publisher-attested public signing keys for this agent. Use these as the trust anchor for verifying signed agent responses instead of relying on key discovery from the agent domain alone.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/agent-signing-key.json"
+                      "$ref": "core/agent-signing-key.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -986,7 +985,7 @@
         "collections": {
           "description": "Collections produced or distributed by this publisher. Declares the content programs whose inventory is sold through authorized agents. Products in get_products responses reference these collections by collection_id.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/collection.json"
+            "$ref": "core/collection.json"
           },
           "type": "array"
         },
@@ -1065,7 +1064,7 @@
         "placements": {
           "description": "Canonical placement definitions for properties in this file. Products SHOULD reuse these placement_id values when exposing inventory in get_products, and authorized agents can scope authorization to these placement IDs.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/placement-definition.json"
+            "$ref": "core/placement-definition.json"
           },
           "minItems": 1,
           "type": "array"
@@ -1073,7 +1072,7 @@
         "properties": {
           "description": "Array of all properties covered by this adagents.json file. Defines the canonical property list that authorized agents reference.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/property.json"
+            "$ref": "core/property.json"
           },
           "minItems": 1,
           "type": "array"
@@ -1139,7 +1138,7 @@
         "signals": {
           "description": "Signal catalog published by this data provider. Signals agents reference these signals via data_provider_domain + signal_id.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/signal-definition.json"
+            "$ref": "core/signal-definition.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/brand.json b/schemas/cache/brand.json
index 64f820580..33214daac 100644
--- a/schemas/cache/brand.json
+++ b/schemas/cache/brand.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "definitions": {
     "asset": {
@@ -11,7 +10,7 @@
           "type": "string"
         },
         "asset_type": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/asset-content-type.json",
+          "$ref": "enums/asset-content-type.json",
           "description": "Type of asset content"
         },
         "description": {
@@ -219,7 +218,7 @@
                 "type": "string"
               },
               "role": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/talent-role.json",
+                "$ref": "enums/talent-role.json",
                 "description": "This person's role on the collection"
               },
               "seller_agent_url": {
@@ -289,7 +288,7 @@
         "industries": {
           "description": "Brand industries (e.g., ['automotive'] or ['healthcare.pharmaceutical', 'cpg'] for a consumer health company). Describes what the company does \u2014 not what regulatory regimes apply (use policy_categories for that). When create_media_buy omits advertiser_industry, sellers may infer from this field.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/advertiser-industry.json"
+            "$ref": "enums/advertiser-industry.json"
           },
           "minItems": 1,
           "type": "array"
@@ -1336,7 +1335,7 @@
         "available_uses": {
           "description": "Rights uses available for licensing through this agent",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+            "$ref": "enums/right-use.json"
           },
           "minItems": 1,
           "type": "array"
@@ -1357,7 +1356,7 @@
         "right_types": {
           "description": "Types of rights available",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/right-type.json"
+            "$ref": "enums/right-type.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/brand/acquire-rights-request.json b/schemas/cache/brand/acquire-rights-request.json
index 7b6843a77..c58ee48f7 100644
--- a/schemas/cache/brand/acquire-rights-request.json
+++ b/schemas/cache/brand/acquire-rights-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/acquire-rights-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Binding contractual request to acquire rights from a brand agent. Parallels create_media_buy \u2014 the buyer selects a pricing_option_id from a get_rights response and provides campaign details. The agent clears against existing contracts and returns terms, generation credentials, and disclosure requirements.",
   "properties": {
     "buyer": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "The buyer's brand identity"
     },
     "campaign": {
@@ -37,7 +36,7 @@
         "format_ids": {
           "description": "Creative formats that will be produced",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+            "$ref": "../core/format-id.json"
           },
           "type": "array"
         },
@@ -49,7 +48,7 @@
         "uses": {
           "description": "Specific rights uses for this campaign",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+            "$ref": "../enums/right-use.json"
           },
           "minItems": 1,
           "type": "array"
@@ -62,10 +61,10 @@
       "type": "object"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated key for safe retries. Resubmitting with the same key returns the original response rather than creating a duplicate acquisition. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -78,11 +77,11 @@
       "type": "string"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Webhook for async status updates if the acquisition requires approval. The rights agent sends a webhook notification when the status transitions to acquired or rejected."
     },
     "revocation_webhook": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Webhook for rights revocation notifications. If the rights holder needs to revoke rights (talent scandal, contract violation, etc.), they POST a revocation-notification to this URL. The buyer is responsible for stopping creative delivery upon receipt."
     },
     "rights_id": {
diff --git a/schemas/cache/brand/acquire-rights-response.json b/schemas/cache/brand/acquire-rights-response.json
index 020cb79ef..fe5bd1cc7 100644
--- a/schemas/cache/brand/acquire-rights-response.json
+++ b/schemas/cache/brand/acquire-rights-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/acquire-rights-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Result of a rights acquisition request. Returns one of three statuses: acquired (with terms and generation credentials), pending_approval (requires rights holder review), or rejected (with reason). Uses discriminated union on status field.",
   "oneOf": [
@@ -12,7 +11,7 @@
       },
       "properties": {
         "approval_webhook": {
-          "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+          "$ref": "../core/push-notification-config.json",
           "description": "Authenticated webhook for submitting creatives for approval. POST a creative-approval-request to the URL using the provided authentication. The response is a creative-approval-response."
         },
         "brand_id": {
@@ -20,7 +19,7 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "disclosure": {
           "additionalProperties": true,
@@ -41,12 +40,12 @@
           "type": "object"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "generation_credentials": {
           "description": "Scoped credentials for generating rights-cleared content",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/generation-credential.json"
+            "$ref": "../core/generation-credential.json"
           },
           "type": "array"
         },
@@ -58,7 +57,7 @@
           "type": "array"
         },
         "rights_constraint": {
-          "$ref": "/schemas/3.0.0-rc.3/core/rights-constraint.json",
+          "$ref": "../core/rights-constraint.json",
           "description": "Pre-built rights constraint for embedding in creative manifests. Populated from the agreed terms \u2014 the buyer does not need to construct it manually."
         },
         "rights_id": {
@@ -71,7 +70,7 @@
           "type": "string"
         },
         "terms": {
-          "$ref": "/schemas/3.0.0-rc.3/brand/rights-terms.json",
+          "$ref": "rights-terms.json",
           "description": "Agreed contractual terms"
         },
         "usage_reporting_url": {
@@ -102,7 +101,7 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "detail": {
           "description": "Explanation of what requires approval",
@@ -113,7 +112,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "rights_id": {
           "type": "string"
@@ -143,10 +142,10 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "reason": {
           "description": "Why the rights request was rejected. May be sanitized to protect confidential brand rules \u2014 e.g., 'This violates our public figures brand guidelines' rather than naming the specific rule.",
@@ -189,17 +188,17 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/brand/get-brand-identity-request.json b/schemas/cache/brand/get-brand-identity-request.json
index c0c4d7cd9..6ada8f377 100644
--- a/schemas/cache/brand/get-brand-identity-request.json
+++ b/schemas/cache/brand/get-brand-identity-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/get-brand-identity-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request brand identity data from a brand agent. Core identity (house, names, description, logos) is always public. Linked accounts get deeper data: high-res assets, voice configs, tone guidelines, and rights availability.",
@@ -9,10 +8,10 @@
       "type": "string"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "fields": {
       "description": "Optional identity sections to include in the response. When omitted, all sections the caller is authorized to see are returned. Core fields (brand_id, house, names) are always returned and do not need to be requested.",
diff --git a/schemas/cache/brand/get-brand-identity-response.json b/schemas/cache/brand/get-brand-identity-response.json
index bf151b11e..0ab4a0a1b 100644
--- a/schemas/cache/brand/get-brand-identity-response.json
+++ b/schemas/cache/brand/get-brand-identity-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/get-brand-identity-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Brand identity data from a brand agent. Core identity (house, names, description, logos) is always public. Authorized callers receive richer data (high-res assets, voice synthesis, tone guidelines, rights availability). Includes available_fields to signal what the caller could unlock by linking their account.",
   "oneOf": [
@@ -21,7 +20,7 @@
                 "type": "string"
               },
               "asset_type": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/asset-content-type.json",
+                "$ref": "../enums/asset-content-type.json",
                 "description": "Type of asset content"
               },
               "description": {
@@ -187,14 +186,14 @@
           "type": "object"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "description": {
           "description": "Brand description",
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "fonts": {
           "additionalProperties": true,
@@ -340,7 +339,7 @@
           "properties": {
             "available_uses": {
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+                "$ref": "../enums/right-use.json"
               },
               "type": "array"
             },
@@ -480,17 +479,17 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/brand/get-rights-request.json b/schemas/cache/brand/get-rights-request.json
index 7ffcdfa2f..967dc7432 100644
--- a/schemas/cache/brand/get-rights-request.json
+++ b/schemas/cache/brand/get-rights-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/get-rights-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Search for licensable rights across a brand agent's roster. Returns matches with pricing. Discovery is natural-language-first \u2014 no taxonomy for categories. The agent interprets intent from the query and filters based on the buyer's brand compatibility.",
@@ -9,11 +8,11 @@
       "type": "string"
     },
     "buyer_brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "The buyer's brand. The agent fetches the buyer's brand.json for compatibility filtering (e.g., dietary conflicts, competitor exclusions)."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "countries": {
       "description": "Countries where rights are needed (ISO 3166-1 alpha-2). Filters to rights available in these markets.",
@@ -24,7 +23,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "include_excluded": {
       "default": false,
@@ -32,7 +31,7 @@
       "type": "boolean"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json",
+      "$ref": "../core/pagination-request.json",
       "description": "Pagination parameters for large result sets"
     },
     "query": {
@@ -41,13 +40,13 @@
       "type": "string"
     },
     "right_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/right-type.json",
+      "$ref": "../enums/right-type.json",
       "description": "Filter by type of rights (talent, music, stock_media, etc.)"
     },
     "uses": {
       "description": "Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+        "$ref": "../enums/right-use.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/brand/get-rights-response.json b/schemas/cache/brand/get-rights-response.json
index 58477f420..fcc3d13d0 100644
--- a/schemas/cache/brand/get-rights-response.json
+++ b/schemas/cache/brand/get-rights-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/get-rights-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Licensable rights matching the search criteria, with pricing options. Each result is a complete snapshot of current availability (stateless, DDEX PIE pattern). Excluded results explain why they were filtered out.",
   "oneOf": [
@@ -12,7 +11,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "excluded": {
           "description": "Results that matched but were filtered out, with reasons",
@@ -46,7 +45,7 @@
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "rights": {
           "description": "Matching rights with pricing options, ranked by relevance",
@@ -56,7 +55,7 @@
               "available_uses": {
                 "description": "Rights uses available for licensing",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+                  "$ref": "../enums/right-use.json"
                 },
                 "type": "array"
               },
@@ -149,13 +148,13 @@
               "pricing_options": {
                 "description": "Available pricing options for these rights",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/brand/rights-pricing-option.json"
+                  "$ref": "rights-pricing-option.json"
                 },
                 "minItems": 1,
                 "type": "array"
               },
               "right_type": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/right-type.json"
+                "$ref": "../enums/right-type.json"
               },
               "rights_id": {
                 "description": "Identifier for this rights offering. Referenced in acquire_rights.",
@@ -192,17 +191,17 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/brand/rights-pricing-option.json b/schemas/cache/brand/rights-pricing-option.json
index f4806810f..a46f964b5 100644
--- a/schemas/cache/brand/rights-pricing-option.json
+++ b/schemas/cache/brand/rights-pricing-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/rights-pricing-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A pricing option for licensable rights. Separate from media-buy pricing options \u2014 rights pricing includes period, impression caps, overage rates, and use-type scoping.",
@@ -14,7 +13,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "impression_cap": {
       "description": "Maximum impressions included in this pricing option per period",
@@ -22,7 +21,7 @@
       "type": "integer"
     },
     "model": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/pricing-model.json",
+      "$ref": "../enums/pricing-model.json",
       "description": "Pricing model (cpm, flat_rate, etc.)"
     },
     "overage_cpm": {
@@ -54,7 +53,7 @@
     "uses": {
       "description": "Which rights uses this pricing option covers. A single option can bundle multiple uses (e.g., likeness + voice).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+        "$ref": "../enums/right-use.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/brand/rights-terms.json b/schemas/cache/brand/rights-terms.json
index 74ebfd6d2..ba0f6b84c 100644
--- a/schemas/cache/brand/rights-terms.json
+++ b/schemas/cache/brand/rights-terms.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/brand/rights-terms.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Contractual terms for a rights grant. Shared between acquire_rights and update_rights responses.",
@@ -61,7 +60,7 @@
     },
     "uses": {
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+        "$ref": "../enums/right-use.json"
       },
       "type": "array"
     }
diff --git a/schemas/cache/collection/base-collection-source.json b/schemas/cache/collection/base-collection-source.json
new file mode 100644
index 000000000..02a140a63
--- /dev/null
+++ b/schemas/cache/collection/base-collection-source.json
@@ -0,0 +1,117 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Base Collection Source",
+  "description": "A source of collections for a collection list. Supports three selection patterns: distribution identifiers (cross-publisher), publisher-specific collection IDs, or publisher-specific genres.",
+  "discriminator": {
+    "propertyName": "selection_type"
+  },
+  "oneOf": [
+    {
+      "type": "object",
+      "title": "Distribution IDs Source",
+      "description": "Select collections by platform-independent distribution identifiers. The primary mechanism for cross-publisher collection matching.",
+      "properties": {
+        "selection_type": {
+          "type": "string",
+          "const": "distribution_ids",
+          "description": "Discriminator indicating selection by platform-independent distribution identifiers"
+        },
+        "identifiers": {
+          "type": "array",
+          "description": "Platform-independent identifiers (imdb_id, gracenote_id, eidr_id, etc.). Each identifier uniquely identifies a collection across all publishers.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "type": {
+                "$ref": "../enums/distribution-identifier-type.json",
+                "description": "Type of distribution identifier"
+              },
+              "value": {
+                "type": "string",
+                "description": "The identifier value"
+              }
+            },
+            "required": [
+              "type",
+              "value"
+            ],
+            "additionalProperties": false
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "selection_type",
+        "identifiers"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "title": "Publisher Collections Source",
+      "description": "Select specific collections within a publisher's adagents.json by collection ID",
+      "properties": {
+        "selection_type": {
+          "type": "string",
+          "const": "publisher_collections",
+          "description": "Discriminator indicating selection by specific collection IDs within a publisher"
+        },
+        "publisher_domain": {
+          "type": "string",
+          "description": "Domain where publisher's adagents.json is hosted",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "collection_ids": {
+          "type": "array",
+          "description": "Specific collection IDs from the publisher's adagents.json",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        }
+      },
+      "required": [
+        "selection_type",
+        "publisher_domain",
+        "collection_ids"
+      ],
+      "additionalProperties": false
+    },
+    {
+      "type": "object",
+      "title": "Publisher Genres Source",
+      "description": "Select all collections from a publisher matching genre criteria. Use when excluding entire content categories from a specific publisher.",
+      "properties": {
+        "selection_type": {
+          "type": "string",
+          "const": "publisher_genres",
+          "description": "Discriminator indicating selection by genre within a publisher"
+        },
+        "publisher_domain": {
+          "type": "string",
+          "description": "Domain where publisher's adagents.json is hosted",
+          "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$"
+        },
+        "genres": {
+          "type": "array",
+          "description": "Genre values to match against the publisher's collections",
+          "items": {
+            "type": "string"
+          },
+          "minItems": 1
+        },
+        "genre_taxonomy": {
+          "$ref": "../enums/genre-taxonomy.json",
+          "description": "Taxonomy for the genre values. Required so sellers can interpret genre strings unambiguously. Use 'custom' for free-form values negotiated out of band."
+        }
+      },
+      "required": [
+        "selection_type",
+        "publisher_domain",
+        "genres",
+        "genre_taxonomy"
+      ],
+      "additionalProperties": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/collection-list-changed-webhook.json b/schemas/cache/collection/collection-list-changed-webhook.json
new file mode 100644
index 000000000..765123546
--- /dev/null
+++ b/schemas/cache/collection/collection-list-changed-webhook.json
@@ -0,0 +1,64 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection List Changed Webhook",
+  "description": "Webhook notification sent when a collection list's resolved collections change. Contains a summary only \u2014 recipients must call get_collection_list to retrieve the updated collections.",
+  "type": "object",
+  "properties": {
+    "event": {
+      "type": "string",
+      "const": "collection_list_changed",
+      "description": "The event type"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the collection list that changed"
+    },
+    "list_name": {
+      "type": "string",
+      "description": "Name of the collection list"
+    },
+    "change_summary": {
+      "type": "object",
+      "description": "Summary of changes to the resolved list",
+      "properties": {
+        "collections_added": {
+          "type": "integer",
+          "description": "Number of collections added since last resolution"
+        },
+        "collections_removed": {
+          "type": "integer",
+          "description": "Number of collections removed since last resolution"
+        },
+        "total_collections": {
+          "type": "integer",
+          "description": "Total collections in the resolved list"
+        }
+      },
+      "additionalProperties": false
+    },
+    "resolved_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was re-resolved"
+    },
+    "cache_valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the consumer should refresh from the governance agent"
+    },
+    "signature": {
+      "type": "string",
+      "description": "Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "event",
+    "list_id",
+    "resolved_at",
+    "signature"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/collection-list-filters.json b/schemas/cache/collection/collection-list-filters.json
new file mode 100644
index 000000000..c6ebf9966
--- /dev/null
+++ b/schemas/cache/collection/collection-list-filters.json
@@ -0,0 +1,90 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection List Filters",
+  "description": "Filters that dynamically modify a collection list when resolved. Include filters are allowlists (only matching collections pass). Exclude filters are blocklists (matching collections are removed). When both are present for the same dimension, include is applied first, then exclude narrows further.",
+  "type": "object",
+  "properties": {
+    "content_ratings_exclude": {
+      "type": "array",
+      "description": "Exclude collections with any of these content ratings (OR logic). This is a metadata filter on the collection's declared content_rating field \u2014 it does not evaluate episode content.",
+      "items": {
+        "$ref": "../core/content-rating.json"
+      },
+      "minItems": 1
+    },
+    "content_ratings_include": {
+      "type": "array",
+      "description": "Include only collections with any of these content ratings (OR logic). Collections without a declared content_rating are excluded.",
+      "items": {
+        "$ref": "../core/content-rating.json"
+      },
+      "minItems": 1
+    },
+    "genres_exclude": {
+      "type": "array",
+      "description": "Exclude collections tagged with any of these genres (OR logic). Values are interpreted against genre_taxonomy when present.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "genres_include": {
+      "type": "array",
+      "description": "Include only collections with any of these genres (OR logic). Collections without genre metadata are excluded. Values are interpreted against genre_taxonomy when present.",
+      "items": {
+        "type": "string"
+      },
+      "minItems": 1
+    },
+    "genre_taxonomy": {
+      "$ref": "../enums/genre-taxonomy.json",
+      "description": "Taxonomy for genre filter values. When present, genres_include and genres_exclude values are interpreted as taxonomy IDs."
+    },
+    "kinds": {
+      "type": "array",
+      "description": "Filter to these collection kinds",
+      "items": {
+        "type": "string",
+        "enum": [
+          "series",
+          "publication",
+          "event_series",
+          "rotation"
+        ]
+      },
+      "minItems": 1
+    },
+    "exclude_distribution_ids": {
+      "type": "array",
+      "description": "Always exclude collections with these distribution identifiers",
+      "items": {
+        "type": "object",
+        "properties": {
+          "type": {
+            "$ref": "../enums/distribution-identifier-type.json",
+            "description": "Type of distribution identifier"
+          },
+          "value": {
+            "type": "string",
+            "description": "The identifier value"
+          }
+        },
+        "required": [
+          "type",
+          "value"
+        ],
+        "additionalProperties": false
+      },
+      "minItems": 1
+    },
+    "production_quality": {
+      "type": "array",
+      "description": "Filter by production quality tier",
+      "items": {
+        "$ref": "../enums/production-quality.json"
+      },
+      "minItems": 1
+    }
+  },
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/collection-list.json b/schemas/cache/collection/collection-list.json
new file mode 100644
index 000000000..2df2801c7
--- /dev/null
+++ b/schemas/cache/collection/collection-list.json
@@ -0,0 +1,69 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection List",
+  "description": "A managed collection list with optional filters for dynamic evaluation. Lists are resolved at setup time and cached by orchestrators/sellers for real-time use. Collections represent programs, shows, and other content entities independent of which properties carry them.",
+  "type": "object",
+  "properties": {
+    "list_id": {
+      "type": "string",
+      "description": "Unique identifier for this collection list"
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the list's purpose"
+    },
+    "principal": {
+      "type": "string",
+      "description": "Principal identity that owns this list"
+    },
+    "base_collections": {
+      "type": "array",
+      "description": "Array of collection sources to evaluate. Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres). If omitted, queries the agent's entire collection database.",
+      "items": {
+        "$ref": "base-collection-source.json"
+      }
+    },
+    "filters": {
+      "$ref": "collection-list-filters.json",
+      "description": "Dynamic filters applied when resolving the list"
+    },
+    "brand": {
+      "$ref": "../core/brand-ref.json",
+      "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time."
+    },
+    "webhook_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to receive notifications when the resolved list changes"
+    },
+    "cache_duration_hours": {
+      "type": "integer",
+      "description": "Recommended cache duration for resolved list. Consumers should re-fetch after this period. Defaults to 168 (one week) because collection metadata changes less frequently than property metadata.",
+      "minimum": 1,
+      "default": 168
+    },
+    "created_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was created"
+    },
+    "updated_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was last modified"
+    },
+    "collection_count": {
+      "type": "integer",
+      "description": "Number of collections in the resolved list (at time of last resolution)"
+    }
+  },
+  "required": [
+    "list_id",
+    "name"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/create-collection-list-request.json b/schemas/cache/collection/create-collection-list-request.json
new file mode 100644
index 000000000..567615e77
--- /dev/null
+++ b/schemas/cache/collection/create-collection-list-request.json
@@ -0,0 +1,54 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Collection List Request",
+  "description": "Request parameters for creating a new collection list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "name": {
+      "type": "string",
+      "description": "Human-readable name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "Description of the list's purpose"
+    },
+    "base_collections": {
+      "type": "array",
+      "description": "Array of collection sources to evaluate. Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres). If omitted, queries the agent's entire collection database.",
+      "items": {
+        "$ref": "base-collection-source.json"
+      },
+      "minItems": 1
+    },
+    "filters": {
+      "$ref": "collection-list-filters.json",
+      "description": "Dynamic filters to apply when resolving the list"
+    },
+    "brand": {
+      "$ref": "../core/brand-ref.json",
+      "description": "Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time."
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for this request. Prevents duplicate collection list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "name"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/create-collection-list-response.json b/schemas/cache/collection/create-collection-list-response.json
new file mode 100644
index 000000000..ca177f926
--- /dev/null
+++ b/schemas/cache/collection/create-collection-list-response.json
@@ -0,0 +1,24 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Create Collection List Response",
+  "description": "Response payload for create_collection_list task",
+  "type": "object",
+  "properties": {
+    "list": {
+      "$ref": "collection-list.json",
+      "description": "The created collection list"
+    },
+    "auth_token": {
+      "type": "string",
+      "description": "Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time."
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list",
+    "auth_token"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/delete-collection-list-request.json b/schemas/cache/collection/delete-collection-list-request.json
new file mode 100644
index 000000000..5b6a1c374
--- /dev/null
+++ b/schemas/cache/collection/delete-collection-list-request.json
@@ -0,0 +1,34 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delete Collection List Request",
+  "description": "Request parameters for deleting a collection list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the collection list to delete"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255
+    }
+  },
+  "required": [
+    "list_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/delete-collection-list-response.json b/schemas/cache/collection/delete-collection-list-response.json
new file mode 100644
index 000000000..b0c11e1ba
--- /dev/null
+++ b/schemas/cache/collection/delete-collection-list-response.json
@@ -0,0 +1,24 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Delete Collection List Response",
+  "description": "Response payload for delete_collection_list task",
+  "type": "object",
+  "properties": {
+    "deleted": {
+      "type": "boolean",
+      "description": "Whether the list was successfully deleted"
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the deleted list"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "deleted",
+    "list_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/get-collection-list-request.json b/schemas/cache/collection/get-collection-list-request.json
new file mode 100644
index 000000000..b0c898f3c
--- /dev/null
+++ b/schemas/cache/collection/get-collection-list-request.json
@@ -0,0 +1,51 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Collection List Request",
+  "description": "Request parameters for retrieving a collection list with resolved collections",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the collection list to retrieve"
+    },
+    "resolve": {
+      "type": "boolean",
+      "description": "Whether to apply filters and return resolved collections (default: true)",
+      "default": true
+    },
+    "pagination": {
+      "type": "object",
+      "description": "Pagination parameters. Uses higher limits than standard pagination because collection lists can contain thousands of entries.",
+      "properties": {
+        "max_results": {
+          "type": "integer",
+          "minimum": 1,
+          "maximum": 10000,
+          "default": 1000,
+          "description": "Maximum number of collections to return per page"
+        },
+        "cursor": {
+          "type": "string",
+          "description": "Opaque cursor from a previous response to fetch the next page"
+        }
+      },
+      "additionalProperties": false
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/get-collection-list-response.json b/schemas/cache/collection/get-collection-list-response.json
new file mode 100644
index 000000000..db2b47b54
--- /dev/null
+++ b/schemas/cache/collection/get-collection-list-response.json
@@ -0,0 +1,125 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Get Collection List Response",
+  "description": "Response payload for get_collection_list task. Returns resolved collection entries with identification and key metadata for matching. Consumers should cache the resolved collections and refresh based on cache_valid_until.",
+  "type": "object",
+  "properties": {
+    "list": {
+      "$ref": "collection-list.json",
+      "description": "The collection list metadata (always returned)"
+    },
+    "collections": {
+      "type": "array",
+      "description": "Resolved collections that passed filters (if resolve=true). Each entry contains identification and key metadata for seller matching.",
+      "items": {
+        "type": "object",
+        "properties": {
+          "collection_rid": {
+            "type": "string",
+            "description": "Registry-assigned stable identifier for this collection. Present when the collection has been registered in the collection registry."
+          },
+          "name": {
+            "type": "string",
+            "description": "Human-readable collection name"
+          },
+          "distribution_ids": {
+            "type": "array",
+            "description": "Platform-independent identifiers for cross-publisher matching",
+            "items": {
+              "type": "object",
+              "properties": {
+                "type": {
+                  "$ref": "../enums/distribution-identifier-type.json",
+                  "description": "Type of distribution identifier"
+                },
+                "value": {
+                  "type": "string",
+                  "description": "The identifier value"
+                }
+              },
+              "required": [
+                "type",
+                "value"
+              ],
+              "additionalProperties": false
+            }
+          },
+          "content_rating": {
+            "$ref": "../core/content-rating.json",
+            "description": "Baseline content rating for this collection"
+          },
+          "genre": {
+            "type": "array",
+            "description": "Genre tags for this collection",
+            "items": {
+              "type": "string"
+            }
+          },
+          "genre_taxonomy": {
+            "$ref": "../enums/genre-taxonomy.json",
+            "description": "Taxonomy system for genre values"
+          },
+          "kind": {
+            "type": "string",
+            "enum": [
+              "series",
+              "publication",
+              "event_series",
+              "rotation"
+            ],
+            "description": "What kind of content program this is"
+          }
+        },
+        "required": [
+          "name"
+        ],
+        "additionalProperties": false
+      }
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
+    },
+    "resolved_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the list was resolved"
+    },
+    "cache_valid_until": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Cache expiration timestamp. Re-fetch the list after this time to get updated collections."
+    },
+    "coverage_gaps": {
+      "type": "object",
+      "description": "Collections included in the list despite missing metadata for a filtered dimension. Maps dimension name (e.g., 'genre', 'content_rating') to arrays of distribution identifiers for collections not covered. Only present when filters are applied and some collections lack the filtered metadata.",
+      "additionalProperties": {
+        "type": "array",
+        "items": {
+          "type": "object",
+          "properties": {
+            "type": {
+              "$ref": "../enums/distribution-identifier-type.json",
+              "description": "Type of distribution identifier"
+            },
+            "value": {
+              "type": "string",
+              "description": "The identifier value"
+            }
+          },
+          "required": [
+            "type",
+            "value"
+          ],
+          "additionalProperties": false
+        }
+      }
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/list-collection-lists-request.json b/schemas/cache/collection/list-collection-lists-request.json
new file mode 100644
index 000000000..4cbcbdea1
--- /dev/null
+++ b/schemas/cache/collection/list-collection-lists-request.json
@@ -0,0 +1,32 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Collection Lists Request",
+  "description": "Request parameters for listing collection lists",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "principal": {
+      "type": "string",
+      "description": "Filter to lists owned by this principal"
+    },
+    "name_contains": {
+      "type": "string",
+      "description": "Filter to lists whose name contains this string"
+    },
+    "pagination": {
+      "$ref": "../core/pagination-request.json"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/list-collection-lists-response.json b/schemas/cache/collection/list-collection-lists-response.json
new file mode 100644
index 000000000..949a7874f
--- /dev/null
+++ b/schemas/cache/collection/list-collection-lists-response.json
@@ -0,0 +1,25 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "List Collection Lists Response",
+  "description": "Response payload for list_collection_lists task",
+  "type": "object",
+  "properties": {
+    "lists": {
+      "type": "array",
+      "description": "Array of collection lists (metadata only, not resolved collections)",
+      "items": {
+        "$ref": "collection-list.json"
+      }
+    },
+    "pagination": {
+      "$ref": "../core/pagination-response.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "lists"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/update-collection-list-request.json b/schemas/cache/collection/update-collection-list-request.json
new file mode 100644
index 000000000..f777aceae
--- /dev/null
+++ b/schemas/cache/collection/update-collection-list-request.json
@@ -0,0 +1,62 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Collection List Request",
+  "description": "Request parameters for updating an existing collection list",
+  "type": "object",
+  "properties": {
+    "adcp_major_version": {
+      "type": "integer",
+      "description": "The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+      "minimum": 1,
+      "maximum": 99
+    },
+    "list_id": {
+      "type": "string",
+      "description": "ID of the collection list to update"
+    },
+    "name": {
+      "type": "string",
+      "description": "New name for the list"
+    },
+    "description": {
+      "type": "string",
+      "description": "New description"
+    },
+    "base_collections": {
+      "type": "array",
+      "description": "Complete replacement for the base collections list (not a patch). Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres).",
+      "items": {
+        "$ref": "base-collection-source.json"
+      }
+    },
+    "filters": {
+      "$ref": "collection-list-filters.json",
+      "description": "Complete replacement for the filters (not a patch)"
+    },
+    "brand": {
+      "$ref": "../core/brand-ref.json",
+      "description": "Update brand reference. Resolved to full brand identity at execution time."
+    },
+    "webhook_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "Update the webhook URL for list change notifications (set to empty string to remove)"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    },
+    "idempotency_key": {
+      "type": "string",
+      "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
+      "minLength": 16,
+      "maxLength": 255
+    }
+  },
+  "required": [
+    "list_id"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/collection/update-collection-list-response.json b/schemas/cache/collection/update-collection-list-response.json
new file mode 100644
index 000000000..a9bbe5cdd
--- /dev/null
+++ b/schemas/cache/collection/update-collection-list-response.json
@@ -0,0 +1,19 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Update Collection List Response",
+  "description": "Response payload for update_collection_list task",
+  "type": "object",
+  "properties": {
+    "list": {
+      "$ref": "collection-list.json",
+      "description": "The updated collection list"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
+    }
+  },
+  "required": [
+    "list"
+  ],
+  "additionalProperties": false
+}
\ No newline at end of file
diff --git a/schemas/cache/compliance/comply-test-controller-request.json b/schemas/cache/compliance/comply-test-controller-request.json
index 67b257530..181ac30df 100644
--- a/schemas/cache/compliance/comply-test-controller-request.json
+++ b/schemas/cache/compliance/comply-test-controller-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/compliance/comply-test-controller-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request payload for the comply_test_controller tool. Triggers seller-side state transitions for compliance testing. Sandbox only \u2014 sellers MUST NOT expose this tool in production.",
   "examples": [
@@ -73,10 +72,10 @@
       "description": "Discover which scenarios this seller supports",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "scenario": {
           "const": "list_scenarios",
@@ -94,10 +93,10 @@
       "description": "Transition a creative to the specified status",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
@@ -111,7 +110,7 @@
               "type": "string"
             },
             "status": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/creative-status.json"
+              "$ref": "../enums/creative-status.json"
             }
           },
           "required": [
@@ -137,10 +136,10 @@
       "description": "Transition an account to the specified status",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
@@ -150,7 +149,7 @@
               "type": "string"
             },
             "status": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/account-status.json"
+              "$ref": "../enums/account-status.json"
             }
           },
           "required": [
@@ -176,10 +175,10 @@
       "description": "Transition a media buy to the specified status",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
@@ -193,7 +192,7 @@
               "type": "string"
             },
             "status": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+              "$ref": "../enums/media-buy-status.json"
             }
           },
           "required": [
@@ -219,10 +218,10 @@
       "description": "Transition an SI session to a terminal status",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
@@ -267,10 +266,10 @@
       "description": "Inject synthetic delivery data for a media buy",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
@@ -335,10 +334,10 @@
       "description": "Simulate budget consumption to a specified percentage",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "params": {
           "additionalProperties": true,
diff --git a/schemas/cache/compliance/comply-test-controller-response.json b/schemas/cache/compliance/comply-test-controller-response.json
index 1925a1511..9df9563c1 100644
--- a/schemas/cache/compliance/comply-test-controller-response.json
+++ b/schemas/cache/compliance/comply-test-controller-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/compliance/comply-test-controller-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from the comply_test_controller tool. Shape varies by scenario type: list_scenarios returns available scenarios, force_* returns state transition results, simulate_* returns simulation results.",
   "examples": [
@@ -108,10 +107,10 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "scenarios": {
           "description": "Scenarios this seller has implemented",
@@ -164,14 +163,14 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "current_state": {
           "description": "State after this transition",
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "message": {
           "description": "Human-readable description of the transition",
@@ -218,7 +217,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "cumulative": {
           "additionalProperties": true,
@@ -226,7 +225,7 @@
           "type": "object"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "message": {
           "type": "string"
@@ -272,7 +271,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "current_state": {
           "description": "Current state of the entity, or null if not found",
@@ -299,7 +298,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "success": {
           "const": false,
diff --git a/schemas/cache/content-standards/artifact-webhook-payload.json b/schemas/cache/content-standards/artifact-webhook-payload.json
index 18094685a..5d672d24f 100644
--- a/schemas/cache/content-standards/artifact-webhook-payload.json
+++ b/schemas/cache/content-standards/artifact-webhook-payload.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/artifact-webhook-payload.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Payload sent by sales agents to orchestrators when pushing content artifacts for governance validation. Complements get_media_buy_artifacts for push-based artifact delivery.",
@@ -9,7 +8,7 @@
       "items": {
         "properties": {
           "artifact": {
-            "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+            "$ref": "artifact.json",
             "description": "The content artifact"
           },
           "delivered_at": {
@@ -39,7 +38,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "media_buy_id": {
       "description": "Media buy identifier these artifacts belong to",
diff --git a/schemas/cache/content-standards/artifact.json b/schemas/cache/content-standards/artifact.json
index bc9589d38..f63c65adf 100644
--- a/schemas/cache/content-standards/artifact.json
+++ b/schemas/cache/content-standards/artifact.json
@@ -65,7 +65,6 @@
       "type": "object"
     }
   },
-  "$id": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Content artifact for safety and suitability evaluation. An artifact represents content adjacent to an ad placement - a news article, podcast segment, video chapter, or social post. Artifacts are collections of assets (text, images, video, audio) plus metadata and signals.",
@@ -108,7 +107,7 @@
                 "type": "string"
               },
               "provenance": {
-                "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+                "$ref": "../core/provenance.json",
                 "description": "Provenance for this text block, overrides artifact-level provenance"
               },
               "role": {
@@ -155,7 +154,7 @@
                 "type": "integer"
               },
               "provenance": {
-                "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+                "$ref": "../core/provenance.json",
                 "description": "Provenance for this image, overrides artifact-level provenance"
               },
               "type": {
@@ -190,7 +189,7 @@
                 "type": "integer"
               },
               "provenance": {
-                "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+                "$ref": "../core/provenance.json",
                 "description": "Provenance for this video, overrides artifact-level provenance"
               },
               "thumbnail_url": {
@@ -252,7 +251,7 @@
                 "type": "integer"
               },
               "provenance": {
-                "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+                "$ref": "../core/provenance.json",
                 "description": "Provenance for this audio, overrides artifact-level provenance"
               },
               "transcript": {
@@ -301,7 +300,7 @@
       "type": "array"
     },
     "format_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+      "$ref": "../core/format-id.json",
       "description": "Optional reference to a format definition. Uses the same format registry as creative formats."
     },
     "identifiers": {
@@ -379,7 +378,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../core/provenance.json",
       "description": "Provenance metadata for this artifact. Serves as the default provenance for all assets within this artifact \u2014 individual assets can override with their own provenance."
     },
     "published_time": {
diff --git a/schemas/cache/content-standards/calibrate-content-request.json b/schemas/cache/content-standards/calibrate-content-request.json
index c451ef9f3..34dc64118 100644
--- a/schemas/cache/content-standards/calibrate-content-request.json
+++ b/schemas/cache/content-standards/calibrate-content-request.json
@@ -1,10 +1,9 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/calibrate-content-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request parameters for evaluating content during calibration. Multi-turn dialogue is handled at the protocol layer via contextId.",
   "properties": {
     "artifact": {
-      "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+      "$ref": "artifact.json",
       "description": "Artifact to evaluate"
     },
     "idempotency_key": {
diff --git a/schemas/cache/content-standards/calibrate-content-response.json b/schemas/cache/content-standards/calibrate-content-response.json
index 2b909e0d2..e0a90489c 100644
--- a/schemas/cache/content-standards/calibrate-content-response.json
+++ b/schemas/cache/content-standards/calibrate-content-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/calibrate-content-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload with verdict and detailed explanations for collaborative calibration",
   "oneOf": [
@@ -13,14 +12,14 @@
           "type": "number"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "explanation": {
           "description": "Detailed natural language explanation of the decision",
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "features": {
           "description": "Per-feature breakdown with explanations",
@@ -71,16 +70,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/content-standards/content-standards.json b/schemas/cache/content-standards/content-standards.json
index 808515d0c..0d07de637 100644
--- a/schemas/cache/content-standards/content-standards.json
+++ b/schemas/cache/content-standards/content-standards.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/content-standards.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A content standards configuration defining brand safety and suitability policies. Standards are scoped by brand, geography, and channel. Multiple standards can be active simultaneously for different scopes.",
   "properties": {
@@ -9,14 +8,14 @@
         "fail": {
           "description": "Artifacts that fail the content standards",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json"
+            "$ref": "artifact.json"
           },
           "type": "array"
         },
         "pass": {
           "description": "Artifacts that pass the content standards",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json"
+            "$ref": "artifact.json"
           },
           "type": "array"
         }
@@ -26,7 +25,7 @@
     "channels_any": {
       "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "minItems": 1,
       "type": "array"
@@ -40,7 +39,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "languages_any": {
       "description": "BCP 47 language tags (e.g., 'en', 'de', 'fr'). Standards apply to content in ANY of these languages (OR logic). Content in unlisted languages is not covered by these standards.",
@@ -61,7 +60,7 @@
     "pricing_options": {
       "description": "Pricing options for this content standards service. The buyer passes the selected pricing_option_id in report_usage for billing verification.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/pricing-option.json"
+        "$ref": "../core/pricing-option.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/content-standards/create-content-standards-request.json b/schemas/cache/content-standards/create-content-standards-request.json
index 7ceb71481..a94d37140 100644
--- a/schemas/cache/content-standards/create-content-standards-request.json
+++ b/schemas/cache/content-standards/create-content-standards-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/create-content-standards-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for creating a new content standards configuration",
@@ -36,7 +35,7 @@
                 "type": "object"
               },
               {
-                "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+                "$ref": "artifact.json",
                 "description": "Full artifact with pre-extracted content (text, images, video, audio)"
               }
             ]
@@ -72,7 +71,7 @@
                 "type": "object"
               },
               {
-                "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+                "$ref": "artifact.json",
                 "description": "Full artifact with pre-extracted content (text, images, video, audio)"
               }
             ]
@@ -83,10 +82,10 @@
       "type": "object"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. Prevents duplicate content standards creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -111,7 +110,7 @@
         "channels_any": {
           "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+            "$ref": "../enums/channels.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/content-standards/create-content-standards-response.json b/schemas/cache/content-standards/create-content-standards-response.json
index 68fd4363a..3a099c2ec 100644
--- a/schemas/cache/content-standards/create-content-standards-response.json
+++ b/schemas/cache/content-standards/create-content-standards-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/create-content-standards-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for creating a content standards configuration",
   "oneOf": [
@@ -7,10 +6,10 @@
       "description": "Success response - returns the created standards identifier",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "standards_id": {
           "description": "Unique identifier for the created standards configuration",
@@ -30,16 +29,16 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/content-standards/get-content-standards-request.json b/schemas/cache/content-standards/get-content-standards-request.json
index df3ab1c2c..4ee7f59e8 100644
--- a/schemas/cache/content-standards/get-content-standards-request.json
+++ b/schemas/cache/content-standards/get-content-standards-request.json
@@ -1,13 +1,12 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/get-content-standards-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request parameters for retrieving content safety policies",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "standards_id": {
       "description": "Identifier for the standards configuration to retrieve",
diff --git a/schemas/cache/content-standards/get-content-standards-response.json b/schemas/cache/content-standards/get-content-standards-response.json
index aad62bab2..31e949035 100644
--- a/schemas/cache/content-standards/get-content-standards-response.json
+++ b/schemas/cache/content-standards/get-content-standards-response.json
@@ -1,18 +1,17 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/get-content-standards-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload with content safety policies",
   "oneOf": [
     {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/content-standards/content-standards.json"
+          "$ref": "content-standards.json"
         }
       ],
       "description": "Success response - returns the content standards configuration",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         }
       },
       "type": "object"
@@ -21,16 +20,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/content-standards/get-media-buy-artifacts-request.json b/schemas/cache/content-standards/get-media-buy-artifacts-request.json
index ab5cec7e5..346e410ad 100644
--- a/schemas/cache/content-standards/get-media-buy-artifacts-request.json
+++ b/schemas/cache/content-standards/get-media-buy-artifacts-request.json
@@ -1,17 +1,16 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/get-media-buy-artifacts-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request parameters for retrieving content artifacts from a media buy for validation",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Filter artifacts to a specific account. When omitted, returns artifacts across all accessible accounts."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "failures_only": {
       "default": false,
diff --git a/schemas/cache/content-standards/get-media-buy-artifacts-response.json b/schemas/cache/content-standards/get-media-buy-artifacts-response.json
index 185d7998a..d619add57 100644
--- a/schemas/cache/content-standards/get-media-buy-artifacts-response.json
+++ b/schemas/cache/content-standards/get-media-buy-artifacts-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/get-media-buy-artifacts-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response containing content artifacts from a media buy for validation",
   "oneOf": [
@@ -11,7 +10,7 @@
           "items": {
             "properties": {
               "artifact": {
-                "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+                "$ref": "artifact.json",
                 "description": "Full artifact with content assets"
               },
               "brand_context": {
@@ -90,17 +89,17 @@
           "type": "object"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "media_buy_id": {
           "description": "Media buy these artifacts belong to",
           "type": "string"
         },
         "pagination": {
-          "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+          "$ref": "../core/pagination-response.json"
         }
       },
       "required": [
@@ -113,16 +112,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/content-standards/list-content-standards-request.json b/schemas/cache/content-standards/list-content-standards-request.json
index b38c91adb..cbdf56207 100644
--- a/schemas/cache/content-standards/list-content-standards-request.json
+++ b/schemas/cache/content-standards/list-content-standards-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/list-content-standards-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for listing content standards configurations",
@@ -7,13 +6,13 @@
     "channels": {
       "description": "Filter by channel",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "countries": {
       "description": "Filter by ISO 3166-1 alpha-2 country codes",
@@ -24,7 +23,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "languages": {
       "description": "Filter by BCP 47 language tags",
@@ -35,7 +34,7 @@
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     }
   },
   "title": "List Content Standards Request",
diff --git a/schemas/cache/content-standards/list-content-standards-response.json b/schemas/cache/content-standards/list-content-standards-response.json
index 26624133d..5423cb7a7 100644
--- a/schemas/cache/content-standards/list-content-standards-response.json
+++ b/schemas/cache/content-standards/list-content-standards-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/list-content-standards-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload with list of content standards configurations",
   "oneOf": [
@@ -7,18 +6,18 @@
       "description": "Success response - returns array of content standards",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "pagination": {
-          "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+          "$ref": "../core/pagination-response.json"
         },
         "standards": {
           "description": "Array of content standards configurations matching the filter criteria",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/content-standards/content-standards.json"
+            "$ref": "content-standards.json"
           },
           "type": "array"
         }
@@ -32,16 +31,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/content-standards/update-content-standards-request.json b/schemas/cache/content-standards/update-content-standards-request.json
index 20aa567a0..eb21f9d8d 100644
--- a/schemas/cache/content-standards/update-content-standards-request.json
+++ b/schemas/cache/content-standards/update-content-standards-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/update-content-standards-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for updating an existing content standards configuration. Creates a new version.",
@@ -36,7 +35,7 @@
                 "type": "object"
               },
               {
-                "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+                "$ref": "artifact.json",
                 "description": "Full artifact with pre-extracted content (text, images, video, audio)"
               }
             ]
@@ -72,7 +71,7 @@
                 "type": "object"
               },
               {
-                "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+                "$ref": "artifact.json",
                 "description": "Full artifact with pre-extracted content (text, images, video, audio)"
               }
             ]
@@ -83,10 +82,10 @@
       "type": "object"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -111,7 +110,7 @@
         "channels_any": {
           "description": "Advertising channels. Standards apply to ANY of the listed channels (OR logic).",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+            "$ref": "../enums/channels.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/content-standards/update-content-standards-response.json b/schemas/cache/content-standards/update-content-standards-response.json
index 476d21d1a..56aa8f3f2 100644
--- a/schemas/cache/content-standards/update-content-standards-response.json
+++ b/schemas/cache/content-standards/update-content-standards-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/update-content-standards-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from updating a content standards configuration",
   "oneOf": [
@@ -7,10 +6,10 @@
       "additionalProperties": true,
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "standards_id": {
           "description": "ID of the updated standards configuration",
@@ -37,18 +36,18 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Errors that occurred during the update",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "success": {
           "const": false,
diff --git a/schemas/cache/content-standards/validate-content-delivery-request.json b/schemas/cache/content-standards/validate-content-delivery-request.json
index 0e807e8a2..94d4ee150 100644
--- a/schemas/cache/content-standards/validate-content-delivery-request.json
+++ b/schemas/cache/content-standards/validate-content-delivery-request.json
@@ -1,13 +1,12 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/validate-content-delivery-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request parameters for batch validating delivery records against content safety policies",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "feature_ids": {
       "description": "Specific features to evaluate (defaults to all)",
@@ -27,7 +26,7 @@
       "items": {
         "properties": {
           "artifact": {
-            "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+            "$ref": "artifact.json",
             "description": "Artifact where ad was delivered"
           },
           "brand_context": {
diff --git a/schemas/cache/content-standards/validate-content-delivery-response.json b/schemas/cache/content-standards/validate-content-delivery-response.json
index 419a2bdf9..3c322463f 100644
--- a/schemas/cache/content-standards/validate-content-delivery-response.json
+++ b/schemas/cache/content-standards/validate-content-delivery-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/content-standards/validate-content-delivery-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload with per-record verdicts and optional feature breakdown",
   "oneOf": [
@@ -7,10 +6,10 @@
       "description": "Success response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "results": {
           "description": "Per-record evaluation results",
@@ -101,16 +100,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/core/account-ref.json b/schemas/cache/core/account-ref.json
index 258283f4d..c80aa84ea 100644
--- a/schemas/cache/core/account-ref.json
+++ b/schemas/cache/core/account-ref.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/account-ref.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Reference to an account by seller-assigned ID or natural key. Use account_id for explicit accounts (require_operator_auth: true, discovered via list_accounts). Use the natural key (brand + operator) for implicit accounts (require_operator_auth: false, declared via sync_accounts). For sandbox: explicit accounts use account_id (pre-existing test account), implicit accounts use the natural key with sandbox: true.",
   "examples": [
@@ -44,7 +43,7 @@
       "additionalProperties": false,
       "properties": {
         "brand": {
-          "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+          "$ref": "brand-ref.json",
           "description": "Brand reference identifying the advertiser"
         },
         "operator": {
diff --git a/schemas/cache/core/account.json b/schemas/cache/core/account.json
index 4a05cbdbe..877b5ba07 100644
--- a/schemas/cache/core/account.json
+++ b/schemas/cache/core/account.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/account.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A billing account representing the relationship between a buyer and seller. The account determines rate cards, payment terms, and billing entity.",
@@ -152,7 +151,7 @@
       "type": "string"
     },
     "billing_entity": {
-      "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+      "$ref": "business-entity.json",
       "description": "Business entity details for the party responsible for payment. Contains the legal name, tax IDs, address, and bank details needed for formal B2B invoicing. Corresponds to whoever billing points to (operator, agent, or advertiser). When this account appears in a response, bank details MUST be omitted (write-only)."
     },
     "billing_proxy": {
@@ -160,7 +159,7 @@
       "type": "string"
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "brand-ref.json",
       "description": "Brand reference identifying the advertiser"
     },
     "credit_limit": {
@@ -182,7 +181,7 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "governance_agents": {
       "description": "Governance agent endpoints registered on this account. Authentication credentials are write-only and not included in responses \u2014 use sync_governance to set or update credentials.",
@@ -268,7 +267,7 @@
       "type": "object"
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/account-status.json",
+      "$ref": "../enums/account-status.json",
       "description": "Account lifecycle status. See the Accounts Protocol overview for the operations matrix showing which tasks are permitted in each state."
     }
   },
diff --git a/schemas/cache/core/activation-key.json b/schemas/cache/core/activation-key.json
index f34fa8637..6ad5331b5 100644
--- a/schemas/cache/core/activation-key.json
+++ b/schemas/cache/core/activation-key.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/activation-key.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Universal identifier for using a signal on a destination platform. Can be either a segment ID or a key-value pair depending on the platform's targeting mechanism.",
   "oneOf": [
diff --git a/schemas/cache/core/ad-inventory-config.json b/schemas/cache/core/ad-inventory-config.json
index 67cd9c0f1..60bc1bdd6 100644
--- a/schemas/cache/core/ad-inventory-config.json
+++ b/schemas/cache/core/ad-inventory-config.json
@@ -1,39 +1,38 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/ad-inventory-config.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Ad Inventory Configuration",
   "description": "Break-based ad inventory configuration for an installment. Describes the ad breaks available within the content. For non-break ad formats (host reads, integrations, sponsorships), use product placements instead.",
+  "type": "object",
   "properties": {
     "expected_breaks": {
-      "description": "Number of planned ad breaks in the installment",
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of planned ad breaks in the installment"
+    },
+    "total_ad_seconds": {
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Total seconds of ad time across all breaks"
     },
     "max_ad_duration_seconds": {
-      "description": "Maximum duration in seconds for a single ad within a break. Buyers need this to know whether their creative fits.",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Maximum duration in seconds for a single ad within a break. Buyers need this to know whether their creative fits."
+    },
+    "unplanned_breaks": {
+      "type": "boolean",
+      "description": "Whether ad breaks are dynamic and driven by live conditions (sports timeouts, election coverage). When false, all breaks are pre-defined."
     },
     "supported_formats": {
+      "type": "array",
       "description": "Ad format types supported in breaks (e.g., 'video', 'audio', 'display')",
       "items": {
         "type": "string"
-      },
-      "type": "array"
-    },
-    "total_ad_seconds": {
-      "description": "Total seconds of ad time across all breaks",
-      "minimum": 0,
-      "type": "integer"
-    },
-    "unplanned_breaks": {
-      "description": "Whether ad breaks are dynamic and driven by live conditions (sports timeouts, election coverage). When false, all breaks are pre-defined.",
-      "type": "boolean"
+      }
     }
   },
   "required": [
     "expected_breaks"
   ],
-  "title": "Ad Inventory Configuration",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/agent-signing-key.json b/schemas/cache/core/agent-signing-key.json
index a73d5d21b..f2f1a9798 100644
--- a/schemas/cache/core/agent-signing-key.json
+++ b/schemas/cache/core/agent-signing-key.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/agent-signing-key.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Publisher-attested public key material for an authorized agent. Buyers use these keys to verify signed agent responses against the trust anchor published in adagents.json rather than trusting key discovery from the agent domain alone.",
diff --git a/schemas/cache/core/assets/audio-asset.json b/schemas/cache/core/assets/audio-asset.json
index d49a0db4a..24eeda8ab 100644
--- a/schemas/cache/core/assets/audio-asset.json
+++ b/schemas/cache/core/assets/audio-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/audio-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Audio asset with URL and technical specifications",
@@ -51,7 +50,7 @@
       "type": "number"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "sampling_rate_hz": {
diff --git a/schemas/cache/core/assets/brief-asset.json b/schemas/cache/core/assets/brief-asset.json
index c3bb3810a..9d4caa4a2 100644
--- a/schemas/cache/core/assets/brief-asset.json
+++ b/schemas/cache/core/assets/brief-asset.json
@@ -1,9 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/brief-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "allOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-brief.json"
+      "$ref": "../../core/creative-brief.json"
     }
   ],
   "description": "Campaign-level creative context as an asset. Carries the creative brief through the manifest so it travels with the creative through regeneration, resizing, and auditing.",
diff --git a/schemas/cache/core/assets/catalog-asset.json b/schemas/cache/core/assets/catalog-asset.json
index 9f123cb0c..8f44df83e 100644
--- a/schemas/cache/core/assets/catalog-asset.json
+++ b/schemas/cache/core/assets/catalog-asset.json
@@ -1,9 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/catalog-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "allOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+      "$ref": "../../core/catalog.json"
     }
   ],
   "description": "A typed data feed as a creative asset. Carries catalog context (products, stores, jobs, etc.) within the manifest's assets map.",
diff --git a/schemas/cache/core/assets/css-asset.json b/schemas/cache/core/assets/css-asset.json
index cec5b6564..094a58e58 100644
--- a/schemas/cache/core/assets/css-asset.json
+++ b/schemas/cache/core/assets/css-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/css-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "CSS stylesheet asset",
@@ -13,7 +12,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
diff --git a/schemas/cache/core/assets/daast-asset.json b/schemas/cache/core/assets/daast-asset.json
index 1d9db71a0..2e2f860c9 100644
--- a/schemas/cache/core/assets/daast-asset.json
+++ b/schemas/cache/core/assets/daast-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/daast-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "DAAST (Digital Audio Ad Serving Template) tag for third-party audio ad serving",
   "oneOf": [
@@ -11,7 +10,7 @@
           "type": "boolean"
         },
         "daast_version": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/daast-version.json",
+          "$ref": "../../enums/daast-version.json",
           "description": "DAAST specification version"
         },
         "delivery_type": {
@@ -25,13 +24,13 @@
           "type": "integer"
         },
         "provenance": {
-          "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+          "$ref": "../../core/provenance.json",
           "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         },
         "tracking_events": {
           "description": "Tracking events supported by this DAAST tag",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/daast-tracking-event.json"
+            "$ref": "../../enums/daast-tracking-event.json"
           },
           "type": "array"
         },
@@ -65,7 +64,7 @@
           "type": "string"
         },
         "daast_version": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/daast-version.json",
+          "$ref": "../../enums/daast-version.json",
           "description": "DAAST specification version"
         },
         "delivery_type": {
@@ -79,13 +78,13 @@
           "type": "integer"
         },
         "provenance": {
-          "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+          "$ref": "../../core/provenance.json",
           "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         },
         "tracking_events": {
           "description": "Tracking events supported by this DAAST tag",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/daast-tracking-event.json"
+            "$ref": "../../enums/daast-tracking-event.json"
           },
           "type": "array"
         },
diff --git a/schemas/cache/core/assets/html-asset.json b/schemas/cache/core/assets/html-asset.json
index 3e2ddf224..fd5a718ef 100644
--- a/schemas/cache/core/assets/html-asset.json
+++ b/schemas/cache/core/assets/html-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/html-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "HTML content asset",
@@ -32,7 +31,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "version": {
diff --git a/schemas/cache/core/assets/image-asset.json b/schemas/cache/core/assets/image-asset.json
index fe92fac29..ee5dcb0a9 100644
--- a/schemas/cache/core/assets/image-asset.json
+++ b/schemas/cache/core/assets/image-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/image-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Image asset with URL and dimensions",
@@ -19,7 +18,7 @@
       "type": "integer"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "url": {
diff --git a/schemas/cache/core/assets/javascript-asset.json b/schemas/cache/core/assets/javascript-asset.json
index 950d06437..0267b7ac7 100644
--- a/schemas/cache/core/assets/javascript-asset.json
+++ b/schemas/cache/core/assets/javascript-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/javascript-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "JavaScript code asset",
@@ -32,11 +31,11 @@
       "type": "string"
     },
     "module_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/javascript-module-type.json",
+      "$ref": "../../enums/javascript-module-type.json",
       "description": "JavaScript module type"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
diff --git a/schemas/cache/core/assets/markdown-asset.json b/schemas/cache/core/assets/markdown-asset.json
index e6df6ee53..a9ae34a02 100644
--- a/schemas/cache/core/assets/markdown-asset.json
+++ b/schemas/cache/core/assets/markdown-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/markdown-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Markdown-formatted text content following CommonMark specification",
@@ -18,7 +17,7 @@
       "type": "string"
     },
     "markdown_flavor": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/markdown-flavor.json",
+      "$ref": "../../enums/markdown-flavor.json",
       "default": "commonmark",
       "description": "Markdown flavor used. CommonMark for strict compatibility, GFM for tables/task lists/strikethrough."
     }
diff --git a/schemas/cache/core/assets/text-asset.json b/schemas/cache/core/assets/text-asset.json
index 6c3cae3cb..2d12e0621 100644
--- a/schemas/cache/core/assets/text-asset.json
+++ b/schemas/cache/core/assets/text-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/text-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Text content asset",
@@ -13,7 +12,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     }
   },
diff --git a/schemas/cache/core/assets/url-asset.json b/schemas/cache/core/assets/url-asset.json
index 494e919b5..733ff2b85 100644
--- a/schemas/cache/core/assets/url-asset.json
+++ b/schemas/cache/core/assets/url-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/url-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "URL reference asset",
@@ -9,7 +8,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "url": {
@@ -18,7 +17,7 @@
       "type": "string"
     },
     "url_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/url-asset-type.json",
+      "$ref": "../../enums/url-asset-type.json",
       "description": "Type of URL asset: 'clickthrough' for user click destination (landing page), 'tracker_pixel' for impression/event tracking via HTTP request (fires GET, expects pixel/204 response), 'tracker_script' for measurement SDKs that must load as <script> tag (OMID verification, native event trackers using method:2)"
     }
   },
diff --git a/schemas/cache/core/assets/vast-asset.json b/schemas/cache/core/assets/vast-asset.json
index 61f9de521..566e4ca49 100644
--- a/schemas/cache/core/assets/vast-asset.json
+++ b/schemas/cache/core/assets/vast-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/vast-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "VAST (Video Ad Serving Template) tag for third-party video ad serving",
   "oneOf": [
@@ -29,13 +28,13 @@
           "type": "integer"
         },
         "provenance": {
-          "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+          "$ref": "../../core/provenance.json",
           "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         },
         "tracking_events": {
           "description": "Tracking events supported by this VAST tag",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/vast-tracking-event.json"
+            "$ref": "../../enums/vast-tracking-event.json"
           },
           "type": "array"
         },
@@ -45,7 +44,7 @@
           "type": "string"
         },
         "vast_version": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/vast-version.json",
+          "$ref": "../../enums/vast-version.json",
           "description": "VAST specification version"
         },
         "vpaid_enabled": {
@@ -89,18 +88,18 @@
           "type": "integer"
         },
         "provenance": {
-          "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+          "$ref": "../../core/provenance.json",
           "description": "Provenance metadata for this asset, overrides manifest-level provenance"
         },
         "tracking_events": {
           "description": "Tracking events supported by this VAST tag",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/vast-tracking-event.json"
+            "$ref": "../../enums/vast-tracking-event.json"
           },
           "type": "array"
         },
         "vast_version": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/vast-version.json",
+          "$ref": "../../enums/vast-version.json",
           "description": "VAST specification version"
         },
         "vpaid_enabled": {
diff --git a/schemas/cache/core/assets/video-asset.json b/schemas/cache/core/assets/video-asset.json
index 076bfd2f8..394e84aae 100644
--- a/schemas/cache/core/assets/video-asset.json
+++ b/schemas/cache/core/assets/video-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/video-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Video asset with URL and technical specifications including audio track properties",
@@ -143,7 +142,7 @@
       "type": "string"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "scan_type": {
diff --git a/schemas/cache/core/assets/webhook-asset.json b/schemas/cache/core/assets/webhook-asset.json
index 53f5b2ea9..58e923a5b 100644
--- a/schemas/cache/core/assets/webhook-asset.json
+++ b/schemas/cache/core/assets/webhook-asset.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/assets/webhook-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Webhook for server-side dynamic content rendering (DCO)",
   "properties": {
     "method": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/http-method.json",
+      "$ref": "../../enums/http-method.json",
       "default": "POST",
       "description": "HTTP method"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "../../core/provenance.json",
       "description": "Provenance metadata for this asset, overrides manifest-level provenance"
     },
     "required_macros": {
@@ -18,7 +17,7 @@
       "items": {
         "oneOf": [
           {
-            "$ref": "/schemas/3.0.0-rc.3/enums/universal-macro.json"
+            "$ref": "../../enums/universal-macro.json"
           },
           {
             "description": "Custom or publisher-specific macro name",
@@ -29,7 +28,7 @@
       "type": "array"
     },
     "response_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/webhook-response-type.json",
+      "$ref": "../../enums/webhook-response-type.json",
       "description": "Expected content type of webhook response"
     },
     "security": {
@@ -44,7 +43,7 @@
           "type": "string"
         },
         "method": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/webhook-security-method.json",
+          "$ref": "../../enums/webhook-security-method.json",
           "description": "Authentication method"
         }
       },
@@ -58,7 +57,7 @@
       "items": {
         "oneOf": [
           {
-            "$ref": "/schemas/3.0.0-rc.3/enums/universal-macro.json"
+            "$ref": "../../enums/universal-macro.json"
           },
           {
             "description": "Custom or publisher-specific macro name",
diff --git a/schemas/cache/core/async-response-data.json b/schemas/cache/core/async-response-data.json
index c68d243a8..ab3cb708f 100644
--- a/schemas/cache/core/async-response-data.json
+++ b/schemas/cache/core/async-response-data.json
@@ -1,124 +1,123 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/async-response-data.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "anyOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/get-products-response.json",
+      "$ref": "../media-buy/get-products-response.json",
       "description": "Response for completed or failed get_products",
       "title": "GetProductsResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-working.json",
+      "$ref": "../media-buy/get-products-async-response-working.json",
       "description": "Progress data for working get_products",
       "title": "GetProductsAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-input-required.json",
+      "$ref": "../media-buy/get-products-async-response-input-required.json",
       "description": "Input requirements for get_products needing clarification",
       "title": "GetProductsAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-submitted.json",
+      "$ref": "../media-buy/get-products-async-response-submitted.json",
       "description": "Acknowledgment for submitted get_products (custom curation)",
       "title": "GetProductsAsyncSubmitted"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-response.json",
+      "$ref": "../media-buy/create-media-buy-response.json",
       "description": "Response for completed or failed create_media_buy",
       "title": "CreateMediaBuyResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-working.json",
+      "$ref": "../media-buy/create-media-buy-async-response-working.json",
       "description": "Progress data for working create_media_buy",
       "title": "CreateMediaBuyAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-input-required.json",
+      "$ref": "../media-buy/create-media-buy-async-response-input-required.json",
       "description": "Input requirements for create_media_buy needing user input",
       "title": "CreateMediaBuyAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-submitted.json",
+      "$ref": "../media-buy/create-media-buy-async-response-submitted.json",
       "description": "Acknowledgment for submitted create_media_buy",
       "title": "CreateMediaBuyAsyncSubmitted"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-response.json",
+      "$ref": "../media-buy/update-media-buy-response.json",
       "description": "Response for completed or failed update_media_buy",
       "title": "UpdateMediaBuyResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-working.json",
+      "$ref": "../media-buy/update-media-buy-async-response-working.json",
       "description": "Progress data for working update_media_buy",
       "title": "UpdateMediaBuyAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-input-required.json",
+      "$ref": "../media-buy/update-media-buy-async-response-input-required.json",
       "description": "Input requirements for update_media_buy needing user input",
       "title": "UpdateMediaBuyAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-submitted.json",
+      "$ref": "../media-buy/update-media-buy-async-response-submitted.json",
       "description": "Acknowledgment for submitted update_media_buy",
       "title": "UpdateMediaBuyAsyncSubmitted"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/build-creative-response.json",
+      "$ref": "../media-buy/build-creative-response.json",
       "description": "Response for completed or failed build_creative",
       "title": "BuildCreativeResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-working.json",
+      "$ref": "../media-buy/build-creative-async-response-working.json",
       "description": "Progress data for working build_creative",
       "title": "BuildCreativeAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-input-required.json",
+      "$ref": "../media-buy/build-creative-async-response-input-required.json",
       "description": "Input requirements for build_creative needing user input",
       "title": "BuildCreativeAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-submitted.json",
+      "$ref": "../media-buy/build-creative-async-response-submitted.json",
       "description": "Acknowledgment for submitted build_creative",
       "title": "BuildCreativeAsyncSubmitted"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/creative/sync-creatives-response.json",
+      "$ref": "../creative/sync-creatives-response.json",
       "description": "Response for completed or failed sync_creatives",
       "title": "SyncCreativesResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-working.json",
+      "$ref": "../creative/sync-creatives-async-response-working.json",
       "description": "Progress data for working sync_creatives",
       "title": "SyncCreativesAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-input-required.json",
+      "$ref": "../creative/sync-creatives-async-response-input-required.json",
       "description": "Input requirements for sync_creatives needing user input",
       "title": "SyncCreativesAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-submitted.json",
+      "$ref": "../creative/sync-creatives-async-response-submitted.json",
       "description": "Acknowledgment for submitted sync_creatives",
       "title": "SyncCreativesAsyncSubmitted"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-response.json",
+      "$ref": "../media-buy/sync-catalogs-response.json",
       "description": "Response for completed or failed sync_catalogs",
       "title": "SyncCatalogsResponse"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-working.json",
+      "$ref": "../media-buy/sync-catalogs-async-response-working.json",
       "description": "Progress data for working sync_catalogs",
       "title": "SyncCatalogsAsyncWorking"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-input-required.json",
+      "$ref": "../media-buy/sync-catalogs-async-response-input-required.json",
       "description": "Input requirements for sync_catalogs needing buyer input",
       "title": "SyncCatalogsAsyncInputRequired"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-submitted.json",
+      "$ref": "../media-buy/sync-catalogs-async-response-submitted.json",
       "description": "Acknowledgment for submitted sync_catalogs",
       "title": "SyncCatalogsAsyncSubmitted"
     }
diff --git a/schemas/cache/core/attribution-window.json b/schemas/cache/core/attribution-window.json
index 7b49c0683..6dd1e3be2 100644
--- a/schemas/cache/core/attribution-window.json
+++ b/schemas/cache/core/attribution-window.json
@@ -1,17 +1,16 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/attribution-window.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Describes the attribution methodology and lookback windows used for conversion measurement. Enables cross-platform comparison by making attribution methodology transparent.",
   "properties": {
     "model": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/attribution-model.json",
+      "$ref": "../enums/attribution-model.json",
       "description": "Attribution model used to assign credit when multiple touchpoints exist"
     },
     "post_click": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "duration.json"
         }
       ],
       "description": "Post-click attribution window. Conversions occurring within this duration after a click are attributed to the ad."
@@ -19,7 +18,7 @@
     "post_view": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "duration.json"
         }
       ],
       "description": "Post-view attribution window. Conversions occurring within this duration after an ad impression (without click) are attributed to the ad."
diff --git a/schemas/cache/core/audience-member.json b/schemas/cache/core/audience-member.json
index 96a75c233..bb7d33e69 100644
--- a/schemas/cache/core/audience-member.json
+++ b/schemas/cache/core/audience-member.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/audience-member.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -22,7 +21,7 @@
   "description": "A CRM audience member identified by a buyer-assigned external_id and at least one matchable identifier. All identifiers must be normalized before hashing: emails to lowercase+trim, phone numbers to E.164 format (e.g. +12065551234). Providing multiple identifiers for the same person improves match rates. Composite identifiers (e.g. hashed first name + last name + zip for Google Customer Match) are not yet standardized \u2014 use the ext field for platform-specific extensions.",
   "properties": {
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "external_id": {
       "description": "Buyer-assigned stable identifier for this audience member (e.g. CRM record ID, loyalty ID). Used for deduplication, removal, and cross-referencing with buyer systems. Adapters for CDPs that don't natively assign IDs can derive one (e.g. hash of the member's identifiers).",
@@ -44,7 +43,7 @@
         "additionalProperties": true,
         "properties": {
           "type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/uid-type.json",
+            "$ref": "../enums/uid-type.json",
             "description": "Universal ID type"
           },
           "value": {
diff --git a/schemas/cache/core/audience-selector.json b/schemas/cache/core/audience-selector.json
index 41ec3c4de..05fa5cb8c 100644
--- a/schemas/cache/core/audience-selector.json
+++ b/schemas/cache/core/audience-selector.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/audience-selector.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Selects an audience by signal reference or natural language description. Uses 'type' as the primary discriminator (signal vs description). Signal selectors additionally use 'value_type' to determine the targeting expression format (matching signal-targeting.json variants).",
   "oneOf": [
@@ -8,7 +7,7 @@
       "description": "Signal-based selector for binary signals \u2014 user either matches or doesn't. The governance agent can resolve catalog signals to their full definition for structural validation.",
       "properties": {
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "type": {
@@ -39,7 +38,7 @@
       "description": "Signal-based selector for categorical signals \u2014 target users with specific values.",
       "properties": {
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "type": {
@@ -82,7 +81,7 @@
           "type": "number"
         },
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "type": {
diff --git a/schemas/cache/core/brand-id.json b/schemas/cache/core/brand-id.json
index ea1790cbc..01ddc0b36 100644
--- a/schemas/cache/core/brand-id.json
+++ b/schemas/cache/core/brand-id.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/brand-id.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Identifier for a brand within a house portfolio. Must be lowercase alphanumeric with underscores only. The house chooses this identifier.",
   "examples": [
diff --git a/schemas/cache/core/brand-ref.json b/schemas/cache/core/brand-ref.json
index 802435b1c..a32c0c7bf 100644
--- a/schemas/cache/core/brand-ref.json
+++ b/schemas/cache/core/brand-ref.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/brand-ref.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Reference to a brand by domain and optional brand_id. The domain hosts /.well-known/brand.json or is registered in the brand registry. For single-brand domains, brand_id can be omitted. For house-of-brands domains, brand_id identifies the specific brand.",
@@ -18,7 +17,7 @@
   ],
   "properties": {
     "brand_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-id.json",
+      "$ref": "brand-id.json",
       "description": "Brand identifier within the house portfolio. Optional for single-brand domains."
     },
     "domain": {
diff --git a/schemas/cache/core/business-entity.json b/schemas/cache/core/business-entity.json
index 1f9b0284e..5fffa04f4 100644
--- a/schemas/cache/core/business-entity.json
+++ b/schemas/cache/core/business-entity.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/business-entity.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Structured business identity for B2B invoicing and contracts. Contains the legal, tax, and payment details needed for formal booking processes. Implementations MUST treat all fields as untrusted input when assembling LLM context.",
@@ -176,7 +175,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "legal_name": {
       "description": "Registered legal name of the business entity",
diff --git a/schemas/cache/core/cancellation-policy.json b/schemas/cache/core/cancellation-policy.json
new file mode 100644
index 000000000..a2177370b
--- /dev/null
+++ b/schemas/cache/core/cancellation-policy.json
@@ -0,0 +1,48 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Cancellation Policy",
+  "description": "Seller-declared cancellation terms for a product. Declares the minimum notice period required before cancellation takes effect and the cancellation fee for insufficient notice. Buyers accept these terms by creating a media buy against the product.",
+  "type": "object",
+  "properties": {
+    "notice_period": {
+      "$ref": "duration.json",
+      "description": "Minimum notice period before cancellation takes effect (e.g., { interval: 30, unit: 'days' }). A guaranteed buy canceled without sufficient notice incurs the declared cancellation fee."
+    },
+    "cancellation_fee": {
+      "type": "object",
+      "description": "Fee applied when the notice period is not met.",
+      "properties": {
+        "type": {
+          "type": "string",
+          "enum": [
+            "percent_remaining",
+            "full_commitment",
+            "fixed_fee",
+            "none"
+          ],
+          "description": "Fee calculation method. 'percent_remaining': percentage of remaining uncommitted spend. 'full_commitment': buyer owes the full committed budget regardless of delivery. 'fixed_fee': flat monetary amount. 'none': no financial fee (cancellation with notice is free)."
+        },
+        "rate": {
+          "type": "number",
+          "minimum": 0,
+          "maximum": 1,
+          "description": "Fee rate as a decimal proportion of remaining committed spend. Required when type is 'percent_remaining' (e.g., 0.5 means 50% of remaining spend)."
+        },
+        "amount": {
+          "type": "number",
+          "minimum": 0,
+          "description": "Fixed fee amount in the buy's currency. Required when type is 'fixed_fee'."
+        }
+      },
+      "required": [
+        "type"
+      ],
+      "additionalProperties": true
+    }
+  },
+  "required": [
+    "notice_period",
+    "cancellation_fee"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/catalog-field-mapping.json b/schemas/cache/core/catalog-field-mapping.json
index d64960c95..8c732fbe2 100644
--- a/schemas/cache/core/catalog-field-mapping.json
+++ b/schemas/cache/core/catalog-field-mapping.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/catalog-field-mapping.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "allOf": [
@@ -106,7 +105,7 @@
       "description": "Fallback value to use when feed_field is absent, null, or empty. Applied after any transform would have been applied. Allows optional feed fields to have a guaranteed baseline value."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "feed_field": {
       "description": "Field name in the external feed record. Omit when injecting a static literal value (use the value property instead).",
diff --git a/schemas/cache/core/catalog.json b/schemas/cache/core/catalog.json
index 24243873a..5b4ca34b1 100644
--- a/schemas/cache/core/catalog.json
+++ b/schemas/cache/core/catalog.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/catalog.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A typed data feed. Catalogs carry the items, locations, stock levels, or pricing that publishers use to render ads. They can be synced to a platform via sync_catalogs (managed lifecycle with approval), provided inline, or fetched from an external URL. The catalog type determines the item schema and can be structural (offering, product, inventory, store, promotion) or vertical-specific (hotel, flight, job, vehicle, real_estate, education, destination, app). Selectors (ids, tags, category, query) filter items regardless of sourcing method.",
@@ -134,13 +133,13 @@
       "type": "string"
     },
     "content_id_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/content-id-type.json",
+      "$ref": "../enums/content-id-type.json",
       "description": "Identifier type that the event's content_ids field should be matched against for items in this catalog. For example, 'gtin' means content_ids values are Global Trade Item Numbers, 'sku' means retailer SKUs. Omit when using a custom identifier scheme not listed in the enum."
     },
     "conversion_events": {
       "description": "Event types that represent conversions for items in this catalog. Declares what events the platform should attribute to catalog items \u2014 e.g., a job catalog converts via submit_application, a product catalog via purchase. The event's content_ids field carries the item IDs that connect back to catalog items. Use content_id_type to declare what identifier type content_ids values represent.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+        "$ref": "../enums/event-type.json"
       },
       "minItems": 1,
       "type": "array",
@@ -149,13 +148,13 @@
     "feed_field_mappings": {
       "description": "Declarative normalization rules for external feeds. Maps non-standard feed field names, date formats, price encodings, and image URLs to the AdCP catalog item schema. Applied during sync_catalogs ingestion. Supports field renames, named transforms (date, divide, boolean, split), static literal injection, and assignment of image URLs to typed asset pools.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog-field-mapping.json"
+        "$ref": "catalog-field-mapping.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "feed_format": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/feed-format.json",
+      "$ref": "../enums/feed-format.json",
       "description": "Format of the external feed at url. Required when url points to a non-AdCP feed (e.g., Google Merchant Center XML, Meta Product Catalog). Omit for offering-type catalogs where the feed is native AdCP JSON."
     },
     "gtins": {
@@ -200,11 +199,11 @@
       "type": "array"
     },
     "type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/catalog-type.json",
+      "$ref": "../enums/catalog-type.json",
       "description": "Catalog type. Structural types: 'offering' (AdCP Offering objects), 'product' (ecommerce entries), 'inventory' (stock per location), 'store' (physical locations), 'promotion' (deals and pricing). Vertical types: 'hotel', 'flight', 'job', 'vehicle', 'real_estate', 'education', 'destination', 'app' \u2014 each with an industry-specific item schema."
     },
     "update_frequency": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/update-frequency.json",
+      "$ref": "../enums/update-frequency.json",
       "description": "How often the platform should re-fetch the feed from url. Only applicable when url is provided. Platforms may use this as a hint for polling schedules."
     },
     "url": {
diff --git a/schemas/cache/core/catchment.json b/schemas/cache/core/catchment.json
index 87b4303b8..80cef8125 100644
--- a/schemas/cache/core/catchment.json
+++ b/schemas/cache/core/catchment.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/catchment.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A catchment area definition for a store or location. Defines the geographic area from which a store draws customers. Three methods are supported: isochrone inputs (travel time + transport mode, platform resolves the shape), simple radius (distance from location), or pre-computed GeoJSON geometry (buyer provides the exact boundary). Provide exactly one method per catchment.",
@@ -140,7 +139,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "geometry": {
       "additionalProperties": false,
@@ -174,7 +173,7 @@
       "description": "Simple radius from the store location. The platform draws a circle of this distance around the store's coordinates.",
       "properties": {
         "unit": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/distance-unit.json",
+          "$ref": "../enums/distance-unit.json",
           "description": "Distance unit."
         },
         "value": {
@@ -190,7 +189,7 @@
       "type": "object"
     },
     "transport_mode": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/transport-mode.json",
+      "$ref": "../enums/transport-mode.json",
       "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
     },
     "travel_time": {
diff --git a/schemas/cache/core/collection-distribution.json b/schemas/cache/core/collection-distribution.json
index f4642f481..bbccb45be 100644
--- a/schemas/cache/core/collection-distribution.json
+++ b/schemas/cache/core/collection-distribution.json
@@ -1,41 +1,40 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/collection-distribution.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Collection Distribution",
   "description": "A collection's presence on a specific publisher platform, identified by platform-specific identifiers. Enables cross-seller matching when the same collection is sold by different agents.",
+  "type": "object",
   "properties": {
+    "publisher_domain": {
+      "type": "string",
+      "description": "Domain of the publisher platform where the collection is distributed (e.g., 'youtube.com', 'spotify.com')"
+    },
     "identifiers": {
+      "type": "array",
       "description": "Platform-specific identifiers for the collection on this publisher",
       "items": {
-        "additionalProperties": false,
+        "type": "object",
         "properties": {
           "type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/distribution-identifier-type.json",
+            "$ref": "../enums/distribution-identifier-type.json",
             "description": "Type of distribution identifier"
           },
           "value": {
-            "description": "The identifier value",
-            "type": "string"
+            "type": "string",
+            "description": "The identifier value"
           }
         },
         "required": [
           "type",
           "value"
         ],
-        "type": "object"
+        "additionalProperties": false
       },
-      "minItems": 1,
-      "type": "array"
-    },
-    "publisher_domain": {
-      "description": "Domain of the publisher platform where the collection is distributed (e.g., 'youtube.com', 'spotify.com')",
-      "type": "string"
+      "minItems": 1
     }
   },
   "required": [
     "publisher_domain",
     "identifiers"
   ],
-  "title": "Collection Distribution",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/collection-selector.json b/schemas/cache/core/collection-selector.json
index 13ee01795..304212711 100644
--- a/schemas/cache/core/collection-selector.json
+++ b/schemas/cache/core/collection-selector.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/collection-selector.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "References collections declared in an adagents.json. Buyers resolve full collection objects by fetching the adagents.json at the given domain and matching collection_ids against its collections array.",
diff --git a/schemas/cache/core/collection.json b/schemas/cache/core/collection.json
index 9be41c550..5383e71d8 100644
--- a/schemas/cache/core/collection.json
+++ b/schemas/cache/core/collection.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/collection.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A recurring inventory container \u2014 a named program, publication, event series, or rotation that produces bookable installments on a defined cadence. The kind field indicates how to interpret this collection: 'series' for TV/podcast programs, 'publication' for print/newsletter titles, 'event_series' for live events, 'rotation' for DOOH scheduling. Declared in the publisher's adagents.json and referenced by products via collection selectors.",
   "properties": {
     "cadence": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/collection-cadence.json",
+      "$ref": "../enums/collection-cadence.json",
       "description": "How frequently the collection releases new installments"
     },
     "collection_id": {
@@ -13,11 +12,11 @@
       "type": "string"
     },
     "content_rating": {
-      "$ref": "/schemas/3.0.0-rc.3/core/content-rating.json",
+      "$ref": "content-rating.json",
       "description": "Baseline content rating for the collection. Individual installments may override this."
     },
     "deadline_policy": {
-      "$ref": "/schemas/3.0.0-rc.3/core/deadline-policy.json",
+      "$ref": "deadline-policy.json",
       "description": "Default deadline rules for installments of this collection. Agents compute absolute deadlines from each installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy."
     },
     "description": {
@@ -27,12 +26,12 @@
     "distribution": {
       "description": "Where this collection is distributed. Each entry maps the collection to a publisher platform with platform-specific identifiers. Collections SHOULD include at least one platform-independent identifier (imdb_id, gracenote_id, eidr_id) when available.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/collection-distribution.json"
+        "$ref": "collection-distribution.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "genre": {
       "description": "Genre tags. When genre_taxonomy is present, values are taxonomy IDs (e.g., IAB Content Taxonomy 3.0 codes). Otherwise free-form.",
@@ -60,7 +59,7 @@
       "type": "string"
     },
     "limited_series": {
-      "$ref": "/schemas/3.0.0-rc.3/core/limited-series.json",
+      "$ref": "limited-series.json",
       "description": "When present, this collection is a limited series \u2014 a bounded run with a defined arc, installment count, and end date."
     },
     "name": {
@@ -68,7 +67,7 @@
       "type": "string"
     },
     "production_quality": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/production-quality.json",
+      "$ref": "../enums/production-quality.json",
       "description": "Production quality tier. Seller-declared. Maps to OpenRTB content.prodq (professional=1, prosumer=2, ugc=3)."
     },
     "related_collections": {
@@ -81,7 +80,7 @@
             "type": "string"
           },
           "relationship": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/collection-relationship.json",
+            "$ref": "../enums/collection-relationship.json",
             "description": "How the collections are related"
           }
         },
@@ -98,17 +97,17 @@
       "type": "string"
     },
     "special": {
-      "$ref": "/schemas/3.0.0-rc.3/core/special.json",
+      "$ref": "special.json",
       "description": "When present, this collection is a special \u2014 content anchored to a real-world event or occasion. Individual installments may override with their own event context."
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/collection-status.json",
+      "$ref": "../enums/collection-status.json",
       "description": "Lifecycle status of the collection"
     },
     "talent": {
       "description": "Hosts, recurring cast, creators associated with the collection. Each talent entry may include a brand_url linking to their brand.json identity.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/talent.json"
+        "$ref": "talent.json"
       },
       "type": "array"
     }
diff --git a/schemas/cache/core/content-rating.json b/schemas/cache/core/content-rating.json
index 40cad9975..bc67a9d81 100644
--- a/schemas/cache/core/content-rating.json
+++ b/schemas/cache/core/content-rating.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/content-rating.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Content advisory rating using a specified rating system",
@@ -9,7 +8,7 @@
       "type": "string"
     },
     "system": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/content-rating-system.json",
+      "$ref": "../enums/content-rating-system.json",
       "description": "Rating system used"
     }
   },
diff --git a/schemas/cache/core/context.json b/schemas/cache/core/context.json
index c4e7ac03e..fcbd795dd 100644
--- a/schemas/cache/core/context.json
+++ b/schemas/cache/core/context.json
@@ -1,8 +1,7 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/context.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
   "title": "Context Object",
-  "type": "object"
+  "description": "Opaque correlation data that is echoed unchanged in responses. Used for internal tracking, UI session IDs, trace IDs, and other caller-specific identifiers that don't affect protocol behavior. Context data is never parsed by AdCP agents - it's simply preserved and returned.",
+  "type": "object",
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/creative-asset.json b/schemas/cache/core/creative-asset.json
index 88d5a0848..0daca8edd 100644
--- a/schemas/cache/core/creative-asset.json
+++ b/schemas/cache/core/creative-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party snippets",
@@ -11,46 +10,46 @@
         "^[a-z0-9_]+$": {
           "anyOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/image-asset.json"
+              "$ref": "assets/image-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/video-asset.json"
+              "$ref": "assets/video-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/audio-asset.json"
+              "$ref": "assets/audio-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/vast-asset.json"
+              "$ref": "assets/vast-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/text-asset.json"
+              "$ref": "assets/text-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/url-asset.json"
+              "$ref": "assets/url-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/html-asset.json"
+              "$ref": "assets/html-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/javascript-asset.json"
+              "$ref": "assets/javascript-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/webhook-asset.json"
+              "$ref": "assets/webhook-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/css-asset.json"
+              "$ref": "assets/css-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/daast-asset.json"
+              "$ref": "assets/daast-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/markdown-asset.json"
+              "$ref": "assets/markdown-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/brief-asset.json"
+              "$ref": "assets/brief-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/catalog-asset.json"
+              "$ref": "assets/catalog-asset.json"
             }
           ]
         }
@@ -62,7 +61,7 @@
       "type": "string"
     },
     "format_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+      "$ref": "format-id.json",
       "description": "Format identifier specifying which format this creative conforms to. Can be: (1) concrete format_id referencing a format with fixed dimensions, (2) template format_id referencing a template format, or (3) parameterized format_id with dimensions/duration parameters for template formats."
     },
     "inputs": {
@@ -106,11 +105,11 @@
       "type": "array"
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "provenance.json",
       "description": "Provenance metadata for this creative. Serves as the default provenance for all manifests and assets within this creative. A manifest or asset with its own provenance replaces this object entirely (no field-level merging)."
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/creative-status.json",
+      "$ref": "../enums/creative-status.json",
       "description": "For generative creatives: set to 'approved' to finalize, 'rejected' to request regeneration with updated assets/message. Omit for non-generative creatives (system will set based on processing state)."
     },
     "tags": {
diff --git a/schemas/cache/core/creative-assignment.json b/schemas/cache/core/creative-assignment.json
index 927198d36..fbc8f4c9d 100644
--- a/schemas/cache/core/creative-assignment.json
+++ b/schemas/cache/core/creative-assignment.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-assignment.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Assignment of a creative asset to a package with optional placement targeting. Used in create_media_buy and update_media_buy requests. Note: sync_creatives does not support placement_ids - use create/update_media_buy for placement-level targeting.",
diff --git a/schemas/cache/core/creative-brief.json b/schemas/cache/core/creative-brief.json
index a559614fd..6eb1942a5 100644
--- a/schemas/cache/core/creative-brief.json
+++ b/schemas/cache/core/creative-brief.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-brief.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Campaign-level creative context for AI-powered creative generation. Provides the layer between brand identity (stable across campaigns) and individual creative execution (per-request). A brand has one identity (defined in brand.json) but different creative briefs for each campaign or flight.",
@@ -44,11 +43,11 @@
                 "type": "integer"
               },
               "persistence": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json",
+                "$ref": "../enums/disclosure-persistence.json",
                 "description": "How long the disclosure must persist during content playback or display. When omitted, the creative agent should use the most restrictive persistence mode supported by the target format."
               },
               "position": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json",
+                "$ref": "../enums/disclosure-position.json",
                 "description": "Where the disclosure should appear within the creative. prominent: clearly visible in the main creative area; footer: at the bottom of visual creatives; audio: spoken in audio/video creatives; subtitle: displayed in the subtitle or closed-caption track; overlay: superimposed on video content; end_card: displayed on video end card; pre_roll: spoken or displayed before main content; companion: in companion ad unit alongside primary creative"
               },
               "regulation": {
@@ -115,7 +114,7 @@
     "reference_assets": {
       "description": "Visual and strategic reference materials such as mood boards, product shots, example creatives, and strategy documents",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/reference-asset.json"
+        "$ref": "reference-asset.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/core/creative-filters.json b/schemas/cache/core/creative-filters.json
index 467bce257..a46b71021 100644
--- a/schemas/cache/core/creative-filters.json
+++ b/schemas/cache/core/creative-filters.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-filters.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Filter criteria for querying creatives from a creative library. By default, archived creatives are excluded from results. To include archived creatives, explicitly filter by status='archived' or include 'archived' in the statuses array.",
@@ -7,7 +6,7 @@
     "accounts": {
       "description": "Filter creatives by owning accounts. Useful for agencies managing multiple client accounts.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json"
+        "$ref": "account-ref.json"
       },
       "minItems": 1,
       "type": "array"
@@ -50,7 +49,7 @@
     "format_ids": {
       "description": "Filter by structured format IDs. Returns creatives that match any of these formats.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -78,7 +77,7 @@
     "statuses": {
       "description": "Filter by creative approval statuses",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/creative-status.json"
+        "$ref": "../enums/creative-status.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/creative-item.json b/schemas/cache/core/creative-item.json
index c9e347b44..b0deec051 100644
--- a/schemas/cache/core/creative-item.json
+++ b/schemas/cache/core/creative-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Item within a multi-asset creative format. Used for carousel products, native ad components, and other formats composed of multiple distinct elements.",
   "oneOf": [
diff --git a/schemas/cache/core/creative-manifest.json b/schemas/cache/core/creative-manifest.json
index 6d939ba89..c0b802ff7 100644
--- a/schemas/cache/core/creative-manifest.json
+++ b/schemas/cache/core/creative-manifest.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Complete specification of a creative: format_id + assets. Everything the creative needs \u2014 images, text, briefs, catalogs \u2014 lives in the assets map, declared by the format. Each asset is typed according to its asset_type from the format specification.",
@@ -11,46 +10,46 @@
         "^[a-z0-9_]+$": {
           "anyOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/image-asset.json"
+              "$ref": "assets/image-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/video-asset.json"
+              "$ref": "assets/video-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/audio-asset.json"
+              "$ref": "assets/audio-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/vast-asset.json"
+              "$ref": "assets/vast-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/text-asset.json"
+              "$ref": "assets/text-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/url-asset.json"
+              "$ref": "assets/url-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/html-asset.json"
+              "$ref": "assets/html-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/javascript-asset.json"
+              "$ref": "assets/javascript-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/webhook-asset.json"
+              "$ref": "assets/webhook-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/css-asset.json"
+              "$ref": "assets/css-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/daast-asset.json"
+              "$ref": "assets/daast-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/markdown-asset.json"
+              "$ref": "assets/markdown-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/brief-asset.json"
+              "$ref": "assets/brief-asset.json"
             },
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/assets/catalog-asset.json"
+              "$ref": "assets/catalog-asset.json"
             }
           ]
         }
@@ -58,20 +57,20 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "format_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+      "$ref": "format-id.json",
       "description": "Format identifier this manifest is for. Can be a template format (id only) or a deterministic format (id + dimensions/duration). For dimension-specific creatives, include width/height/unit in the format_id to create a unique identifier (e.g., {id: 'display_static', width: 300, height: 250, unit: 'px'})."
     },
     "provenance": {
-      "$ref": "/schemas/3.0.0-rc.3/core/provenance.json",
+      "$ref": "provenance.json",
       "description": "Provenance metadata for this creative manifest. Serves as the default provenance for all assets in this manifest. An asset with its own provenance replaces this object entirely (no field-level merging)."
     },
     "rights": {
       "description": "Rights constraints attached to this creative. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/rights-constraint.json"
+        "$ref": "rights-constraint.json"
       },
       "type": "array"
     }
diff --git a/schemas/cache/core/creative-policy.json b/schemas/cache/core/creative-policy.json
index 776a06d41..128ff3efd 100644
--- a/schemas/cache/core/creative-policy.json
+++ b/schemas/cache/core/creative-policy.json
@@ -1,15 +1,14 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-policy.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Creative requirements and restrictions for a product",
   "properties": {
     "co_branding": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/co-branding-requirement.json",
+      "$ref": "../enums/co-branding-requirement.json",
       "description": "Co-branding requirement"
     },
     "landing_page": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/landing-page-requirement.json",
+      "$ref": "../enums/landing-page-requirement.json",
       "description": "Landing page requirements"
     },
     "provenance_required": {
diff --git a/schemas/cache/core/creative-variable.json b/schemas/cache/core/creative-variable.json
index 2828b9402..08cf9d907 100644
--- a/schemas/cache/core/creative-variable.json
+++ b/schemas/cache/core/creative-variable.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-variable.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A dynamic content variable (DCO slot) on a creative. Variables represent content that can change at serve time \u2014 headlines, images, product data, etc.",
diff --git a/schemas/cache/core/creative-variant.json b/schemas/cache/core/creative-variant.json
index 2d815dd7d..a2a18c3e9 100644
--- a/schemas/cache/core/creative-variant.json
+++ b/schemas/cache/core/creative-variant.json
@@ -1,9 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/creative-variant.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "allOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+      "$ref": "delivery-metrics.json"
     },
     {
       "properties": {
@@ -20,7 +19,7 @@
                   "type": "string"
                 },
                 "property_id": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/identifier.json",
+                  "$ref": "identifier.json",
                   "description": "Property where the artifact appears"
                 }
               },
@@ -35,13 +34,13 @@
               "type": "string"
             },
             "ext": {
-              "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+              "$ref": "ext.json"
             }
           },
           "type": "object"
         },
         "manifest": {
-          "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+          "$ref": "creative-manifest.json",
           "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets. Contains format_id and the resolved assets (specific headline, image, video, etc. the platform selected or generated). For Tier 2, shows which asset combination was picked. For Tier 3, contains the generated assets which may differ entirely from the input brand identity. Pass to preview_creative to re-render."
         },
         "variant_id": {
diff --git a/schemas/cache/core/data-provider-signal-selector.json b/schemas/cache/core/data-provider-signal-selector.json
index 850ad7d79..6733e5a9c 100644
--- a/schemas/cache/core/data-provider-signal-selector.json
+++ b/schemas/cache/core/data-provider-signal-selector.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/data-provider-signal-selector.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Selects signals from a data provider's adagents.json catalog. Used for product definitions and agent authorization. Supports three selection patterns: all signals, specific IDs, or by tags.",
   "discriminator": {
diff --git a/schemas/cache/core/date-range.json b/schemas/cache/core/date-range.json
index 1b29d0482..2b9893f44 100644
--- a/schemas/cache/core/date-range.json
+++ b/schemas/cache/core/date-range.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/date-range.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A date range with inclusive start and end dates (ISO 8601 calendar dates). Used for billing periods, flight dates, and other calendar-day boundaries.",
diff --git a/schemas/cache/core/datetime-range.json b/schemas/cache/core/datetime-range.json
index 59087c3ac..1d4d89f5f 100644
--- a/schemas/cache/core/datetime-range.json
+++ b/schemas/cache/core/datetime-range.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/datetime-range.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A datetime range with inclusive start and end timestamps (ISO 8601 with timezone). Used for measurement windows, reporting periods, and other sub-day precision boundaries.",
diff --git a/schemas/cache/core/daypart-target.json b/schemas/cache/core/daypart-target.json
index 0d6b0b736..872eba66f 100644
--- a/schemas/cache/core/daypart-target.json
+++ b/schemas/cache/core/daypart-target.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/daypart-target.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A time window for daypart targeting. Specifies days of week and an hour range. start_hour is inclusive, end_hour is exclusive (e.g., 6-10 = 6:00am to 10:00am). Follows the Google Ads AdScheduleInfo / DV360 DayPartTargeting pattern.",
@@ -7,7 +6,7 @@
     "days": {
       "description": "Days of week this window applies to. Use multiple days for compact targeting (e.g., monday-friday in one object).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/day-of-week.json"
+        "$ref": "../enums/day-of-week.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/deadline-policy.json b/schemas/cache/core/deadline-policy.json
index 3ebbde5d8..3ce9a431e 100644
--- a/schemas/cache/core/deadline-policy.json
+++ b/schemas/cache/core/deadline-policy.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/deadline-policy.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Default deadline rules for installments that do not declare their own deadlines. Agents compute absolute deadlines from the installment's scheduled_at and these lead times. Installments with explicit deadlines override this policy. booking_lead_days SHOULD be >= cancellation_lead_days (bookings close before cancellation window closes).",
diff --git a/schemas/cache/core/delivery-forecast.json b/schemas/cache/core/delivery-forecast.json
index 3a5220615..d39a7a5a9 100644
--- a/schemas/cache/core/delivery-forecast.json
+++ b/schemas/cache/core/delivery-forecast.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/delivery-forecast.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Forecasted delivery metrics for a proposal or product allocation. Publishers attach points to help buyers evaluate expected campaign performance before purchase.",
@@ -19,14 +18,14 @@
       "type": "string"
     },
     "demographic_system": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/demographic-system.json",
+      "$ref": "../enums/demographic-system.json",
       "description": "Measurement system for the demographic field. Ensures buyer and seller agree on demographic notation."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "forecast_range_unit": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/forecast-range-unit.json",
+      "$ref": "../enums/forecast-range-unit.json",
       "description": "How to interpret the points array. 'spend' (default when omitted): points at ascending budget levels. 'availability': total available inventory, budget omitted. 'reach_freq': points at ascending reach/frequency targets. 'weekly'/'daily': metrics are per-period values. 'clicks'/'conversions': points at ascending outcome targets."
     },
     "generated_at": {
@@ -35,19 +34,19 @@
       "type": "string"
     },
     "method": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/forecast-method.json",
+      "$ref": "../enums/forecast-method.json",
       "description": "Method used to produce this forecast"
     },
     "points": {
       "description": "Forecasted delivery data points. For spend curves (default), points at ascending budget levels show how metrics scale with spend. For availability forecasts, points represent total available inventory independent of budget. See forecast_range_unit for interpretation.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/forecast-point.json"
+        "$ref": "forecast-point.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "reach_unit": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json",
+      "$ref": "../enums/reach-unit.json",
       "description": "Unit of measurement for reach and audience_size metrics in this forecast. Required for cross-channel forecast comparison."
     },
     "valid_until": {
diff --git a/schemas/cache/core/delivery-metrics.json b/schemas/cache/core/delivery-metrics.json
index 8fc3f909d..1d589ce1d 100644
--- a/schemas/cache/core/delivery-metrics.json
+++ b/schemas/cache/core/delivery-metrics.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/delivery-metrics.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "dependencies": {
@@ -15,7 +14,7 @@
         "additionalProperties": true,
         "properties": {
           "action_source": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/action-source.json",
+            "$ref": "../enums/action-source.json",
             "description": "Where the conversion occurred"
           },
           "count": {
@@ -56,7 +55,7 @@
             "type": "string"
           },
           "event_type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json",
+            "$ref": "../enums/event-type.json",
             "description": "The event type"
           },
           "value": {
@@ -269,7 +268,7 @@
     "reach_unit": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json"
+          "$ref": "../enums/reach-unit.json"
         }
       ],
       "description": "Unit of measurement for the reach field. Aligns with the reach_unit declared on optimization goals and delivery forecasts. Required when reach is present to enable cross-platform comparison."
diff --git a/schemas/cache/core/deployment.json b/schemas/cache/core/deployment.json
index 7b45f6568..b240bb96b 100644
--- a/schemas/cache/core/deployment.json
+++ b/schemas/cache/core/deployment.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/deployment.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A signal deployment to a specific deployment target with activation status and key",
   "oneOf": [
@@ -11,7 +10,7 @@
           "type": "string"
         },
         "activation_key": {
-          "$ref": "/schemas/3.0.0-rc.3/core/activation-key.json",
+          "$ref": "activation-key.json",
           "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment."
         },
         "deployed_at": {
@@ -53,7 +52,7 @@
           "type": "string"
         },
         "activation_key": {
-          "$ref": "/schemas/3.0.0-rc.3/core/activation-key.json",
+          "$ref": "activation-key.json",
           "description": "The key to use for targeting. Only present if is_live=true AND requester has access to this deployment."
         },
         "agent_url": {
diff --git a/schemas/cache/core/destination-item.json b/schemas/cache/core/destination-item.json
index bb3bfe38b..5ef65a9c8 100644
--- a/schemas/cache/core/destination-item.json
+++ b/schemas/cache/core/destination-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/destination-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A travel destination within a destination-type catalog. Carries the location, imagery, and pricing data that platforms use for destination ads and travel remarketing. Maps to Meta destination catalogs, Google travel ads, and similar formats.",
@@ -61,7 +60,7 @@
     "assets": {
       "description": "Typed creative asset pools for this destination. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -97,7 +96,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "image_url": {
       "description": "Destination hero image URL.",
@@ -132,7 +131,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Starting price for a trip to this destination."
     },
     "rating": {
diff --git a/schemas/cache/core/destination.json b/schemas/cache/core/destination.json
index df2d5d645..323cd69a1 100644
--- a/schemas/cache/core/destination.json
+++ b/schemas/cache/core/destination.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/destination.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A deployment target where signals can be activated (DSP, sales agent, etc.)",
   "oneOf": [
diff --git a/schemas/cache/core/diagnostic-issue.json b/schemas/cache/core/diagnostic-issue.json
index 67af859f7..a66a4e708 100644
--- a/schemas/cache/core/diagnostic-issue.json
+++ b/schemas/cache/core/diagnostic-issue.json
@@ -1,27 +1,26 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/diagnostic-issue.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Diagnostic Issue",
   "description": "An actionable issue detected during a health or readiness assessment. Used by event source health and measurement readiness to surface problems and recommendations.",
+  "type": "object",
   "properties": {
-    "message": {
-      "description": "Human/agent-readable description of the issue and how to resolve it.",
-      "type": "string"
-    },
     "severity": {
-      "description": "'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement.",
+      "type": "string",
       "enum": [
         "error",
         "warning",
         "info"
       ],
-      "type": "string"
+      "description": "'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
+    },
+    "message": {
+      "type": "string",
+      "description": "Human/agent-readable description of the issue and how to resolve it."
     }
   },
   "required": [
     "severity",
     "message"
   ],
-  "title": "Diagnostic Issue",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/duration.json b/schemas/cache/core/duration.json
index d406dd04e..785ceae57 100644
--- a/schemas/cache/core/duration.json
+++ b/schemas/cache/core/duration.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/duration.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A time duration expressed as an interval and unit. Used for frequency cap windows, attribution windows, reach optimization windows, time budgets, and other time-based settings. When unit is 'campaign', interval must be 1 \u2014 the window spans the full campaign flight.",
diff --git a/schemas/cache/core/education-item.json b/schemas/cache/core/education-item.json
index 8d1a4f7ca..ea8d3cd81 100644
--- a/schemas/cache/core/education-item.json
+++ b/schemas/cache/core/education-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/education-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "An educational program or course within an education-type catalog. Carries the program details that platforms use for education ads and student recruitment campaigns. Maps to Google DynamicEducationAsset, schema.org Course, and similar formats.",
@@ -59,7 +58,7 @@
     "assets": {
       "description": "Typed creative asset pools for this program. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (campus/program hero), 'images_vertical' (9:16 for Stories), 'logo' (institution logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -86,7 +85,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "image_url": {
       "description": "Program or institution image URL.",
@@ -124,7 +123,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Tuition or course fee."
     },
     "program_id": {
diff --git a/schemas/cache/core/error.json b/schemas/cache/core/error.json
index bb9592c52..08184ca07 100644
--- a/schemas/cache/core/error.json
+++ b/schemas/cache/core/error.json
@@ -1,52 +1,51 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/error.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Error",
   "description": "Standard error structure for task-specific errors and warnings",
+  "type": "object",
   "properties": {
     "code": {
-      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification.",
-      "maxLength": 64,
+      "type": "string",
       "minLength": 1,
-      "type": "string"
+      "maxLength": 64,
+      "description": "Error code for programmatic handling. Standard codes are defined in error-code.json and enable autonomous agent recovery. Sellers MAY use codes not in the standard vocabulary for platform-specific errors; agents MUST handle unknown codes gracefully by falling back to the recovery classification."
     },
-    "details": {
-      "additionalProperties": true,
-      "description": "Additional task-specific error details",
-      "type": "object"
+    "message": {
+      "type": "string",
+      "description": "Human-readable error message"
     },
     "field": {
-      "description": "Field path associated with the error (e.g., 'packages[0].targeting')",
-      "type": "string"
+      "type": "string",
+      "description": "Field path associated with the error (e.g., 'packages[0].targeting')"
     },
-    "message": {
-      "description": "Human-readable error message",
-      "type": "string"
+    "suggestion": {
+      "type": "string",
+      "description": "Suggested fix for the error"
+    },
+    "retry_after": {
+      "type": "number",
+      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
+      "minimum": 1,
+      "maximum": 3600
+    },
+    "details": {
+      "type": "object",
+      "description": "Additional task-specific error details",
+      "additionalProperties": true
     },
     "recovery": {
-      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).",
+      "type": "string",
       "enum": [
         "transient",
         "correctable",
         "terminal"
       ],
-      "type": "string"
-    },
-    "retry_after": {
-      "description": "Seconds to wait before retrying the operation. Sellers MUST return values between 1 and 3600. Clients MUST clamp values outside this range.",
-      "maximum": 3600,
-      "minimum": 1,
-      "type": "number"
-    },
-    "suggestion": {
-      "description": "Suggested fix for the error",
-      "type": "string"
+      "description": "Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found)."
     }
   },
   "required": [
     "code",
     "message"
   ],
-  "title": "Error",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/event-custom-data.json b/schemas/cache/core/event-custom-data.json
index f901fce9f..06c7086e5 100644
--- a/schemas/cache/core/event-custom-data.json
+++ b/schemas/cache/core/event-custom-data.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/event-custom-data.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Event-specific data for attribution and reporting",
@@ -60,7 +59,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "num_items": {
       "description": "Number of items in the event",
diff --git a/schemas/cache/core/event-source-health.json b/schemas/cache/core/event-source-health.json
index 55966f690..fd392b420 100644
--- a/schemas/cache/core/event-source-health.json
+++ b/schemas/cache/core/event-source-health.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/event-source-health.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Health assessment for a configured event source. Sellers evaluate the quality, completeness, and volume of events received from this source. Sellers with native quality scores (Snap EQS, Meta EMQ) relay them in detail; sellers without native scores derive status from operational metrics (volume, error rates, tag activity).",
@@ -42,7 +41,7 @@
     "issues": {
       "description": "Actionable issues detected with this event source. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/diagnostic-issue.json"
+        "$ref": "diagnostic-issue.json"
       },
       "type": "array"
     },
@@ -58,7 +57,7 @@
       "type": "number"
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/assessment-status.json",
+      "$ref": "../enums/assessment-status.json",
       "description": "Overall health status. Use this for cross-seller decisions \u2014 do not rely on detail.score for comparability."
     }
   },
diff --git a/schemas/cache/core/event.json b/schemas/cache/core/event.json
index cfa5c9560..83125ee08 100644
--- a/schemas/cache/core/event.json
+++ b/schemas/cache/core/event.json
@@ -1,15 +1,14 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/event.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A marketing event (conversion, engagement, or custom) for attribution and optimization",
   "properties": {
     "action_source": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/action-source.json",
+      "$ref": "../enums/action-source.json",
       "description": "Where the event originated"
     },
     "custom_data": {
-      "$ref": "/schemas/3.0.0-rc.3/core/event-custom-data.json",
+      "$ref": "event-custom-data.json",
       "description": "Event-specific data (value, currency, items, etc.)"
     },
     "custom_event_name": {
@@ -33,14 +32,14 @@
       "type": "string"
     },
     "event_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json",
+      "$ref": "../enums/event-type.json",
       "description": "Standard event type"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "user_match": {
-      "$ref": "/schemas/3.0.0-rc.3/core/user-match.json",
+      "$ref": "user-match.json",
       "description": "User identifiers for attribution matching"
     }
   },
diff --git a/schemas/cache/core/ext.json b/schemas/cache/core/ext.json
index ea361f58d..ba6a9744b 100644
--- a/schemas/cache/core/ext.json
+++ b/schemas/cache/core/ext.json
@@ -1,8 +1,7 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/ext.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
-  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
   "title": "Extension Object",
-  "type": "object"
+  "description": "Extension object for platform-specific, vendor-namespaced parameters. Extensions are always optional and must be namespaced under a vendor/platform key (e.g., ext.gam, ext.roku). Used for custom capabilities, partner-specific configuration, and features being proposed for standardization.",
+  "type": "object",
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/flight-item.json b/schemas/cache/core/flight-item.json
index d1432a847..f3c7f8c15 100644
--- a/schemas/cache/core/flight-item.json
+++ b/schemas/cache/core/flight-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/flight-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A flight route within a flight-type catalog. Carries origin/destination, airline, pricing, and schedule data that platforms use for flight ads and dynamic travel remarketing. Maps to Google DynamicFlightsAsset, Meta flight catalogs, and similar formats.",
@@ -67,7 +66,7 @@
     "assets": {
       "description": "Typed creative asset pools for this flight. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (destination hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -101,7 +100,7 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "flight_id": {
       "description": "Unique identifier for this flight route or offer.",
@@ -132,7 +131,7 @@
       "type": "object"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Ticket price or starting fare."
     },
     "tags": {
diff --git a/schemas/cache/core/forecast-point.json b/schemas/cache/core/forecast-point.json
index db6808d6e..3a1a92eec 100644
--- a/schemas/cache/core/forecast-point.json
+++ b/schemas/cache/core/forecast-point.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/forecast-point.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A forecast data point. When budget is present, the point pairs a spend level with expected delivery \u2014 multiple points at ascending budgets form a curve. When budget is omitted, the point represents total available inventory for the requested targeting and dates, independent of spend.",
@@ -11,48 +10,48 @@
     },
     "metrics": {
       "additionalProperties": {
-        "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+        "$ref": "forecast-range.json"
       },
       "description": "Forecasted metric values. Keys are forecastable-metric enum values for delivery/engagement or event-type enum values for outcomes. Values are ForecastRange objects (low/mid/high). Use { \"mid\": value } for point estimates. When budget is present, these are the expected metrics at that spend level. When budget is omitted, these represent total available inventory \u2014 use spend to express the estimated cost. Additional keys beyond the documented properties are allowed for event-type values (purchase, lead, app_install, etc.).",
       "properties": {
         "audience_size": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "clicks": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "completed_views": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "engagements": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "follows": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "frequency": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "grps": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "impressions": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "profile_visits": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "reach": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "saves": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "spend": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         },
         "views": {
-          "$ref": "/schemas/3.0.0-rc.3/core/forecast-range.json"
+          "$ref": "forecast-range.json"
         }
       },
       "type": "object"
diff --git a/schemas/cache/core/forecast-range.json b/schemas/cache/core/forecast-range.json
index 3392dfb43..f6a8adb02 100644
--- a/schemas/cache/core/forecast-range.json
+++ b/schemas/cache/core/forecast-range.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/forecast-range.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A forecast value with optional low/high bounds. The mid value represents the most likely outcome. When low and high are provided, they represent conservative and optimistic estimates respectively.",
diff --git a/schemas/cache/core/format-id.json b/schemas/cache/core/format-id.json
index 76478b643..a2153f0be 100644
--- a/schemas/cache/core/format-id.json
+++ b/schemas/cache/core/format-id.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/format-id.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "dependencies": {
diff --git a/schemas/cache/core/format.json b/schemas/cache/core/format.json
index 0a45fc0d8..a9168cdea 100644
--- a/schemas/cache/core/format.json
+++ b/schemas/cache/core/format.json
@@ -13,7 +13,7 @@
         "overlays": {
           "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., carousel navigation arrows, slide indicators). Creative agents should avoid placing critical content within overlay bounds.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/overlay.json"
+            "$ref": "overlay.json"
           },
           "type": "array"
         },
@@ -48,7 +48,7 @@
         "overlays": {
           "description": "Publisher-controlled elements rendered on top of buyer content at this asset's position (e.g., video player controls, publisher logos). Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/overlay.json"
+            "$ref": "overlay.json"
           },
           "type": "array"
         },
@@ -66,7 +66,6 @@
       "type": "object"
     }
   },
-  "$id": "/schemas/3.0.0-rc.3/core/format.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Represents a creative format with its requirements",
@@ -74,7 +73,7 @@
     "accepts_parameters": {
       "description": "List of parameters this format accepts in format_id. Template formats define which parameters (dimensions, duration, etc.) can be specified when instantiating the format. Empty or omitted means this is a concrete format with fixed parameters.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/format-id-parameter.json"
+        "$ref": "../enums/format-id-parameter.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -87,7 +86,7 @@
           "type": "boolean"
         },
         "wcag_level": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/wcag-level.json",
+          "$ref": "../enums/wcag-level.json",
           "description": "WCAG conformance level that this format achieves. For format-rendered creatives, the format guarantees this level. For opaque creatives, the format requires assets that self-certify to this level."
         }
       },
@@ -115,7 +114,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/image-asset-requirements.json"
+                "$ref": "requirements/image-asset-requirements.json"
               }
             }
           },
@@ -134,7 +133,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/video-asset-requirements.json"
+                "$ref": "requirements/video-asset-requirements.json"
               }
             }
           },
@@ -153,7 +152,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/audio-asset-requirements.json"
+                "$ref": "requirements/audio-asset-requirements.json"
               }
             }
           },
@@ -172,7 +171,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/text-asset-requirements.json"
+                "$ref": "requirements/text-asset-requirements.json"
               }
             }
           },
@@ -191,7 +190,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/markdown-asset-requirements.json"
+                "$ref": "requirements/markdown-asset-requirements.json"
               }
             }
           },
@@ -210,7 +209,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/html-asset-requirements.json"
+                "$ref": "requirements/html-asset-requirements.json"
               }
             }
           },
@@ -229,7 +228,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/css-asset-requirements.json"
+                "$ref": "requirements/css-asset-requirements.json"
               }
             }
           },
@@ -248,7 +247,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/javascript-asset-requirements.json"
+                "$ref": "requirements/javascript-asset-requirements.json"
               }
             }
           },
@@ -267,7 +266,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/vast-asset-requirements.json"
+                "$ref": "requirements/vast-asset-requirements.json"
               }
             }
           },
@@ -286,7 +285,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/daast-asset-requirements.json"
+                "$ref": "requirements/daast-asset-requirements.json"
               }
             }
           },
@@ -305,7 +304,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/url-asset-requirements.json"
+                "$ref": "requirements/url-asset-requirements.json"
               }
             }
           },
@@ -324,7 +323,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/webhook-asset-requirements.json"
+                "$ref": "requirements/webhook-asset-requirements.json"
               }
             }
           },
@@ -359,7 +358,7 @@
                 "const": "individual"
               },
               "requirements": {
-                "$ref": "/schemas/3.0.0-rc.3/core/requirements/catalog-requirements.json"
+                "$ref": "requirements/catalog-requirements.json"
               }
             }
           },
@@ -386,7 +385,7 @@
                           "const": "image"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/image-asset-requirements.json"
+                          "$ref": "requirements/image-asset-requirements.json"
                         }
                       }
                     },
@@ -402,7 +401,7 @@
                           "const": "video"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/video-asset-requirements.json"
+                          "$ref": "requirements/video-asset-requirements.json"
                         }
                       }
                     },
@@ -418,7 +417,7 @@
                           "const": "audio"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/audio-asset-requirements.json"
+                          "$ref": "requirements/audio-asset-requirements.json"
                         }
                       }
                     },
@@ -434,7 +433,7 @@
                           "const": "text"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/text-asset-requirements.json"
+                          "$ref": "requirements/text-asset-requirements.json"
                         }
                       }
                     },
@@ -450,7 +449,7 @@
                           "const": "markdown"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/markdown-asset-requirements.json"
+                          "$ref": "requirements/markdown-asset-requirements.json"
                         }
                       }
                     },
@@ -466,7 +465,7 @@
                           "const": "html"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/html-asset-requirements.json"
+                          "$ref": "requirements/html-asset-requirements.json"
                         }
                       }
                     },
@@ -482,7 +481,7 @@
                           "const": "css"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/css-asset-requirements.json"
+                          "$ref": "requirements/css-asset-requirements.json"
                         }
                       }
                     },
@@ -498,7 +497,7 @@
                           "const": "javascript"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/javascript-asset-requirements.json"
+                          "$ref": "requirements/javascript-asset-requirements.json"
                         }
                       }
                     },
@@ -514,7 +513,7 @@
                           "const": "vast"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/vast-asset-requirements.json"
+                          "$ref": "requirements/vast-asset-requirements.json"
                         }
                       }
                     },
@@ -530,7 +529,7 @@
                           "const": "daast"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/daast-asset-requirements.json"
+                          "$ref": "requirements/daast-asset-requirements.json"
                         }
                       }
                     },
@@ -546,7 +545,7 @@
                           "const": "url"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/url-asset-requirements.json"
+                          "$ref": "requirements/url-asset-requirements.json"
                         }
                       }
                     },
@@ -562,7 +561,7 @@
                           "const": "webhook"
                         },
                         "requirements": {
-                          "$ref": "/schemas/3.0.0-rc.3/core/requirements/webhook-asset-requirements.json"
+                          "$ref": "requirements/webhook-asset-requirements.json"
                         }
                       }
                     }
@@ -630,14 +629,14 @@
           "persistence": {
             "description": "Persistence modes this position supports",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json"
+              "$ref": "../enums/disclosure-persistence.json"
             },
             "minItems": 1,
             "type": "array",
             "uniqueItems": true
           },
           "position": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json",
+            "$ref": "../enums/disclosure-position.json",
             "description": "The disclosure position"
           }
         },
@@ -660,7 +659,7 @@
       "description": "Optional standard visual card (300x400px) for displaying this format in user interfaces. Can be rendered via preview_creative or pre-generated.",
       "properties": {
         "format_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+          "$ref": "format-id.json",
           "description": "Creative format defining the card layout (typically format_card_standard)"
         },
         "manifest": {
@@ -680,7 +679,7 @@
       "description": "Optional detailed card with carousel and full specifications. Provides rich format documentation similar to ad spec pages.",
       "properties": {
         "format_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+          "$ref": "format-id.json",
           "description": "Creative format defining the detailed card layout (typically format_card_detailed)"
         },
         "manifest": {
@@ -696,13 +695,13 @@
       "type": "object"
     },
     "format_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+      "$ref": "format-id.json",
       "description": "Structured format identifier with agent URL and format name"
     },
     "input_format_ids": {
       "description": "Array of format IDs this format accepts as input creative manifests. When present, indicates this format can take existing creatives in these formats as input. Omit for formats that work from raw assets (images, text, etc.) rather than existing creatives.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "type": "array"
     },
@@ -713,7 +712,7 @@
     "output_format_ids": {
       "description": "Array of format IDs that this format can produce as output. When present, indicates this format can build creatives in these output formats (e.g., a multi-publisher template format might produce standard display formats across many publishers). Omit for formats that produce a single fixed output (the format itself).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "type": "array"
     },
@@ -798,7 +797,7 @@
                 "type": "object"
               },
               "unit": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/dimension-unit.json",
+                "$ref": "../enums/dimension-unit.json",
                 "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
               },
               "width": {
@@ -829,7 +828,7 @@
     "reported_metrics": {
       "description": "Metrics this format can produce in delivery reporting. Buyers receive the intersection of format reported_metrics and product available_metrics. If omitted, the format defers entirely to product-level metric declarations.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/available-metric.json"
+        "$ref": "../enums/available-metric.json"
       },
       "minItems": 1,
       "type": "array",
@@ -838,7 +837,7 @@
     "supported_disclosure_positions": {
       "description": "Disclosure positions this format can render. Buyers use this to determine whether a format can satisfy their compliance requirements before submitting a creative. When omitted, the format makes no disclosure rendering guarantees \u2014 creative agents SHOULD treat this as incompatible with briefs that require specific disclosure positions. Values correspond to positions on creative-brief.json required_disclosures.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json"
+        "$ref": "../enums/disclosure-position.json"
       },
       "minItems": 1,
       "type": "array",
@@ -849,7 +848,7 @@
       "items": {
         "oneOf": [
           {
-            "$ref": "/schemas/3.0.0-rc.3/enums/universal-macro.json"
+            "$ref": "../enums/universal-macro.json"
           },
           {
             "description": "Custom or publisher-specific macro name",
diff --git a/schemas/cache/core/frequency-cap.json b/schemas/cache/core/frequency-cap.json
index 5ab792062..db86288c9 100644
--- a/schemas/cache/core/frequency-cap.json
+++ b/schemas/cache/core/frequency-cap.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/frequency-cap.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -41,7 +40,7 @@
     "per": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json"
+          "$ref": "../enums/reach-unit.json"
         }
       ],
       "description": "Entity granularity for impression counting. Required when max_impressions is set."
@@ -49,7 +48,7 @@
     "suppress": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "duration.json"
         }
       ],
       "description": "Cooldown period between consecutive exposures to the same entity. Prevents back-to-back ad delivery (e.g. {\"interval\": 60, \"unit\": \"minutes\"} for a 1-hour cooldown). Preferred over suppress_minutes."
@@ -62,7 +61,7 @@
     "window": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "duration.json"
         }
       ],
       "description": "Time window for the max_impressions cap (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Required when max_impressions is set."
diff --git a/schemas/cache/core/generation-credential.json b/schemas/cache/core/generation-credential.json
index c42658a21..b3af89506 100644
--- a/schemas/cache/core/generation-credential.json
+++ b/schemas/cache/core/generation-credential.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/generation-credential.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A scoped credential issued by an LLM provider for generating rights-cleared content. The rights agent coordinates with the provider to issue the credential; the provider enforces usage constraints at generation time. Any creative agent can use the credential.",
@@ -15,7 +14,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "provider": {
       "description": "LLM or generation service provider identifier (e.g., 'midjourney', 'elevenlabs', 'stability')",
@@ -28,7 +27,7 @@
     "uses": {
       "description": "Which rights uses this credential covers",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+        "$ref": "../enums/right-use.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/geo-breakdown-support.json b/schemas/cache/core/geo-breakdown-support.json
index 5bef14d43..378fd5a8a 100644
--- a/schemas/cache/core/geo-breakdown-support.json
+++ b/schemas/cache/core/geo-breakdown-support.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/geo-breakdown-support.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Declares which geographic levels and classification systems are available for by_geo reporting breakdowns in product-level reporting_capabilities.",
@@ -14,7 +13,7 @@
       },
       "description": "Metro area breakdown support. Keys are metro-system enum values; true means supported.",
       "propertyNames": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json"
+        "$ref": "../enums/metro-system.json"
       },
       "type": "object"
     },
@@ -24,7 +23,7 @@
       },
       "description": "Postal area breakdown support. Keys are postal-system enum values; true means supported.",
       "propertyNames": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json"
+        "$ref": "../enums/postal-system.json"
       },
       "type": "object"
     },
diff --git a/schemas/cache/core/hotel-item.json b/schemas/cache/core/hotel-item.json
index 899484c3d..72f234092 100644
--- a/schemas/cache/core/hotel-item.json
+++ b/schemas/cache/core/hotel-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/hotel-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A hotel or lodging property within a hotel-type catalog. Carries the property data that platforms use for hotel ads, dynamic remarketing, and travel campaign creatives. Maps to Google Hotel Center feeds, Meta hotel catalogs, and similar platform-native formats.",
@@ -108,7 +107,7 @@
     "assets": {
       "description": "Typed creative asset pools for this hotel. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (16:9 hero images), 'images_vertical' (9:16 for Snap, Stories), 'images_square' (1:1), 'logo'. Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -128,7 +127,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "hotel_id": {
       "description": "Unique identifier for this property. Used to match remarketing events and inventory feeds to the correct hotel.",
@@ -171,7 +170,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Nightly rate or starting price. Use period 'night' for nightly rates."
     },
     "star_rating": {
diff --git a/schemas/cache/core/identifier.json b/schemas/cache/core/identifier.json
index 71f7da3fb..d3e2af467 100644
--- a/schemas/cache/core/identifier.json
+++ b/schemas/cache/core/identifier.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/identifier.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A property identifier with type and value. Used to identify properties across platforms (domains, app store IDs, etc.).",
   "properties": {
     "type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/identifier-types.json",
+      "$ref": "../enums/identifier-types.json",
       "description": "Type of identifier"
     },
     "value": {
diff --git a/schemas/cache/core/insertion-order.json b/schemas/cache/core/insertion-order.json
index 155d24fee..cf6db9194 100644
--- a/schemas/cache/core/insertion-order.json
+++ b/schemas/cache/core/insertion-order.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/insertion-order.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A formal insertion order attached to a committed proposal. Contains structured terms for agent validation and optional signing URLs for human approval workflows.",
diff --git a/schemas/cache/core/installment-deadlines.json b/schemas/cache/core/installment-deadlines.json
index 748a7f08f..112e55ef4 100644
--- a/schemas/cache/core/installment-deadlines.json
+++ b/schemas/cache/core/installment-deadlines.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/installment-deadlines.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Deadlines associated with a bookable installment. Applies to any channel where inventory is tied to a scheduled unit: print issues, podcast episodes, linear TV airings, influencer posts, DOOH rotations.",
@@ -18,7 +17,7 @@
     "material_deadlines": {
       "description": "Stages for creative material submission. Items MUST be in chronological order by due_at (earliest first). Typical pattern: 'draft' for raw materials the seller will process, 'final' for production-ready assets. Print example: draft artwork then press-ready PDF. Influencer example: talking points then approved script.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/material-deadline.json"
+        "$ref": "material-deadline.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/installment.json b/schemas/cache/core/installment.json
index b7f4bba5f..b49bc6030 100644
--- a/schemas/cache/core/installment.json
+++ b/schemas/cache/core/installment.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/installment.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A single bookable unit within a collection \u2014 one episode, issue, event, or rotation period. The parent collection's kind indicates how to interpret each installment: TV/podcast episodes, print issues, live event airings, newsletter editions, or DOOH rotation periods. Installments inherit collection-level fields they don't override: content_rating defaults to the collection's baseline, guest_talent is additive to the collection's recurring talent, and topics add context beyond the collection's genre.",
   "properties": {
     "ad_inventory": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ad-inventory-config.json",
+      "$ref": "ad-inventory-config.json",
       "description": "Break-based ad inventory for this installment. For non-break formats (host reads, integrations), use product placements."
     },
     "collection_id": {
@@ -13,11 +12,11 @@
       "type": "string"
     },
     "content_rating": {
-      "$ref": "/schemas/3.0.0-rc.3/core/content-rating.json",
+      "$ref": "content-rating.json",
       "description": "Installment-specific content rating. Overrides the collection's baseline content_rating when present."
     },
     "deadlines": {
-      "$ref": "/schemas/3.0.0-rc.3/core/installment-deadlines.json",
+      "$ref": "installment-deadlines.json",
       "description": "Booking, cancellation, and material submission deadlines for this installment. Present when the installment has time-sensitive inventory that requires advance commitment or material delivery."
     },
     "derivative_of": {
@@ -29,7 +28,7 @@
           "type": "string"
         },
         "type": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/derivative-type.json",
+          "$ref": "../enums/derivative-type.json",
           "description": "What kind of derivative content this is"
         }
       },
@@ -45,7 +44,7 @@
       "type": "integer"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "flexible_end": {
       "description": "Whether the end time is approximate (live events, sports)",
@@ -54,7 +53,7 @@
     "guest_talent": {
       "description": "Installment-specific guests and talent. Additive to the collection's recurring talent.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/talent.json"
+        "$ref": "talent.json"
       },
       "type": "array"
     },
@@ -80,11 +79,11 @@
       "type": "string"
     },
     "special": {
-      "$ref": "/schemas/3.0.0-rc.3/core/special.json",
+      "$ref": "special.json",
       "description": "Installment-specific event context. When present, this installment is anchored to a real-world event. Overrides the collection-level special when present."
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/installment-status.json",
+      "$ref": "../enums/installment-status.json",
       "description": "Lifecycle status of the installment"
     },
     "topics": {
diff --git a/schemas/cache/core/job-item.json b/schemas/cache/core/job-item.json
index 34dbb1463..db98a4e78 100644
--- a/schemas/cache/core/job-item.json
+++ b/schemas/cache/core/job-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/job-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A job posting within a job-type catalog. Carries the position details that platforms use for job ads and recruitment campaigns. Maps to LinkedIn Jobs XML, Google DynamicJobsAsset, schema.org JobPosting, and similar formats.",
@@ -67,7 +66,7 @@
     "assets": {
       "description": "Typed creative asset pools for this job. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (company/role hero), 'images_vertical' (9:16 for Stories), 'logo' (company logo). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -109,7 +108,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "industries": {
       "description": "Industry classifications (e.g., 'technology', 'healthcare', 'retail').",
diff --git a/schemas/cache/core/limited-series.json b/schemas/cache/core/limited-series.json
index da3b0a66a..bd8734758 100644
--- a/schemas/cache/core/limited-series.json
+++ b/schemas/cache/core/limited-series.json
@@ -1,28 +1,27 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/limited-series.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Limited Series",
   "description": "A bounded content run with a defined arc. Indicates the collection has a planned beginning, end, and installment count \u2014 distinguishing it from ongoing series.",
+  "type": "object",
   "properties": {
-    "ends": {
-      "description": "When the series ends (ISO 8601)",
-      "format": "date-time",
-      "type": "string"
+    "total_installments": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Planned number of installments in the series"
     },
     "starts": {
-      "description": "When the series begins (ISO 8601)",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the series begins (ISO 8601)"
     },
-    "total_installments": {
-      "description": "Planned number of installments in the series",
-      "minimum": 1,
-      "type": "integer"
+    "ends": {
+      "type": "string",
+      "format": "date-time",
+      "description": "When the series ends (ISO 8601)"
     }
   },
   "required": [
     "total_installments"
   ],
-  "title": "Limited Series",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/material-deadline.json b/schemas/cache/core/material-deadline.json
index 0ec066538..8e638de77 100644
--- a/schemas/cache/core/material-deadline.json
+++ b/schemas/cache/core/material-deadline.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/material-deadline.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A deadline for creative material submission. Sellers declare stages to distinguish draft materials (e.g., talking points, raw artwork) from production-ready assets (e.g., approved scripts, press-ready PDFs).",
diff --git a/schemas/cache/core/mcp-webhook-payload.json b/schemas/cache/core/mcp-webhook-payload.json
index ae425489e..49218cfc1 100644
--- a/schemas/cache/core/mcp-webhook-payload.json
+++ b/schemas/cache/core/mcp-webhook-payload.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/mcp-webhook-payload.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Standard envelope for HTTP-based push notifications (MCP). This defines the wire format sent to the URL configured in `pushNotificationConfig`. NOTE: This envelope is NOT used in A2A integration, which uses native Task/TaskStatusUpdateEvent messages with the AdCP payload nested in `status.message.parts[].data`.",
@@ -106,7 +105,7 @@
       "type": "string"
     },
     "domain": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/adcp-domain.json",
+      "$ref": "../enums/adcp-domain.json",
       "description": "AdCP domain this task belongs to. Helps classify the operation type at a high level."
     },
     "message": {
@@ -118,11 +117,11 @@
       "type": "string"
     },
     "result": {
-      "$ref": "/schemas/3.0.0-rc.3/core/async-response-data.json",
+      "$ref": "async-response-data.json",
       "description": "Task-specific payload matching the status. For completed/failed, contains the full task response. For working/input-required/submitted, contains status-specific data. This is the data layer that AdCP specs - same structure used in A2A status.message.parts[].data."
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/task-status.json",
+      "$ref": "../enums/task-status.json",
       "description": "Current task status. Webhooks are triggered for status changes after initial submission."
     },
     "task_id": {
@@ -130,7 +129,7 @@
       "type": "string"
     },
     "task_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/task-type.json",
+      "$ref": "../enums/task-type.json",
       "description": "Type of AdCP operation that triggered this webhook. Enables webhook handlers to route to appropriate processing logic."
     },
     "timestamp": {
diff --git a/schemas/cache/core/measurement-readiness.json b/schemas/cache/core/measurement-readiness.json
index c8cc789f7..fbc77eb57 100644
--- a/schemas/cache/core/measurement-readiness.json
+++ b/schemas/cache/core/measurement-readiness.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/measurement-readiness.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Per-product assessment of whether the buyer's event source setup is sufficient for the product's optimization capabilities. Sellers evaluate this in the context of the buyer's account \u2014 the same product may show different readiness for different buyers depending on their event source configuration.",
@@ -7,14 +6,14 @@
     "issues": {
       "description": "Actionable issues preventing full measurement readiness. Sellers should limit to the top 3-5 most actionable items. Buyer agents should sort by severity rather than relying on array position.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/diagnostic-issue.json"
+        "$ref": "diagnostic-issue.json"
       },
       "type": "array"
     },
     "missing_event_types": {
       "description": "Event types this product requires that the buyer has not configured. Empty or absent when all required types are covered.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+        "$ref": "../enums/event-type.json"
       },
       "type": "array"
     },
@@ -25,13 +24,13 @@
     "required_event_types": {
       "description": "Event types this product needs for effective optimization. Buyers should ensure their event sources cover these types.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+        "$ref": "../enums/event-type.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/assessment-status.json",
+      "$ref": "../enums/assessment-status.json",
       "description": "Overall measurement readiness level for this product given the buyer's event setup. 'insufficient' means the product cannot optimize effectively with the current setup."
     }
   },
diff --git a/schemas/cache/core/measurement-terms.json b/schemas/cache/core/measurement-terms.json
new file mode 100644
index 000000000..12e84ea97
--- /dev/null
+++ b/schemas/cache/core/measurement-terms.json
@@ -0,0 +1,57 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Measurement Terms",
+  "description": "Billing measurement and makegood terms for media buys. Declares who counts the billing metric and what remedies apply when thresholds are breached. Appears on products (seller defaults), package requests (buyer proposals), and confirmed packages (agreed terms). All fields are optional \u2014 presence indicates the term is declared or proposed.",
+  "type": "object",
+  "properties": {
+    "billing_measurement": {
+      "type": "object",
+      "description": "Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV).",
+      "properties": {
+        "vendor": {
+          "$ref": "brand-ref.json",
+          "description": "Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM)."
+        },
+        "max_variance_percent": {
+          "type": "number",
+          "minimum": 0,
+          "exclusiveMaximum": 100,
+          "description": "Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review)."
+        },
+        "measurement_window": {
+          "type": "string",
+          "description": "Which measurement window the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. For broadcast TV, this is typically 'c7' (live + 7 days DVR). When absent, billing is based on the seller's standard reporting without windowed maturation.",
+          "examples": [
+            "live",
+            "c3",
+            "c7"
+          ]
+        }
+      },
+      "required": [
+        "vendor"
+      ],
+      "additionalProperties": true
+    },
+    "makegood_policy": {
+      "type": "object",
+      "description": "Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.",
+      "properties": {
+        "available_remedies": {
+          "type": "array",
+          "description": "Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.",
+          "items": {
+            "$ref": "../enums/makegood-remedy.json"
+          },
+          "minItems": 1,
+          "uniqueItems": true
+        }
+      },
+      "required": [
+        "available_remedies"
+      ],
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/media-buy-features.json b/schemas/cache/core/media-buy-features.json
index 63133b51f..aa812c99e 100644
--- a/schemas/cache/core/media-buy-features.json
+++ b/schemas/cache/core/media-buy-features.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/media-buy-features.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": {
     "type": "boolean"
diff --git a/schemas/cache/core/media-buy.json b/schemas/cache/core/media-buy.json
index 6a2cb03e7..e53413b50 100644
--- a/schemas/cache/core/media-buy.json
+++ b/schemas/cache/core/media-buy.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/media-buy.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Represents a purchased advertising campaign",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account.json",
+      "$ref": "account.json",
       "description": "Account billed for this media buy"
     },
     "cancellation": {
@@ -18,7 +17,7 @@
           "type": "string"
         },
         "canceled_by": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/canceled-by.json",
+          "$ref": "../enums/canceled-by.json",
           "description": "Which party initiated the cancellation. 'buyer' when canceled via update_media_buy; 'seller' when the seller cancels (e.g., policy violation, inventory withdrawal)."
         },
         "reason": {
@@ -49,10 +48,10 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "invoice_recipient": {
-      "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+      "$ref": "business-entity.json",
       "description": "Per-buy override for who receives the invoice. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
     },
     "media_buy_id": {
@@ -62,7 +61,7 @@
     "packages": {
       "description": "Array of packages within this media buy",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/package.json"
+        "$ref": "package.json"
       },
       "type": "array"
     },
@@ -76,7 +75,7 @@
       "type": "integer"
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+      "$ref": "../enums/media-buy-status.json"
     },
     "total_budget": {
       "description": "Total budget amount",
diff --git a/schemas/cache/core/offering-asset-group.json b/schemas/cache/core/offering-asset-group.json
index ef0f91ff8..188844bda 100644
--- a/schemas/cache/core/offering-asset-group.json
+++ b/schemas/cache/core/offering-asset-group.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/offering-asset-group.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A structured group of creative assets within an offering, identified by a group ID and asset type. Enables offerings to carry per-group creative pools (headlines, images, videos) using the same vocabulary as format-level asset definitions.",
@@ -48,51 +47,51 @@
       "type": "string"
     },
     "asset_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/asset-content-type.json",
+      "$ref": "../enums/asset-content-type.json",
       "description": "The content type of all items in this group."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "items": {
       "description": "The assets in this group. Each item should match the structure for the declared asset_type. Note: JSON Schema validation accepts any valid asset structure here; enforcement that items match asset_type is the responsibility of the consuming agent.",
       "items": {
         "anyOf": [
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/text-asset.json"
+            "$ref": "assets/text-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/image-asset.json"
+            "$ref": "assets/image-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/video-asset.json"
+            "$ref": "assets/video-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/audio-asset.json"
+            "$ref": "assets/audio-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/url-asset.json"
+            "$ref": "assets/url-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/html-asset.json"
+            "$ref": "assets/html-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/markdown-asset.json"
+            "$ref": "assets/markdown-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/vast-asset.json"
+            "$ref": "assets/vast-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/daast-asset.json"
+            "$ref": "assets/daast-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/css-asset.json"
+            "$ref": "assets/css-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/javascript-asset.json"
+            "$ref": "assets/javascript-asset.json"
           },
           {
-            "$ref": "/schemas/3.0.0-rc.3/core/assets/webhook-asset.json"
+            "$ref": "assets/webhook-asset.json"
           }
         ]
       },
diff --git a/schemas/cache/core/offering.json b/schemas/cache/core/offering.json
index 43ff376d1..1f4222a42 100644
--- a/schemas/cache/core/offering.json
+++ b/schemas/cache/core/offering.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/offering.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A promotable offering from a brand. Can represent a campaign, product promotion, service, or any other thing the brand wants to make available. Offerings carry structured asset groups for creative assembly and can be promoted via traditional creatives or conversational SI experiences (via the brand's SI agent).",
@@ -115,7 +114,7 @@
     "assets": {
       "description": "Structured asset groups for this offering. Each group carries a typed pool of creative assets (headlines, images, videos, etc.) identified by a group ID that matches format-level vocabulary.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "type": "array"
     },
@@ -136,7 +135,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "geo_targets": {
       "additionalProperties": true,
@@ -157,7 +156,7 @@
             "additionalProperties": true,
             "properties": {
               "system": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json",
+                "$ref": "../enums/metro-system.json",
                 "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
               },
               "values": {
@@ -184,7 +183,7 @@
             "additionalProperties": true,
             "properties": {
               "system": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json",
+                "$ref": "../enums/postal-system.json",
                 "description": "Postal code system (e.g., 'us_zip', 'de_plz')"
               },
               "values": {
diff --git a/schemas/cache/core/optimization-goal.json b/schemas/cache/core/optimization-goal.json
index 8fd8dcdd0..a1cce0d66 100644
--- a/schemas/cache/core/optimization-goal.json
+++ b/schemas/cache/core/optimization-goal.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/optimization-goal.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A single optimization target for a package. Packages accept an array of optimization_goals. When multiple goals are present, priority determines which the seller focuses on \u2014 1 is highest priority (primary goal); higher numbers are secondary. Duplicate priority values result in undefined seller behavior.",
   "oneOf": [
@@ -36,7 +35,7 @@
         "reach_unit": {
           "allOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json"
+              "$ref": "../enums/reach-unit.json"
             }
           ],
           "description": "Unit for reach measurement. Required when metric is 'reach'. Must be a value declared in the product's metric_optimization.supported_reach_units."
@@ -115,7 +114,7 @@
             "window": {
               "allOf": [
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                  "$ref": "duration.json"
                 }
               ],
               "description": "Time window over which frequency is measured (e.g. {\"interval\": 7, \"unit\": \"days\"} or {\"interval\": 1, \"unit\": \"campaign\"} for the full flight). Weekly windows are typical for brand campaigns; daily windows suit high-cadence direct response."
@@ -149,7 +148,7 @@
             "post_click": {
               "allOf": [
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                  "$ref": "duration.json"
                 }
               ],
               "description": "Post-click attribution window. Conversions within this duration after a click are attributed to the ad (e.g. {\"interval\": 7, \"unit\": \"days\"})."
@@ -157,7 +156,7 @@
             "post_view": {
               "allOf": [
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                  "$ref": "duration.json"
                 }
               ],
               "description": "Post-view attribution window. Conversions within this duration after an ad impression (without click) are attributed to the ad (e.g. {\"interval\": 1, \"unit\": \"days\"})."
@@ -183,7 +182,7 @@
                 "type": "string"
               },
               "event_type": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json",
+                "$ref": "../enums/event-type.json",
                 "description": "Event type to include from this source (e.g., purchase, lead, app_install, refund)"
               },
               "value_factor": {
diff --git a/schemas/cache/core/outcome-measurement.json b/schemas/cache/core/outcome-measurement.json
index 9ad903e99..b653407f5 100644
--- a/schemas/cache/core/outcome-measurement.json
+++ b/schemas/cache/core/outcome-measurement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/outcome-measurement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Business outcome measurement capabilities included with a product (e.g., incremental sales lift, brand lift, foot traffic). Distinct from delivery_measurement, which declares who counts ad impressions.",
@@ -32,7 +31,7 @@
     "window": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "duration.json"
         }
       ],
       "description": "Attribution window as a structured duration (e.g., {\"interval\": 30, \"unit\": \"days\"})."
diff --git a/schemas/cache/core/overlay.json b/schemas/cache/core/overlay.json
index c8ec96f56..a6fdec30f 100644
--- a/schemas/cache/core/overlay.json
+++ b/schemas/cache/core/overlay.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/overlay.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A publisher-controlled element that renders on top of buyer creative content within the ad placement. Creative agents should avoid placing critical content (CTAs, logos, key copy) within overlay bounds.",
diff --git a/schemas/cache/core/package.json b/schemas/cache/core/package.json
index e95a8b65d..a4abbeb52 100644
--- a/schemas/cache/core/package.json
+++ b/schemas/cache/core/package.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/package.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A specific product within a media buy (line item)",
@@ -34,7 +33,7 @@
           "type": "string"
         },
         "canceled_by": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/canceled-by.json",
+          "$ref": "../enums/canceled-by.json",
           "description": "Which party initiated the package cancellation."
         },
         "reason": {
@@ -52,17 +51,17 @@
     "catalogs": {
       "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Echoed from the create_media_buy request.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+        "$ref": "catalog.json"
       },
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "context.json"
     },
     "creative_assignments": {
       "description": "Creative assets assigned to this package",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-assignment.json"
+        "$ref": "creative-assignment.json"
       },
       "type": "array"
     },
@@ -77,19 +76,19 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "format_ids": {
       "description": "Format IDs active for this package. Echoed from the create_media_buy request; omitted means all formats for the product are active.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "type": "array"
     },
     "format_ids_to_provide": {
       "description": "Format IDs that creative assets will be provided for this package",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "type": "array"
     },
@@ -101,13 +100,13 @@
     "optimization_goals": {
       "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/optimization-goal.json"
+        "$ref": "optimization-goal.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "pacing": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/pacing.json"
+      "$ref": "../enums/pacing.json"
     },
     "package_id": {
       "description": "Seller's unique identifier for the package",
@@ -119,7 +118,7 @@
       "type": "boolean"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "../pricing-options/price-breakdown.json",
       "description": "Breakdown of the effective price for this package. On fixed-price packages, echoes the pricing option's breakdown. On auction packages, shows the clearing price breakdown including any commission or settlement terms."
     },
     "pricing_option_id": {
@@ -139,7 +138,7 @@
       "type": "string"
     },
     "targeting_overlay": {
-      "$ref": "/schemas/3.0.0-rc.3/core/targeting.json"
+      "$ref": "targeting.json"
     }
   },
   "required": [
diff --git a/schemas/cache/core/pagination-request.json b/schemas/cache/core/pagination-request.json
index 07cda495f..fd56f4b3c 100644
--- a/schemas/cache/core/pagination-request.json
+++ b/schemas/cache/core/pagination-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/pagination-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Standard cursor-based pagination parameters for list operations",
diff --git a/schemas/cache/core/pagination-response.json b/schemas/cache/core/pagination-response.json
index d41b1670d..6f7ae9f5f 100644
--- a/schemas/cache/core/pagination-response.json
+++ b/schemas/cache/core/pagination-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/pagination-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Standard cursor-based pagination metadata for list responses",
diff --git a/schemas/cache/core/performance-feedback.json b/schemas/cache/core/performance-feedback.json
index 37e3fe7c6..1e289867d 100644
--- a/schemas/cache/core/performance-feedback.json
+++ b/schemas/cache/core/performance-feedback.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/performance-feedback.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Represents performance feedback data for a media buy or package",
@@ -18,7 +17,7 @@
       "type": "string"
     },
     "feedback_source": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/feedback-source.json",
+      "$ref": "../enums/feedback-source.json",
       "description": "Source of the performance data"
     },
     "measurement_period": {
@@ -47,7 +46,7 @@
       "type": "string"
     },
     "metric_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/metric-type.json",
+      "$ref": "../enums/metric-type.json",
       "description": "The business metric being measured"
     },
     "package_id": {
diff --git a/schemas/cache/core/performance-standard.json b/schemas/cache/core/performance-standard.json
new file mode 100644
index 000000000..eebd298af
--- /dev/null
+++ b/schemas/cache/core/performance-standard.json
@@ -0,0 +1,32 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Performance Standard",
+  "description": "A rate threshold for a performance metric, measured by a specified vendor. The threshold is a floor or ceiling depending on the metric: viewability, completion_rate, brand_safety, and attention_score are floors (must exceed); ivt is a ceiling (must not exceed).",
+  "type": "object",
+  "properties": {
+    "metric": {
+      "$ref": "../enums/performance-standard-metric.json",
+      "description": "The performance metric this standard applies to."
+    },
+    "threshold": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 1,
+      "description": "Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold."
+    },
+    "standard": {
+      "$ref": "../enums/viewability-standard.json",
+      "description": "Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics."
+    },
+    "vendor": {
+      "$ref": "brand-ref.json",
+      "description": "Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor."
+    }
+  },
+  "required": [
+    "metric",
+    "threshold",
+    "vendor"
+  ],
+  "additionalProperties": true
+}
\ No newline at end of file
diff --git a/schemas/cache/core/placement-definition.json b/schemas/cache/core/placement-definition.json
index 0e26d7c76..447848a66 100644
--- a/schemas/cache/core/placement-definition.json
+++ b/schemas/cache/core/placement-definition.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/placement-definition.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -29,12 +28,12 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "format_ids": {
       "description": "Optional format IDs supported by this placement across the scoped properties and collections. Lets buyers answer which formats are available on which placements without relying on product-local definitions alone.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -50,7 +49,7 @@
     "property_ids": {
       "description": "Property IDs in this adagents.json where this placement can appear.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/property-id.json"
+        "$ref": "property-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -58,7 +57,7 @@
     "property_tags": {
       "description": "Property tags in this adagents.json where this placement can appear. Useful for network-wide positions such as 'pre_roll' or 'homepage_native_feed'.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/property-tag.json"
+        "$ref": "property-tag.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/placement.json b/schemas/cache/core/placement.json
index 29564e4ef..b198e968f 100644
--- a/schemas/cache/core/placement.json
+++ b/schemas/cache/core/placement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/placement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Represents a specific ad placement within a product's inventory. When the publisher declares a placement registry in adagents.json, products SHOULD reuse those placement_id values. Reusing a registered placement_id preserves the registry's semantic identity; product-level placement objects may narrow format_ids or add operational detail, but SHOULD NOT redefine the placement's meaning incompatibly.",
@@ -11,7 +10,7 @@
     "format_ids": {
       "description": "Format IDs supported by this specific placement. Can include: (1) concrete format_ids (fixed dimensions), (2) template format_ids without parameters (accepts any dimensions/duration), or (3) parameterized format_ids (specific dimension/duration constraints).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/planned-delivery.json b/schemas/cache/core/planned-delivery.json
index b400c5859..070295d3e 100644
--- a/schemas/cache/core/planned-delivery.json
+++ b/schemas/cache/core/planned-delivery.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/planned-delivery.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "The seller's interpreted delivery parameters for a media buy. Represents what the seller will actually run, which may differ from what the buyer requested (e.g., the seller may apply additional targeting, frequency caps, or adjust geo to match their inventory). Used for authorization verification and audit.",
@@ -11,7 +10,7 @@
     "audience_targeting": {
       "description": "Structured audience targeting the seller will activate. Each entry is either a signal reference or a descriptive criterion. When present, governance agents MUST use this for bias/fairness validation and SHOULD ignore audience_summary for validation purposes. The audience_summary field is a human-readable rendering of this array, not an independent declaration.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/audience-selector.json"
+        "$ref": "audience-selector.json"
       },
       "minItems": 1,
       "type": "array"
@@ -19,7 +18,7 @@
     "channels": {
       "description": "Channels the seller will deliver on.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "type": "array"
     },
@@ -41,10 +40,10 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "frequency_cap": {
-      "$ref": "/schemas/3.0.0-rc.3/core/frequency-cap.json",
+      "$ref": "frequency-cap.json",
       "description": "Frequency cap the seller will apply."
     },
     "geo": {
diff --git a/schemas/cache/core/price.json b/schemas/cache/core/price.json
index 615d50286..4c578512f 100644
--- a/schemas/cache/core/price.json
+++ b/schemas/cache/core/price.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/price.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A monetary amount with currency and optional billing period. Used across catalog item types for product prices, nightly hotel rates, salary ranges, rental costs, and similar monetary values.",
diff --git a/schemas/cache/core/pricing-option.json b/schemas/cache/core/pricing-option.json
index 26c813fd7..adc7f7c80 100644
--- a/schemas/cache/core/pricing-option.json
+++ b/schemas/cache/core/pricing-option.json
@@ -1,34 +1,33 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/pricing-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A pricing model option offered by a publisher for a product. Discriminated by pricing_model field. If fixed_price is present, it's fixed pricing. If absent, it's auction-based (floor_price and price_guidance optional). Bid-based auction models may also include max_bid as a boolean signal to interpret bid_price as a buyer ceiling instead of an exact honored price.",
   "oneOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpm-option.json"
+      "$ref": "../pricing-options/cpm-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/vcpm-option.json"
+      "$ref": "../pricing-options/vcpm-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpc-option.json"
+      "$ref": "../pricing-options/cpc-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpcv-option.json"
+      "$ref": "../pricing-options/cpcv-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpv-option.json"
+      "$ref": "../pricing-options/cpv-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpp-option.json"
+      "$ref": "../pricing-options/cpp-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/cpa-option.json"
+      "$ref": "../pricing-options/cpa-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/flat-rate-option.json"
+      "$ref": "../pricing-options/flat-rate-option.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/time-option.json"
+      "$ref": "../pricing-options/time-option.json"
     }
   ],
   "title": "Pricing Option"
diff --git a/schemas/cache/core/product-allocation.json b/schemas/cache/core/product-allocation.json
index 757255741..df5280dc0 100644
--- a/schemas/cache/core/product-allocation.json
+++ b/schemas/cache/core/product-allocation.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/product-allocation.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A budget allocation for a specific product within a proposal. Percentages across all allocations in a proposal should sum to 100.",
@@ -13,7 +12,7 @@
     "daypart_targets": {
       "description": "Recommended time windows for this allocation in spot-plan proposals.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/daypart-target.json"
+        "$ref": "daypart-target.json"
       },
       "minItems": 1,
       "type": "array"
@@ -24,10 +23,10 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "forecast": {
-      "$ref": "/schemas/3.0.0-rc.3/core/delivery-forecast.json",
+      "$ref": "delivery-forecast.json",
       "description": "Forecasted delivery metrics for this allocation"
     },
     "pricing_option_id": {
diff --git a/schemas/cache/core/product-filters.json b/schemas/cache/core/product-filters.json
index 8af80590f..b9f679d54 100644
--- a/schemas/cache/core/product-filters.json
+++ b/schemas/cache/core/product-filters.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/product-filters.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Structured filters for product discovery",
@@ -44,7 +43,7 @@
     "channels": {
       "description": "Filter by advertising channels (e.g., ['display', 'ctv', 'dooh'])",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "minItems": 1,
       "type": "array"
@@ -59,7 +58,7 @@
       "type": "array"
     },
     "delivery_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/delivery-type.json"
+      "$ref": "../enums/delivery-type.json"
     },
     "end_date": {
       "description": "Campaign end date (ISO 8601 date format: YYYY-MM-DD) for availability checks",
@@ -67,13 +66,13 @@
       "type": "string"
     },
     "exclusivity": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/exclusivity.json",
+      "$ref": "../enums/exclusivity.json",
       "description": "Filter by exclusivity level. Returns products matching the specified exclusivity (e.g., 'exclusive' returns only sole-sponsorship products)."
     },
     "format_ids": {
       "description": "Filter by specific format IDs",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -191,7 +190,7 @@
             "description": "Simple radius from the point",
             "properties": {
               "unit": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/distance-unit.json",
+                "$ref": "../enums/distance-unit.json",
                 "description": "Distance unit"
               },
               "value": {
@@ -207,7 +206,7 @@
             "type": "object"
           },
           "transport_mode": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/transport-mode.json",
+            "$ref": "../enums/transport-mode.json",
             "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
           },
           "travel_time": {
@@ -283,7 +282,7 @@
             "type": "string"
           },
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json",
+            "$ref": "../enums/metro-system.json",
             "description": "Metro classification system"
           }
         },
@@ -307,7 +306,7 @@
         "additionalProperties": false,
         "properties": {
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json",
+            "$ref": "../enums/postal-system.json",
             "description": "Postal code system (e.g., 'us_zip', 'gb_outward')"
           },
           "values": {
@@ -348,7 +347,7 @@
       "type": "array"
     },
     "required_features": {
-      "$ref": "/schemas/3.0.0-rc.3/core/media-buy-features.json",
+      "$ref": "media-buy-features.json",
       "description": "Filter to products from sellers supporting specific protocol features. Only features set to true are used for filtering."
     },
     "required_geo_targeting": {
@@ -357,7 +356,7 @@
         "additionalProperties": false,
         "properties": {
           "level": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/geo-level.json",
+            "$ref": "../enums/geo-level.json",
             "description": "Geographic targeting level (country, region, metro, postal_area)"
           },
           "system": {
@@ -376,7 +375,7 @@
     "signal_targeting": {
       "description": "Filter to products supporting specific signals from data provider catalogs. Products must have the requested signals in their data_provider_signals and signal_targeting_allowed must be true (or all signals requested).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/signal-targeting.json"
+        "$ref": "signal-targeting.json"
       },
       "minItems": 1,
       "type": "array"
@@ -424,7 +423,7 @@
         "response_types": {
           "description": "Filter to products supporting specific TMP response types (e.g., 'activation', 'creative', 'catalog_items'). Products must support at least one of the listed types.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/response-type.json"
+            "$ref": "../enums/response-type.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/core/product.json b/schemas/cache/core/product.json
index 96982a447..346c7a824 100644
--- a/schemas/cache/core/product.json
+++ b/schemas/cache/core/product.json
@@ -1,227 +1,152 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/product.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Product",
   "description": "Represents available advertising inventory",
+  "type": "object",
   "properties": {
-    "brief_relevance": {
-      "description": "Explanation of why this product matches the brief (only included when brief is provided)",
-      "type": "string"
+    "product_id": {
+      "type": "string",
+      "description": "Unique identifier for the product"
     },
-    "catalog_match": {
-      "description": "When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).",
-      "properties": {
-        "matched_count": {
-          "description": "Number of catalog items that matched this product's inventory.",
-          "minimum": 0,
-          "type": "integer"
-        },
-        "matched_gtins": {
-          "description": "GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching.",
-          "items": {
-            "pattern": "^[0-9]{8,14}$",
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "matched_ids": {
-          "description": "Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs).",
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "submitted_count": {
-          "description": "Total catalog items evaluated from the buyer's catalog.",
-          "minimum": 0,
-          "type": "integer"
-        }
-      },
-      "required": [
-        "submitted_count"
-      ],
-      "type": "object"
+    "name": {
+      "type": "string",
+      "description": "Human-readable product name"
     },
-    "catalog_types": {
-      "description": "Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares [\"product\"], a job board declares [\"job\", \"offering\"]. Buyers match synced catalogs to products via this field.",
+    "description": {
+      "type": "string",
+      "description": "Detailed description of the product and its inventory"
+    },
+    "publisher_properties": {
+      "type": "array",
+      "description": "Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/catalog-type.json"
+        "$ref": "publisher-property-selector.json"
       },
-      "minItems": 1,
-      "type": "array",
-      "uniqueItems": true
+      "minItems": 1
     },
     "channels": {
+      "type": "array",
       "description": "Advertising channels this product is sold as. Products inherit from their properties' supported_channels but may narrow the scope. For example, a product covering YouTube properties might be sold as ['ctv'] even though those properties support ['olv', 'social', 'ctv'].",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
-      "type": "array",
       "uniqueItems": true
     },
-    "collection_targeting_allowed": {
-      "default": false,
-      "description": "Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle \u2014 buyers get all listed collections. When true, buyers can select specific collections in the media buy.",
-      "type": "boolean"
+    "format_ids": {
+      "type": "array",
+      "description": "Array of supported creative format IDs - structured format_id objects with agent_url and id",
+      "items": {
+        "$ref": "format-id.json"
+      }
     },
-    "collections": {
-      "description": "Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.",
+    "placements": {
+      "type": "array",
+      "description": "Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/collection-selector.json"
+        "$ref": "placement.json"
       },
-      "minItems": 1,
-      "type": "array"
+      "minItems": 1
     },
-    "conversion_tracking": {
-      "additionalProperties": true,
-      "description": "Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities.",
-      "properties": {
-        "action_sources": {
-          "description": "Action sources relevant to this product (e.g. a retail media product might have 'in_store' and 'website', while a display product might only have 'website')",
-          "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/action-source.json"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "platform_managed": {
-          "description": "Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'.",
-          "type": "boolean"
-        },
-        "supported_targets": {
-          "description": "Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted \u2014 goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget \u2014 no declaration needed for that mode. When omitted, buyers can still set target-less event goals.",
-          "items": {
-            "enum": [
-              "cost_per",
-              "per_ad_spend",
-              "maximize_value"
-            ],
-            "type": "string"
-          },
-          "minItems": 1,
-          "type": "array"
-        }
-      },
-      "type": "object"
+    "delivery_type": {
+      "$ref": "../enums/delivery-type.json"
     },
-    "creative_policy": {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-policy.json"
+    "exclusivity": {
+      "$ref": "../enums/exclusivity.json",
+      "description": "Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements."
     },
-    "data_provider_signals": {
-      "description": "Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization.",
+    "pricing_options": {
+      "type": "array",
+      "description": "Available pricing models for this product",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/data-provider-signal-selector.json"
+        "$ref": "pricing-option.json"
       },
-      "type": "array"
+      "minItems": 1
+    },
+    "forecast": {
+      "$ref": "delivery-forecast.json",
+      "description": "Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal."
+    },
+    "outcome_measurement": {
+      "$ref": "outcome-measurement.json"
     },
     "delivery_measurement": {
+      "type": "object",
       "description": "Measurement provider and methodology for delivery metrics. The buyer accepts the declared provider as the source of truth for the buy. When absent, buyers should apply their own measurement defaults.",
       "properties": {
-        "notes": {
-          "description": "Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')",
-          "type": "string"
-        },
         "provider": {
-          "description": "Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')",
-          "type": "string"
+          "type": "string",
+          "description": "Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')"
+        },
+        "notes": {
+          "type": "string",
+          "description": "Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')"
         }
       },
       "required": [
         "provider"
-      ],
-      "type": "object"
+      ]
     },
-    "delivery_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/delivery-type.json"
-    },
-    "description": {
-      "description": "Detailed description of the product and its inventory",
-      "type": "string"
+    "measurement_terms": {
+      "$ref": "measurement-terms.json",
+      "description": "Seller's default billing measurement and makegood terms. Declares who counts the billing metric and what remedies apply when thresholds are breached. Buyers may propose different terms at media buy creation \u2014 sellers accept, reject (TERMS_REJECTED), or adjust per their policy."
     },
-    "enforced_policies": {
-      "description": "Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.",
+    "performance_standards": {
+      "type": "array",
+      "description": "Seller's default performance standards for this product: viewability, IVT, completion rate, brand safety, attention score. Buyers may propose different standards at media buy creation. When absent, no structured performance standards apply.",
       "items": {
-        "type": "string"
+        "$ref": "performance-standard.json"
       },
-      "type": "array"
+      "minItems": 1
     },
-    "exclusivity": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/exclusivity.json",
-      "description": "Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements."
+    "cancellation_policy": {
+      "$ref": "cancellation-policy.json",
+      "description": "Cancellation terms for this product. Declares the minimum notice period required before cancellation takes effect and any penalties for insufficient notice. Relevant for guaranteed delivery products. Buyers accept these terms by creating a media buy against the product."
     },
-    "expires_at": {
-      "description": "Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it.",
-      "format": "date-time",
-      "type": "string"
+    "reporting_capabilities": {
+      "$ref": "reporting-capabilities.json"
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+    "creative_policy": {
+      "$ref": "creative-policy.json"
     },
-    "forecast": {
-      "$ref": "/schemas/3.0.0-rc.3/core/delivery-forecast.json",
-      "description": "Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal."
+    "is_custom": {
+      "type": "boolean",
+      "description": "Whether this is a custom product"
     },
-    "format_ids": {
-      "description": "Array of supported creative format IDs - structured format_id objects with agent_url and id",
-      "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
-      },
-      "type": "array"
+    "property_targeting_allowed": {
+      "type": "boolean",
+      "default": false,
+      "description": "Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results."
     },
-    "installments": {
-      "description": "Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).",
+    "data_provider_signals": {
+      "type": "array",
+      "description": "Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/installment.json"
-      },
-      "type": "array"
+        "$ref": "data-provider-signal-selector.json"
+      }
     },
-    "is_custom": {
-      "description": "Whether this is a custom product",
-      "type": "boolean"
+    "signal_targeting_allowed": {
+      "type": "boolean",
+      "default": false,
+      "description": "Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals."
     },
-    "material_submission": {
-      "additionalProperties": true,
-      "description": "Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation.",
-      "minProperties": 1,
-      "properties": {
-        "email": {
-          "description": "Email address for creative material submission",
-          "format": "email",
-          "type": "string"
-        },
-        "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-        },
-        "instructions": {
-          "description": "Human-readable instructions for material submission (file naming conventions, shipping address, etc.)",
-          "maxLength": 2000,
-          "type": "string"
-        },
-        "url": {
-          "description": "HTTPS URL for uploading or submitting physical creative materials",
-          "format": "uri",
-          "pattern": "^https://",
-          "type": "string"
-        }
+    "catalog_types": {
+      "type": "array",
+      "description": "Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares [\"product\"], a job board declares [\"job\", \"offering\"]. Buyers match synced catalogs to products via this field.",
+      "items": {
+        "$ref": "../enums/catalog-type.json"
       },
-      "type": "object"
-    },
-    "max_optimization_goals": {
-      "description": "Maximum number of optimization_goals this product accepts on a package. When absent, no limit is declared. Most social platforms accept only 1 goal \u2014 buyers sending arrays longer than this value should expect the seller to use only the highest-priority (lowest priority number) goal.",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "measurement_readiness": {
-      "$ref": "/schemas/3.0.0-rc.3/core/measurement-readiness.json",
-      "description": "Assessment of whether the buyer's event source setup is sufficient for this product to optimize effectively. Only present when the seller can evaluate the buyer's account context. Buyers should check this before creating media buys with event-based optimization goals."
+      "uniqueItems": true,
+      "minItems": 1
     },
     "metric_optimization": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Metric optimization capabilities for this product. Presence indicates the product supports optimization_goals with kind: 'metric'. No event source or conversion tracking setup required \u2014 the seller tracks these metrics natively.",
       "properties": {
         "supported_metrics": {
+          "type": "array",
           "description": "Metric kinds this product can optimize for. Buyers should only request metric goals for kinds listed here.",
           "items": {
+            "type": "string",
             "enum": [
               "clicks",
               "views",
@@ -234,197 +159,288 @@
               "saves",
               "profile_visits",
               "reach"
-            ],
-            "type": "string"
+            ]
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         },
         "supported_reach_units": {
+          "type": "array",
           "description": "Reach units this product can optimize for. Required when supported_metrics includes 'reach'. Buyers must set reach_unit to a value in this list on reach optimization goals \u2014 sellers reject unsupported values.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json"
+            "$ref": "../enums/reach-unit.json"
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
+        },
+        "supported_view_durations": {
+          "type": "array",
+          "description": "Video view duration thresholds (in seconds) this product supports for completed_views goals. Only relevant when supported_metrics includes 'completed_views'. When absent, the seller uses their platform default. Buyers must set view_duration_seconds to a value in this list \u2014 sellers reject unsupported values.",
+          "items": {
+            "type": "number",
+            "exclusiveMinimum": 0
+          }
         },
         "supported_targets": {
+          "type": "array",
           "description": "Target kinds available for metric goals on this product. Values match target.kind on the optimization goal. Only these target kinds are accepted \u2014 goals with unlisted target kinds will be rejected. When omitted, buyers can set target-less metric goals (maximize volume within budget) but cannot set specific targets.",
           "items": {
+            "type": "string",
             "enum": [
               "cost_per",
               "threshold_rate"
-            ],
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "supported_view_durations": {
-          "description": "Video view duration thresholds (in seconds) this product supports for completed_views goals. Only relevant when supported_metrics includes 'completed_views'. When absent, the seller uses their platform default. Buyers must set view_duration_seconds to a value in this list \u2014 sellers reject unsupported values.",
-          "items": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "type": "array"
+            ]
+          }
         }
       },
       "required": [
         "supported_metrics"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "name": {
-      "description": "Human-readable product name",
-      "type": "string"
+    "max_optimization_goals": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Maximum number of optimization_goals this product accepts on a package. When absent, no limit is declared. Most social platforms accept only 1 goal \u2014 buyers sending arrays longer than this value should expect the seller to use only the highest-priority (lowest priority number) goal."
     },
-    "outcome_measurement": {
-      "$ref": "/schemas/3.0.0-rc.3/core/outcome-measurement.json"
+    "measurement_readiness": {
+      "$ref": "measurement-readiness.json",
+      "description": "Assessment of whether the buyer's event source setup is sufficient for this product to optimize effectively. Only present when the seller can evaluate the buyer's account context. Buyers should check this before creating media buys with event-based optimization goals."
     },
-    "placements": {
-      "description": "Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.",
-      "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/placement.json"
+    "conversion_tracking": {
+      "type": "object",
+      "description": "Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities.",
+      "properties": {
+        "action_sources": {
+          "type": "array",
+          "description": "Action sources relevant to this product (e.g. a retail media product might have 'in_store' and 'website', while a display product might only have 'website')",
+          "items": {
+            "$ref": "../enums/action-source.json"
+          },
+          "minItems": 1
+        },
+        "supported_targets": {
+          "type": "array",
+          "description": "Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted \u2014 goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget \u2014 no declaration needed for that mode. When omitted, buyers can still set target-less event goals.",
+          "items": {
+            "type": "string",
+            "enum": [
+              "cost_per",
+              "per_ad_spend",
+              "maximize_value"
+            ]
+          },
+          "minItems": 1
+        },
+        "platform_managed": {
+          "type": "boolean",
+          "description": "Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'."
+        }
       },
-      "minItems": 1,
-      "type": "array"
+      "additionalProperties": true
     },
-    "pricing_options": {
-      "description": "Available pricing models for this product",
-      "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/pricing-option.json"
+    "catalog_match": {
+      "type": "object",
+      "description": "When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).",
+      "properties": {
+        "matched_gtins": {
+          "type": "array",
+          "description": "GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching.",
+          "items": {
+            "type": "string",
+            "pattern": "^[0-9]{8,14}$"
+          }
+        },
+        "matched_ids": {
+          "type": "array",
+          "description": "Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs).",
+          "items": {
+            "type": "string"
+          }
+        },
+        "matched_count": {
+          "type": "integer",
+          "description": "Number of catalog items that matched this product's inventory.",
+          "minimum": 0
+        },
+        "submitted_count": {
+          "type": "integer",
+          "description": "Total catalog items evaluated from the buyer's catalog.",
+          "minimum": 0
+        }
       },
-      "minItems": 1,
-      "type": "array"
+      "required": [
+        "submitted_count"
+      ]
+    },
+    "brief_relevance": {
+      "type": "string",
+      "description": "Explanation of why this product matches the brief (only included when brief is provided)"
+    },
+    "expires_at": {
+      "type": "string",
+      "format": "date-time",
+      "description": "Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it."
     },
     "product_card": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optional standard visual card (300x400px) for displaying this product in user interfaces. Can be rendered via preview_creative or pre-generated.",
       "properties": {
         "format_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+          "$ref": "format-id.json",
           "description": "Creative format defining the card layout (typically product_card_standard)"
         },
         "manifest": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Asset manifest for rendering the card, structure defined by the format",
-          "type": "object"
+          "additionalProperties": true
         }
       },
       "required": [
         "format_id",
         "manifest"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
     "product_card_detailed": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Optional detailed card with carousel and full specifications. Provides rich product presentation similar to media kit pages.",
       "properties": {
         "format_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+          "$ref": "format-id.json",
           "description": "Creative format defining the detailed card layout (typically product_card_detailed)"
         },
         "manifest": {
-          "additionalProperties": true,
+          "type": "object",
           "description": "Asset manifest for rendering the detailed card, structure defined by the format",
-          "type": "object"
+          "additionalProperties": true
         }
       },
       "required": [
         "format_id",
         "manifest"
       ],
-      "type": "object"
+      "additionalProperties": true
     },
-    "product_id": {
-      "description": "Unique identifier for the product",
-      "type": "string"
+    "collections": {
+      "type": "array",
+      "description": "Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.",
+      "items": {
+        "$ref": "collection-selector.json"
+      },
+      "minItems": 1
     },
-    "property_targeting_allowed": {
+    "collection_targeting_allowed": {
+      "type": "boolean",
       "default": false,
-      "description": "Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results.",
-      "type": "boolean"
+      "description": "Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle \u2014 buyers get all listed collections. When true, buyers can select specific collections in the media buy."
     },
-    "publisher_properties": {
-      "description": "Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
+    "installments": {
+      "type": "array",
+      "description": "Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/publisher-property-selector.json"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "reporting_capabilities": {
-      "$ref": "/schemas/3.0.0-rc.3/core/reporting-capabilities.json"
+        "$ref": "installment.json"
+      }
     },
-    "signal_targeting_allowed": {
-      "default": false,
-      "description": "Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals.",
-      "type": "boolean"
+    "enforced_policies": {
+      "type": "array",
+      "description": "Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.",
+      "items": {
+        "type": "string"
+      }
     },
     "trusted_match": {
-      "additionalProperties": true,
+      "type": "object",
       "description": "Trusted Match Protocol capabilities for this product. When present, the product supports real-time contextual and/or identity matching via TMP. Buyers use this to determine what response types the publisher can accept and whether brands can be selected dynamically at match time.",
       "properties": {
         "context_match": {
-          "default": true,
+          "type": "boolean",
           "description": "Whether this product supports Context Match requests. When true, the publisher's TMP router will send context match requests to registered providers for this product's inventory.",
-          "type": "boolean"
-        },
-        "dynamic_brands": {
-          "default": false,
-          "description": "Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand \u2014 the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context.",
-          "type": "boolean"
+          "default": true
         },
         "identity_match": {
-          "default": false,
+          "type": "boolean",
           "description": "Whether this product supports Identity Match requests. When true, the publisher's TMP router will send identity match requests to evaluate user eligibility.",
-          "type": "boolean"
+          "default": false
+        },
+        "response_types": {
+          "type": "array",
+          "description": "What the publisher can accept back from context match.",
+          "items": {
+            "$ref": "../enums/response-type.json"
+          },
+          "minItems": 1,
+          "default": [
+            "activation"
+          ]
+        },
+        "dynamic_brands": {
+          "type": "boolean",
+          "description": "Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand \u2014 the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context.",
+          "default": false
         },
         "providers": {
+          "type": "array",
           "description": "TMP providers integrated with this product's inventory. Each entry identifies a provider by agent_url (from the registry) and declares what match types it supports for this product. The product-level context_match and identity_match booleans declare what the product supports overall; the per-provider booleans declare which provider handles each match type. Enables buyer discovery: 'find products where a specific provider does context matching.'",
           "items": {
-            "additionalProperties": true,
+            "type": "object",
             "properties": {
               "agent_url": {
-                "description": "Provider's agent URL from the registry. Canonical identifier for this TMP provider.",
+                "type": "string",
                 "format": "uri",
-                "type": "string"
+                "description": "Provider's agent URL from the registry. Canonical identifier for this TMP provider."
               },
               "context_match": {
-                "default": false,
+                "type": "boolean",
                 "description": "Whether this provider handles context match for this product.",
-                "type": "boolean"
+                "default": false
               },
               "identity_match": {
-                "default": false,
+                "type": "boolean",
                 "description": "Whether this provider handles identity match for this product.",
-                "type": "boolean"
+                "default": false
               }
             },
             "required": [
               "agent_url"
             ],
-            "type": "object"
-          },
-          "minItems": 1,
-          "type": "array"
-        },
-        "response_types": {
-          "default": [
-            "activation"
-          ],
-          "description": "What the publisher can accept back from context match.",
-          "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/response-type.json"
+            "additionalProperties": true
           },
-          "minItems": 1,
-          "type": "array"
+          "minItems": 1
         }
       },
       "required": [
         "context_match"
       ],
-      "type": "object"
+      "additionalProperties": true
+    },
+    "material_submission": {
+      "type": "object",
+      "description": "Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation.",
+      "properties": {
+        "url": {
+          "type": "string",
+          "format": "uri",
+          "pattern": "^https://",
+          "description": "HTTPS URL for uploading or submitting physical creative materials"
+        },
+        "email": {
+          "type": "string",
+          "format": "email",
+          "description": "Email address for creative material submission"
+        },
+        "instructions": {
+          "type": "string",
+          "description": "Human-readable instructions for material submission (file naming conventions, shipping address, etc.)",
+          "maxLength": 2000
+        },
+        "ext": {
+          "$ref": "ext.json"
+        }
+      },
+      "minProperties": 1,
+      "additionalProperties": true
+    },
+    "ext": {
+      "$ref": "ext.json"
     }
   },
   "required": [
@@ -434,8 +450,8 @@
     "publisher_properties",
     "format_ids",
     "delivery_type",
-    "pricing_options"
+    "pricing_options",
+    "reporting_capabilities"
   ],
-  "title": "Product",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/property-id.json b/schemas/cache/core/property-id.json
index 2aedff051..e36c082cf 100644
--- a/schemas/cache/core/property-id.json
+++ b/schemas/cache/core/property-id.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/property-id.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Identifier for a publisher property. Must be lowercase alphanumeric with underscores only.",
   "examples": [
diff --git a/schemas/cache/core/property-list-ref.json b/schemas/cache/core/property-list-ref.json
index 07ba43c0f..7f3748775 100644
--- a/schemas/cache/core/property-list-ref.json
+++ b/schemas/cache/core/property-list-ref.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/property-list-ref.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Reference to an externally managed property list. Enables passing large property sets (50,000+) without embedding them in requests. The receiving agent fetches and caches the list independently.",
diff --git a/schemas/cache/core/property-tag.json b/schemas/cache/core/property-tag.json
index 74d225830..02311ad36 100644
--- a/schemas/cache/core/property-tag.json
+++ b/schemas/cache/core/property-tag.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/property-tag.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Tag for categorizing publisher properties. Must be lowercase alphanumeric with underscores only.",
   "examples": [
diff --git a/schemas/cache/core/property.json b/schemas/cache/core/property.json
index af8995644..949f1116e 100644
--- a/schemas/cache/core/property.json
+++ b/schemas/cache/core/property.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/property.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "An advertising property that can be validated via adagents.json",
@@ -10,7 +9,7 @@
         "additionalProperties": true,
         "properties": {
           "type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/identifier-types.json",
+            "$ref": "../enums/identifier-types.json",
             "description": "Type of identifier for this property"
           },
           "value": {
@@ -32,11 +31,11 @@
       "type": "string"
     },
     "property_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/property-id.json",
+      "$ref": "property-id.json",
       "description": "Unique identifier for this property (optional). Enables referencing properties by ID instead of repeating full objects."
     },
     "property_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/property-type.json",
+      "$ref": "../enums/property-type.json",
       "description": "Type of advertising property"
     },
     "publisher_domain": {
@@ -46,7 +45,7 @@
     "supported_channels": {
       "description": "Advertising channels this property supports (e.g., ['display', 'olv', 'social']). Publishers declare which channels their inventory aligns with. Properties may support multiple channels. See the Media Channel Taxonomy for definitions.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -54,7 +53,7 @@
     "tags": {
       "description": "Tags for categorization and grouping (e.g., network membership, content categories)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/property-tag.json"
+        "$ref": "property-tag.json"
       },
       "type": "array",
       "uniqueItems": true
diff --git a/schemas/cache/core/proposal.json b/schemas/cache/core/proposal.json
index c796005f9..3a964db43 100644
--- a/schemas/cache/core/proposal.json
+++ b/schemas/cache/core/proposal.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/proposal.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A proposed media plan with budget allocations across products. Represents the publisher's strategic recommendation for how to structure a campaign based on the brief. Proposals are actionable - buyers can execute them directly via create_media_buy by providing the proposal_id.",
@@ -7,7 +6,7 @@
     "allocations": {
       "description": "Budget allocations across products. Allocation percentages MUST sum to 100. Publishers are responsible for ensuring the sum equals 100; buyers SHOULD validate this before execution.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/product-allocation.json"
+        "$ref": "product-allocation.json"
       },
       "minItems": 1,
       "type": "array"
@@ -28,14 +27,14 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "forecast": {
-      "$ref": "/schemas/3.0.0-rc.3/core/delivery-forecast.json",
+      "$ref": "delivery-forecast.json",
       "description": "Aggregate forecasted delivery metrics for the entire proposal. When both proposal-level and allocation-level forecasts are present, the proposal-level forecast is authoritative for total delivery estimation."
     },
     "insertion_order": {
-      "$ref": "/schemas/3.0.0-rc.3/core/insertion-order.json",
+      "$ref": "insertion-order.json",
       "description": "Formal insertion order attached to a committed proposal. Present when the seller requires a signed agreement before the media buy can proceed. The buyer references the io_id in io_acceptance on create_media_buy."
     },
     "name": {
@@ -49,7 +48,7 @@
       "type": "string"
     },
     "proposal_status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/proposal-status.json",
+      "$ref": "../enums/proposal-status.json",
       "description": "Lifecycle status of this proposal. When absent, the proposal is ready to buy (backward compatible). 'draft' means indicative pricing \u2014 finalize via refine before purchasing. 'committed' means firm pricing with inventory reserved until expires_at."
     },
     "total_budget_guidance": {
diff --git a/schemas/cache/core/protocol-envelope.json b/schemas/cache/core/protocol-envelope.json
index 484ea1f3d..17b3d8c43 100644
--- a/schemas/cache/core/protocol-envelope.json
+++ b/schemas/cache/core/protocol-envelope.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/protocol-envelope.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Standard envelope structure for AdCP task responses. This envelope is added by the protocol layer (MCP, A2A, REST) and wraps the task-specific response payload. Task response schemas should NOT include these fields - they are protocol-level concerns.",
@@ -127,11 +126,11 @@
       "type": "object"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "push-notification-config.json",
       "description": "Push notification configuration for async task updates (A2A and REST protocols). Echoed from the request to confirm webhook settings. Specifies URL, authentication scheme (Bearer or HMAC-SHA256), and credentials. MCP uses progress notifications instead of webhooks."
     },
     "status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/task-status.json",
+      "$ref": "../enums/task-status.json",
       "description": "Current task execution state. Indicates whether the task is completed, in progress (working), submitted for async processing, failed, or requires user input. Managed by the protocol layer."
     },
     "task_id": {
diff --git a/schemas/cache/core/provenance.json b/schemas/cache/core/provenance.json
index 03fb1fdf7..4a8d0783c 100644
--- a/schemas/cache/core/provenance.json
+++ b/schemas/cache/core/provenance.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/provenance.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Declares how content was produced, whether AI was involved, and what disclosure obligations apply. Attaches to creative manifests, individual assets, or content-standards artifacts. When present at multiple levels, the most specific provenance object replaces the inherited one entirely (no field-level merging). Provenance is a claim by the declaring party \u2014 receiving parties should verify claims independently via their own detection tools.",
@@ -85,7 +84,7 @@
       "type": "object"
     },
     "digital_source_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/digital-source-type.json",
+      "$ref": "../enums/digital-source-type.json",
       "description": "IPTC-aligned classification of AI involvement in producing this content"
     },
     "disclosure": {
@@ -119,7 +118,7 @@
                 "minProperties": 1,
                 "properties": {
                   "ext": {
-                    "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+                    "$ref": "ext.json"
                   },
                   "min_duration_ms": {
                     "description": "Minimum display duration in milliseconds for initial persistence. Recommended when persistence is initial \u2014 without it, the duration is at the publisher's discretion. At serve time the publisher reads this from provenance since the brief is not available.",
@@ -127,13 +126,13 @@
                     "type": "integer"
                   },
                   "persistence": {
-                    "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json",
+                    "$ref": "../enums/disclosure-persistence.json",
                     "description": "How long the disclosure must persist during content playback or display"
                   },
                   "positions": {
                     "description": "Preferred disclosure positions in priority order. The first position a format supports should be used.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json"
+                      "$ref": "../enums/disclosure-position.json"
                     },
                     "minItems": 1,
                     "type": "array",
@@ -163,7 +162,7 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "human_oversight": {
       "description": "Level of human involvement in the AI-assisted creation process",
diff --git a/schemas/cache/core/publisher-property-selector.json b/schemas/cache/core/publisher-property-selector.json
index 2ec4eab72..f4df5fe6c 100644
--- a/schemas/cache/core/publisher-property-selector.json
+++ b/schemas/cache/core/publisher-property-selector.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/publisher-property-selector.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Selects properties from a publisher's adagents.json. Used for both product definitions and agent authorization. Supports three selection patterns: all properties, specific IDs, or by tags.",
   "discriminator": {
@@ -34,7 +33,7 @@
         "property_ids": {
           "description": "Specific property IDs from the publisher's adagents.json",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/property-id.json"
+            "$ref": "property-id.json"
           },
           "minItems": 1,
           "type": "array"
@@ -64,7 +63,7 @@
         "property_tags": {
           "description": "Property tags from the publisher's adagents.json. Selector covers all properties with these tags",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/property-tag.json"
+            "$ref": "property-tag.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/core/push-notification-config.json b/schemas/cache/core/push-notification-config.json
index 79927dd4f..eb53ac39b 100644
--- a/schemas/cache/core/push-notification-config.json
+++ b/schemas/cache/core/push-notification-config.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Webhook configuration for asynchronous task notifications. Uses A2A-compatible PushNotificationConfig structure. Supports Bearer tokens (simple) or HMAC signatures (production-recommended). This schema is designed for composition via allOf - consuming schemas should define their own additionalProperties constraints.",
   "properties": {
@@ -15,7 +14,7 @@
         "schemes": {
           "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/auth-scheme.json"
+            "$ref": "../enums/auth-scheme.json"
           },
           "maxItems": 1,
           "minItems": 1,
diff --git a/schemas/cache/core/real-estate-item.json b/schemas/cache/core/real-estate-item.json
index 32a508cfe..cf9e49c9c 100644
--- a/schemas/cache/core/real-estate-item.json
+++ b/schemas/cache/core/real-estate-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/real-estate-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A property listing within a real-estate-type catalog. Carries the address, pricing, and specification data that platforms use for real estate ads and dynamic remarketing. Maps to Google DynamicRealEstateAsset, Meta home listing catalogs, and similar formats.",
@@ -127,7 +126,7 @@
     "assets": {
       "description": "Typed creative asset pools for this property listing. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior/interior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -147,7 +146,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "image_url": {
       "description": "Primary property image URL.",
@@ -194,7 +193,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Property price or rental rate. Use period 'month' for rentals."
     },
     "property_type": {
diff --git a/schemas/cache/core/reference-asset.json b/schemas/cache/core/reference-asset.json
index cbfb6783f..d539b0948 100644
--- a/schemas/cache/core/reference-asset.json
+++ b/schemas/cache/core/reference-asset.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/reference-asset.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A reference asset that provides creative context. Carries visual materials (mood boards, product shots, example creatives) with semantic roles that tell creative agents how to use them.",
diff --git a/schemas/cache/core/reporting-capabilities.json b/schemas/cache/core/reporting-capabilities.json
index d7c11b709..ca3703224 100644
--- a/schemas/cache/core/reporting-capabilities.json
+++ b/schemas/cache/core/reporting-capabilities.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/reporting-capabilities.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Reporting capabilities available for a product",
@@ -20,7 +19,7 @@
         ]
       ],
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/available-metric.json"
+        "$ref": "../enums/available-metric.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -28,7 +27,7 @@
     "available_reporting_frequencies": {
       "description": "Supported reporting frequency options",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/reporting-frequency.json"
+        "$ref": "../enums/reporting-frequency.json"
       },
       "minItems": 1,
       "type": "array",
@@ -70,7 +69,7 @@
       "type": "boolean"
     },
     "supports_geo_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/core/geo-breakdown-support.json",
+      "$ref": "geo-breakdown-support.json",
       "description": "Geographic breakdown support for this product. Declares which geo levels and systems are available for by_geo reporting within by_package."
     },
     "supports_keyword_breakdown": {
diff --git a/schemas/cache/core/reporting-webhook.json b/schemas/cache/core/reporting-webhook.json
index fcc95b9ff..ff3f0736d 100644
--- a/schemas/cache/core/reporting-webhook.json
+++ b/schemas/cache/core/reporting-webhook.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/reporting-webhook.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Webhook configuration for automated reporting delivery. Configures where and how campaign performance reports are sent.",
@@ -16,7 +15,7 @@
         "schemes": {
           "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/auth-scheme.json"
+            "$ref": "../enums/auth-scheme.json"
           },
           "maxItems": 1,
           "minItems": 1,
@@ -41,7 +40,7 @@
     "requested_metrics": {
       "description": "Optional list of metrics to include in webhook notifications. If omitted, all available metrics are included. Must be subset of product's available_metrics.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/available-metric.json"
+        "$ref": "../enums/available-metric.json"
       },
       "type": "array",
       "uniqueItems": true
diff --git a/schemas/cache/core/requirements/asset-requirements.json b/schemas/cache/core/requirements/asset-requirements.json
index 393c03958..71c62ed42 100644
--- a/schemas/cache/core/requirements/asset-requirements.json
+++ b/schemas/cache/core/requirements/asset-requirements.json
@@ -1,42 +1,41 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "anyOf": [
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/image-asset-requirements.json"
+      "$ref": "image-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/video-asset-requirements.json"
+      "$ref": "video-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/audio-asset-requirements.json"
+      "$ref": "audio-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/text-asset-requirements.json"
+      "$ref": "text-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/markdown-asset-requirements.json"
+      "$ref": "markdown-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/html-asset-requirements.json"
+      "$ref": "html-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/css-asset-requirements.json"
+      "$ref": "css-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/javascript-asset-requirements.json"
+      "$ref": "javascript-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/vast-asset-requirements.json"
+      "$ref": "vast-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/daast-asset-requirements.json"
+      "$ref": "daast-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/url-asset-requirements.json"
+      "$ref": "url-asset-requirements.json"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/webhook-asset-requirements.json"
+      "$ref": "webhook-asset-requirements.json"
     }
   ],
   "description": "Technical requirements for creative assets. The applicable schema is determined by the sibling asset_type field.",
diff --git a/schemas/cache/core/requirements/audio-asset-requirements.json b/schemas/cache/core/requirements/audio-asset-requirements.json
index 713ff392d..2d0360879 100644
--- a/schemas/cache/core/requirements/audio-asset-requirements.json
+++ b/schemas/cache/core/requirements/audio-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/audio-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for audio creative assets.",
diff --git a/schemas/cache/core/requirements/catalog-field-binding.json b/schemas/cache/core/requirements/catalog-field-binding.json
index f6b22382c..66338b3c0 100644
--- a/schemas/cache/core/requirements/catalog-field-binding.json
+++ b/schemas/cache/core/requirements/catalog-field-binding.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/catalog-field-binding.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "definitions": {
     "AssetPoolBinding": {
@@ -15,7 +14,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../../core/ext.json"
         },
         "kind": {
           "const": "asset_pool",
@@ -42,7 +41,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../../core/ext.json"
         },
         "kind": {
           "const": "scalar",
@@ -134,7 +133,7 @@
           "type": "boolean"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../../core/ext.json"
         },
         "format_group_id": {
           "description": "The asset_group_id of a repeatable_group in the format's assets array.",
diff --git a/schemas/cache/core/requirements/catalog-requirements.json b/schemas/cache/core/requirements/catalog-requirements.json
index 22d3b247e..bcf8a7254 100644
--- a/schemas/cache/core/requirements/catalog-requirements.json
+++ b/schemas/cache/core/requirements/catalog-requirements.json
@@ -1,17 +1,16 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/catalog-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Format-level declaration of what catalog feeds a creative needs. Formats that render product listings, store locators, or promotional content declare which catalog types must be synced and what fields each catalog must provide. Buyers use this to ensure the right catalogs are synced before submitting creatives.",
   "properties": {
     "catalog_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/catalog-type.json",
+      "$ref": "../../enums/catalog-type.json",
       "description": "The catalog type this requirement applies to"
     },
     "feed_formats": {
       "description": "Accepted feed formats for this catalog type. When specified, the synced catalog must use one of these formats. When omitted, any format is accepted.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/feed-format.json"
+        "$ref": "../../enums/feed-format.json"
       },
       "minItems": 1,
       "type": "array",
@@ -20,7 +19,7 @@
     "field_bindings": {
       "description": "Explicit mappings from format template slots to catalog item fields or typed asset pools. Optional \u2014 creative agents can infer mappings without them, but bindings make the relationship self-describing and enable validation. Covers scalar fields (asset_id \u2192 catalog_field), asset pools (asset_id \u2192 asset_group_id on the catalog item), and repeatable groups that iterate over catalog items.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/requirements/catalog-field-binding.json"
+        "$ref": "catalog-field-binding.json"
       },
       "minItems": 1,
       "type": "array",
@@ -39,7 +38,7 @@
     "offering_asset_constraints": {
       "description": "Per-item creative asset requirements. Declares what asset groups (headlines, images, videos) each catalog item must provide in its assets array, along with count bounds and per-asset technical constraints. Applicable to 'offering' and all vertical catalog types (hotel, flight, job, etc.) whose items carry typed assets.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/requirements/offering-asset-constraint.json"
+        "$ref": "offering-asset-constraint.json"
       },
       "minItems": 1,
       "type": "array",
diff --git a/schemas/cache/core/requirements/css-asset-requirements.json b/schemas/cache/core/requirements/css-asset-requirements.json
index abf9a5733..5d698a5c6 100644
--- a/schemas/cache/core/requirements/css-asset-requirements.json
+++ b/schemas/cache/core/requirements/css-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/css-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for CSS creative assets.",
diff --git a/schemas/cache/core/requirements/daast-asset-requirements.json b/schemas/cache/core/requirements/daast-asset-requirements.json
index 5c5393ade..cd587bc0a 100644
--- a/schemas/cache/core/requirements/daast-asset-requirements.json
+++ b/schemas/cache/core/requirements/daast-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/daast-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for DAAST (Digital Audio Ad Serving Template) creative assets.",
diff --git a/schemas/cache/core/requirements/html-asset-requirements.json b/schemas/cache/core/requirements/html-asset-requirements.json
index a555f5e00..f4ea8e07f 100644
--- a/schemas/cache/core/requirements/html-asset-requirements.json
+++ b/schemas/cache/core/requirements/html-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/html-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for HTML creative assets. These define the execution environment constraints that the HTML must be compatible with.",
diff --git a/schemas/cache/core/requirements/image-asset-requirements.json b/schemas/cache/core/requirements/image-asset-requirements.json
index cde68cf2e..abb967ae3 100644
--- a/schemas/cache/core/requirements/image-asset-requirements.json
+++ b/schemas/cache/core/requirements/image-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/image-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for image creative assets. These define the technical constraints for image files.",
@@ -137,7 +136,7 @@
       "type": "boolean"
     },
     "unit": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/dimension-unit.json",
+      "$ref": "../../enums/dimension-unit.json",
       "description": "Unit of measurement for width/height values. Defaults to 'px' when absent. Print formats use 'inches' or 'cm'."
     }
   },
diff --git a/schemas/cache/core/requirements/javascript-asset-requirements.json b/schemas/cache/core/requirements/javascript-asset-requirements.json
index 147a52ee8..6fdc46376 100644
--- a/schemas/cache/core/requirements/javascript-asset-requirements.json
+++ b/schemas/cache/core/requirements/javascript-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/javascript-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for JavaScript creative assets. These define the execution environment constraints that the JavaScript must be compatible with.",
diff --git a/schemas/cache/core/requirements/markdown-asset-requirements.json b/schemas/cache/core/requirements/markdown-asset-requirements.json
index dce6d07d6..da0820bf7 100644
--- a/schemas/cache/core/requirements/markdown-asset-requirements.json
+++ b/schemas/cache/core/requirements/markdown-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/markdown-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for markdown creative assets.",
diff --git a/schemas/cache/core/requirements/offering-asset-constraint.json b/schemas/cache/core/requirements/offering-asset-constraint.json
index 04c747c3e..e13fb0824 100644
--- a/schemas/cache/core/requirements/offering-asset-constraint.json
+++ b/schemas/cache/core/requirements/offering-asset-constraint.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/offering-asset-constraint.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Declares per-group creative requirements that each offering must satisfy. Allows formats to specify what asset groups (headlines, images, videos) offerings must provide, along with count and per-asset technical constraints.",
@@ -31,15 +30,15 @@
       "type": "string"
     },
     "asset_requirements": {
-      "$ref": "/schemas/3.0.0-rc.3/core/requirements/asset-requirements.json",
+      "$ref": "asset-requirements.json",
       "description": "Technical requirements for each item in this group (e.g., max_length for text, min_width/aspect_ratio for images). Applies uniformly to all items in the group."
     },
     "asset_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/asset-content-type.json",
+      "$ref": "../../enums/asset-content-type.json",
       "description": "The expected content type for this group."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../../core/ext.json"
     },
     "max_count": {
       "description": "Maximum number of items allowed in this group.",
diff --git a/schemas/cache/core/requirements/text-asset-requirements.json b/schemas/cache/core/requirements/text-asset-requirements.json
index 7faac5f3f..9ba91cf43 100644
--- a/schemas/cache/core/requirements/text-asset-requirements.json
+++ b/schemas/cache/core/requirements/text-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/text-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for text creative assets such as headlines, body copy, and CTAs.",
diff --git a/schemas/cache/core/requirements/url-asset-requirements.json b/schemas/cache/core/requirements/url-asset-requirements.json
index 8b088b896..d81b16b66 100644
--- a/schemas/cache/core/requirements/url-asset-requirements.json
+++ b/schemas/cache/core/requirements/url-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/url-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for URL assets such as click-through URLs, tracking pixels, and landing pages.",
diff --git a/schemas/cache/core/requirements/vast-asset-requirements.json b/schemas/cache/core/requirements/vast-asset-requirements.json
index 58c720bc6..c26e6ad57 100644
--- a/schemas/cache/core/requirements/vast-asset-requirements.json
+++ b/schemas/cache/core/requirements/vast-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/vast-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for VAST (Video Ad Serving Template) creative assets.",
diff --git a/schemas/cache/core/requirements/video-asset-requirements.json b/schemas/cache/core/requirements/video-asset-requirements.json
index 8331a386e..0ad763c69 100644
--- a/schemas/cache/core/requirements/video-asset-requirements.json
+++ b/schemas/cache/core/requirements/video-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/video-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for video creative assets. These define the technical constraints for video files.",
diff --git a/schemas/cache/core/requirements/webhook-asset-requirements.json b/schemas/cache/core/requirements/webhook-asset-requirements.json
index 07ce3df6b..310dcaea4 100644
--- a/schemas/cache/core/requirements/webhook-asset-requirements.json
+++ b/schemas/cache/core/requirements/webhook-asset-requirements.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/requirements/webhook-asset-requirements.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Requirements for webhook creative assets.",
diff --git a/schemas/cache/core/response.json b/schemas/cache/core/response.json
index fe9d0d816..1e33e1b7c 100644
--- a/schemas/cache/core/response.json
+++ b/schemas/cache/core/response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Protocol-level response wrapper (MCP/A2A) - contains AdCP task data plus protocol fields",
diff --git a/schemas/cache/core/rights-constraint.json b/schemas/cache/core/rights-constraint.json
index 8850b0bde..b14d26efb 100644
--- a/schemas/cache/core/rights-constraint.json
+++ b/schemas/cache/core/rights-constraint.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/rights-constraint.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Rights metadata attached to a creative manifest. Each entry represents constraints from a single rights holder. A creative may combine multiple rights constraints (e.g., talent likeness + music license). For v1, rights constraints are informational metadata \u2014 the buyer/orchestrator manages creative lifecycle against these terms.",
@@ -30,7 +29,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "impression_cap": {
       "description": "Maximum total impressions allowed for the full validity period (valid_from to valid_until). This is the absolute cap across all creatives using this rights grant, not a per-creative or per-period limit.",
@@ -38,7 +37,7 @@
       "type": "integer"
     },
     "right_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/right-type.json",
+      "$ref": "../enums/right-type.json",
       "description": "Type of rights (talent, music, etc.). Helps identify constraints when a creative combines multiple rights types."
     },
     "rights_agent": {
@@ -67,7 +66,7 @@
     "uses": {
       "description": "Rights uses covered by this constraint",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+        "$ref": "../enums/right-use.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/signal-definition.json b/schemas/cache/core/signal-definition.json
index 1f8196712..e56480973 100644
--- a/schemas/cache/core/signal-definition.json
+++ b/schemas/cache/core/signal-definition.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-definition.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Definition of a signal in a data provider's catalog, published via adagents.json",
@@ -61,7 +60,7 @@
     "restricted_attributes": {
       "description": "Restricted attribute categories this signal touches. Data providers SHOULD declare these so governance agents can structurally match signals against a plan's restricted_attributes without relying on semantic inference from the signal name or description.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/restricted-attribute.json"
+        "$ref": "../enums/restricted-attribute.json"
       },
       "minItems": 1,
       "type": "array"
@@ -75,7 +74,7 @@
       "type": "array"
     },
     "value_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/signal-value-type.json",
+      "$ref": "../enums/signal-value-type.json",
       "description": "The data type of this signal's values"
     }
   },
diff --git a/schemas/cache/core/signal-filters.json b/schemas/cache/core/signal-filters.json
index a11d23e5f..436b610cb 100644
--- a/schemas/cache/core/signal-filters.json
+++ b/schemas/cache/core/signal-filters.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-filters.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Filters to refine signal discovery results",
@@ -7,7 +6,7 @@
     "catalog_types": {
       "description": "Filter by catalog type",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/signal-catalog-type.json"
+        "$ref": "../enums/signal-catalog-type.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/core/signal-id.json b/schemas/cache/core/signal-id.json
index fa7e002e2..15fd62bc1 100644
--- a/schemas/cache/core/signal-id.json
+++ b/schemas/cache/core/signal-id.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-id.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Universal signal identifier. Uses 'source' as discriminator: 'catalog' for signals from a data provider's published catalog (verifiable), 'agent' for agent-native signals (not externally verifiable).",
   "discriminator": {
diff --git a/schemas/cache/core/signal-pricing-option.json b/schemas/cache/core/signal-pricing-option.json
index c041dff77..9c3007380 100644
--- a/schemas/cache/core/signal-pricing-option.json
+++ b/schemas/cache/core/signal-pricing-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-pricing-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "allOf": [
     {
@@ -15,7 +14,7 @@
       "type": "object"
     },
     {
-      "$ref": "/schemas/3.0.0-rc.3/core/signal-pricing.json"
+      "$ref": "signal-pricing.json"
     }
   ],
   "description": "A pricing option offered by a signals agent. Combines pricing_option_id with the signal pricing model fields at the same level \u2014 pass pricing_option_id in report_usage for billing verification.",
diff --git a/schemas/cache/core/signal-pricing.json b/schemas/cache/core/signal-pricing.json
index 97615d734..3afa5fcb7 100644
--- a/schemas/cache/core/signal-pricing.json
+++ b/schemas/cache/core/signal-pricing.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-pricing.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Pricing model for a signal. Discriminated by model: 'cpm' (fixed CPM), 'percent_of_media' (percentage of spend with optional CPM cap), or 'flat_fee' (fixed charge per reporting period, e.g. monthly licensed segments).",
   "oneOf": [
@@ -18,7 +17,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "ext.json"
         },
         "model": {
           "const": "cpm",
@@ -43,7 +42,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "ext.json"
         },
         "max_cpm": {
           "description": "Optional CPM cap. When set, the effective charge is min(percent \u00d7 media_spend_per_mille, max_cpm).",
@@ -84,7 +83,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "ext.json"
         },
         "model": {
           "const": "flat_fee",
diff --git a/schemas/cache/core/signal-targeting.json b/schemas/cache/core/signal-targeting.json
index cd5001681..2d800d23a 100644
--- a/schemas/cache/core/signal-targeting.json
+++ b/schemas/cache/core/signal-targeting.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/signal-targeting.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Targeting constraint for a specific signal. Uses value_type as discriminator to determine the targeting expression format.",
   "discriminator": {
@@ -11,7 +10,7 @@
       "description": "Binary signal targeting - user either matches or doesn't",
       "properties": {
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "value": {
@@ -36,7 +35,7 @@
       "description": "Categorical signal targeting - target users with specific values",
       "properties": {
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "value_type": {
@@ -73,7 +72,7 @@
           "type": "number"
         },
         "signal_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+          "$ref": "signal-id.json",
           "description": "The signal to target"
         },
         "value_type": {
diff --git a/schemas/cache/core/special.json b/schemas/cache/core/special.json
index 7ebc64e0b..557b9c233 100644
--- a/schemas/cache/core/special.json
+++ b/schemas/cache/core/special.json
@@ -1,31 +1,30 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/special.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Special",
   "description": "Event-anchored content tied to a real-world event or occasion. When present on a collection, indicates the collection is a special. When present on an installment, indicates that specific installment is event-anchored (overrides or supplements the collection-level special).",
+  "type": "object",
   "properties": {
+    "name": {
+      "type": "string",
+      "description": "Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')"
+    },
     "category": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/special-category.json",
+      "$ref": "../enums/special-category.json",
       "description": "Category of the event"
     },
-    "ends": {
-      "description": "When the event ends (ISO 8601). Omit for single-day events.",
+    "starts": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the event starts (ISO 8601)"
     },
-    "name": {
-      "description": "Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')",
-      "type": "string"
-    },
-    "starts": {
-      "description": "When the event starts (ISO 8601)",
+    "ends": {
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "When the event ends (ISO 8601). Omit for single-day events."
     }
   },
   "required": [
     "name"
   ],
-  "title": "Special",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/start-timing.json b/schemas/cache/core/start-timing.json
index 693c905c7..13cc88296 100644
--- a/schemas/cache/core/start-timing.json
+++ b/schemas/cache/core/start-timing.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/start-timing.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Campaign start timing: 'asap' or ISO 8601 date-time",
   "oneOf": [
diff --git a/schemas/cache/core/store-item.json b/schemas/cache/core/store-item.json
index 7c199fb7d..683c88ae4 100644
--- a/schemas/cache/core/store-item.json
+++ b/schemas/cache/core/store-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/store-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A physical store or location within a store-type catalog. Carries the location data, catchment areas, and metadata that platforms use for proximity targeting, store locator creatives, and inventory-aware ad serving.",
@@ -173,13 +172,13 @@
     "catchments": {
       "description": "Catchment areas for this store. Each defines a reachable area using travel time (isochrone), simple radius, or pre-computed GeoJSON. Multiple catchments allow different modes \u2014 e.g., 15-minute drive AND 10-minute walk.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catchment.json"
+        "$ref": "catchment.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "hours": {
       "additionalProperties": {
diff --git a/schemas/cache/core/talent.json b/schemas/cache/core/talent.json
index 5cdd31d25..70e29716a 100644
--- a/schemas/cache/core/talent.json
+++ b/schemas/cache/core/talent.json
@@ -1,27 +1,26 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/talent.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Talent",
   "description": "A person associated with a collection or installment, with an optional link to their brand.json identity",
+  "type": "object",
   "properties": {
-    "brand_url": {
-      "description": "URL to this person's brand.json entry. Enables buyer agents to evaluate the talent's brand identity and associations.",
-      "format": "uri",
-      "type": "string"
+    "role": {
+      "$ref": "../enums/talent-role.json",
+      "description": "Role of this person on the collection or installment"
     },
     "name": {
-      "description": "Person's name as credited on the collection",
-      "type": "string"
+      "type": "string",
+      "description": "Person's name as credited on the collection"
     },
-    "role": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/talent-role.json",
-      "description": "Role of this person on the collection or installment"
+    "brand_url": {
+      "type": "string",
+      "format": "uri",
+      "description": "URL to this person's brand.json entry. Enables buyer agents to evaluate the talent's brand identity and associations."
     }
   },
   "required": [
     "role",
     "name"
   ],
-  "title": "Talent",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/core/targeting.json b/schemas/cache/core/targeting.json
index 6a366e6c8..a17346117 100644
--- a/schemas/cache/core/targeting.json
+++ b/schemas/cache/core/targeting.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/targeting.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Optional restriction overlays for media buys. Most targeting should be expressed in the brief and handled by the publisher. These fields are for functional restrictions: geographic (RCT testing, regulatory compliance, proximity targeting), age verification (alcohol, gambling), device platform (app compatibility), language (localization), and keyword targeting (search/retail media).",
@@ -11,7 +10,7 @@
         "accepted_methods": {
           "description": "Accepted verification methods. If omitted, any method the platform supports is acceptable.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/age-verification-method.json"
+            "$ref": "../enums/age-verification-method.json"
           },
           "minItems": 1,
           "type": "array"
@@ -62,7 +61,7 @@
     "daypart_targets": {
       "description": "Restrict delivery to specific time windows. Each entry specifies days of week and an hour range.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/daypart-target.json"
+        "$ref": "daypart-target.json"
       },
       "minItems": 1,
       "type": "array"
@@ -70,7 +69,7 @@
     "device_platform": {
       "description": "Restrict to specific platforms. Use for technical compatibility (app only works on iOS). Values from Sec-CH-UA-Platform standard, extended for CTV.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/device-platform.json"
+        "$ref": "../enums/device-platform.json"
       },
       "minItems": 1,
       "type": "array"
@@ -78,7 +77,7 @@
     "device_type": {
       "description": "Restrict to specific device form factors. Use for campaigns targeting hardware categories rather than operating systems (e.g., mobile-only promotions, CTV campaigns).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/device-type.json"
+        "$ref": "../enums/device-type.json"
       },
       "minItems": 1,
       "type": "array"
@@ -86,13 +85,13 @@
     "device_type_exclude": {
       "description": "Exclude specific device form factors from delivery (e.g., exclude CTV for app-install campaigns).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/device-type.json"
+        "$ref": "../enums/device-type.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "frequency_cap": {
-      "$ref": "/schemas/3.0.0-rc.3/core/frequency-cap.json"
+      "$ref": "frequency-cap.json"
     },
     "geo_countries": {
       "description": "Restrict delivery to specific countries. ISO 3166-1 alpha-2 codes (e.g., 'US', 'GB', 'DE').",
@@ -118,7 +117,7 @@
         "additionalProperties": false,
         "properties": {
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json",
+            "$ref": "../enums/metro-system.json",
             "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
           },
           "values": {
@@ -145,7 +144,7 @@
         "additionalProperties": false,
         "properties": {
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json",
+            "$ref": "../enums/metro-system.json",
             "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')"
           },
           "values": {
@@ -172,7 +171,7 @@
         "additionalProperties": false,
         "properties": {
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json",
+            "$ref": "../enums/postal-system.json",
             "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision."
           },
           "values": {
@@ -199,7 +198,7 @@
         "additionalProperties": false,
         "properties": {
           "system": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json",
+            "$ref": "../enums/postal-system.json",
             "description": "Postal code system (e.g., 'us_zip', 'gb_outward'). System name encodes country and precision."
           },
           "values": {
@@ -290,7 +289,7 @@
         ],
         "properties": {
           "ext": {
-            "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+            "$ref": "ext.json"
           },
           "geometry": {
             "additionalProperties": false,
@@ -336,7 +335,7 @@
             "description": "Simple radius from the point. The platform draws a circle of this distance around the coordinates.",
             "properties": {
               "unit": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/distance-unit.json",
+                "$ref": "../enums/distance-unit.json",
                 "description": "Distance unit."
               },
               "value": {
@@ -352,7 +351,7 @@
             "type": "object"
           },
           "transport_mode": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/transport-mode.json",
+            "$ref": "../enums/transport-mode.json",
             "description": "Transportation mode for isochrone calculation. Required when travel_time is provided."
           },
           "travel_time": {
@@ -476,7 +475,7 @@
       "type": "array"
     },
     "property_list": {
-      "$ref": "/schemas/3.0.0-rc.3/core/property-list-ref.json",
+      "$ref": "property-list-ref.json",
       "description": "Reference to a property list for targeting specific properties within this product. The package runs on the intersection of the product's publisher_properties and this list. Sellers SHOULD return a validation error if the product has property_targeting_allowed: false."
     },
     "store_catchments": {
diff --git a/schemas/cache/core/user-match.json b/schemas/cache/core/user-match.json
index 989b53a30..681811d1d 100644
--- a/schemas/cache/core/user-match.json
+++ b/schemas/cache/core/user-match.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/user-match.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -49,7 +48,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "hashed_email": {
       "description": "SHA-256 hash of lowercase, trimmed email address. Buyer must normalize before hashing: lowercase, trim whitespace.",
@@ -67,7 +66,7 @@
         "additionalProperties": true,
         "properties": {
           "type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/uid-type.json",
+            "$ref": "../enums/uid-type.json",
             "description": "Universal ID type"
           },
           "value": {
diff --git a/schemas/cache/core/vehicle-item.json b/schemas/cache/core/vehicle-item.json
index 0a7e11560..0bee4d6c2 100644
--- a/schemas/cache/core/vehicle-item.json
+++ b/schemas/cache/core/vehicle-item.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/core/vehicle-item.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A vehicle listing within a vehicle-type catalog. Carries the make/model, pricing, and specification data that platforms use for automotive inventory ads. Maps to Meta Automotive Inventory Ads, Microsoft Auto Inventory feeds, Google vehicle ads, and similar formats.",
@@ -61,7 +60,7 @@
     "assets": {
       "description": "Typed creative asset pools for this vehicle. Uses the same OfferingAssetGroup structure as offering-type catalogs. Standard group IDs: 'images_landscape' (exterior hero), 'images_vertical' (9:16 for Stories), 'images_square' (1:1). Enables formats to declare typed image requirements that map unambiguously to the right asset regardless of platform.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/offering-asset-group.json"
+        "$ref": "offering-asset-group.json"
       },
       "minItems": 1,
       "type": "array"
@@ -90,7 +89,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "ext.json"
     },
     "exterior_color": {
       "description": "Exterior color.",
@@ -172,7 +171,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/core/price.json",
+      "$ref": "price.json",
       "description": "Vehicle price."
     },
     "tags": {
diff --git a/schemas/cache/creative/asset-types/index.json b/schemas/cache/creative/asset-types/index.json
index 3304cf314..71700c073 100644
--- a/schemas/cache/creative/asset-types/index.json
+++ b/schemas/cache/creative/asset-types/index.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/asset-types/index.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "adcp_version": "3.0.0-rc.3",
   "architecture": {
diff --git a/schemas/cache/creative/creative-feature-result.json b/schemas/cache/creative/creative-feature-result.json
index 12e9d2e25..d94fa1be5 100644
--- a/schemas/cache/creative/creative-feature-result.json
+++ b/schemas/cache/creative/creative-feature-result.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/creative-feature-result.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A single feature evaluation result for a creative. Uses the same value structure as property-feature-value (value, confidence, expires_at, etc.).",
@@ -21,7 +20,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "feature_id": {
       "description": "The feature that was evaluated (e.g., 'auto_redirect', 'brand_consistency'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:eu_ai_act_article_50'). Unprefixed feature IDs are agent-defined.",
diff --git a/schemas/cache/creative/get-creative-delivery-request.json b/schemas/cache/creative/get-creative-delivery-request.json
index 57dfb4a34..828292978 100644
--- a/schemas/cache/creative/get-creative-delivery-request.json
+++ b/schemas/cache/creative/get-creative-delivery-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/get-creative-delivery-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -17,11 +16,11 @@
   "description": "Request parameters for retrieving creative delivery data including variant-level metrics from a creative agent. At least one scoping filter (media_buy_ids or creative_ids) is required.",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account for routing and scoping. Limits results to creatives within this account."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_ids": {
       "description": "Filter to specific creatives by ID. If omitted, returns delivery for all creatives matching the other filters.",
@@ -37,7 +36,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "max_variants": {
       "description": "Maximum number of variants to return per creative. When omitted, the agent returns all variants. Use this to limit response size for generative creatives that may produce large numbers of variants.",
@@ -53,7 +52,7 @@
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json",
+      "$ref": "../core/pagination-request.json",
       "description": "Pagination parameters for the creatives array in the response. Uses cursor-based pagination consistent with other list operations."
     },
     "start_date": {
diff --git a/schemas/cache/creative/get-creative-delivery-response.json b/schemas/cache/creative/get-creative-delivery-response.json
index 0aaa0cbce..b9d6e8065 100644
--- a/schemas/cache/creative/get-creative-delivery-response.json
+++ b/schemas/cache/creative/get-creative-delivery-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/get-creative-delivery-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_creative_delivery task. Returns creative delivery data with variant-level breakdowns including manifests and metrics.",
@@ -9,7 +8,7 @@
       "type": "string"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creatives": {
       "description": "Creative delivery data with variant breakdowns",
@@ -21,7 +20,7 @@
             "type": "string"
           },
           "format_id": {
-            "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+            "$ref": "../core/format-id.json",
             "description": "Format of this creative"
           },
           "media_buy_id": {
@@ -29,7 +28,7 @@
             "type": "string"
           },
           "totals": {
-            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json",
+            "$ref": "../core/delivery-metrics.json",
             "description": "Aggregate delivery metrics across all variants of this creative"
           },
           "variant_count": {
@@ -40,7 +39,7 @@
           "variants": {
             "description": "Variant-level delivery breakdown. Each variant includes the rendered manifest and delivery metrics. For standard creatives, contains a single variant. For asset group optimization, one per combination. For generative creative, one per generated execution. Empty when a creative has no variants yet.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/creative-variant.json"
+              "$ref": "../core/creative-variant.json"
             },
             "type": "array"
           }
@@ -61,12 +60,12 @@
     "errors": {
       "description": "Task-specific errors and warnings",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "media_buy_id": {
       "description": "Publisher's media buy identifier. Present when the request was scoped to a single media buy.",
diff --git a/schemas/cache/creative/get-creative-features-request.json b/schemas/cache/creative/get-creative-features-request.json
index 3cc16492b..4525373c6 100644
--- a/schemas/cache/creative/get-creative-features-request.json
+++ b/schemas/cache/creative/get-creative-features-request.json
@@ -1,22 +1,21 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/get-creative-features-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request payload for the get_creative_features task. Submits a creative manifest for evaluation by a governance agent, which analyzes the creative and returns scored feature values (brand safety, content categorization, quality metrics, etc.).",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account for billing this evaluation. Required when the governance agent charges per evaluation."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_manifest": {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+      "$ref": "../core/creative-manifest.json",
       "description": "The creative manifest to evaluate. Contains format_id and assets."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "feature_ids": {
       "description": "Optional filter to specific features. If omitted, returns all available features.",
diff --git a/schemas/cache/creative/get-creative-features-response.json b/schemas/cache/creative/get-creative-features-response.json
index 07960a875..56f9e8b27 100644
--- a/schemas/cache/creative/get-creative-features-response.json
+++ b/schemas/cache/creative/get-creative-features-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/get-creative-features-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for the get_creative_features task. Returns scored feature values from the governance agent's evaluation of the submitted creative manifest.",
   "oneOf": [
@@ -7,7 +6,7 @@
       "description": "Success response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "detail_url": {
           "description": "URL to the vendor's full assessment report. The vendor controls what information is disclosed and access control.",
@@ -15,12 +14,12 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "results": {
           "description": "Feature values for the evaluated creative",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/creative/creative-feature-result.json"
+            "$ref": "creative-feature-result.json"
           },
           "type": "array"
         }
@@ -34,16 +33,16 @@
       "description": "Error response",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/creative/list-creative-formats-request.json b/schemas/cache/creative/list-creative-formats-request.json
index ec582a89d..de4b89d28 100644
--- a/schemas/cache/creative/list-creative-formats-request.json
+++ b/schemas/cache/creative/list-creative-formats-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/list-creative-formats-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for discovering creative formats provided by this creative agent",
@@ -22,12 +21,12 @@
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "disclosure_persistence": {
       "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json"
+        "$ref": "../enums/disclosure-persistence.json"
       },
       "minItems": 1,
       "type": "array",
@@ -36,19 +35,19 @@
     "disclosure_positions": {
       "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json"
+        "$ref": "../enums/disclosure-position.json"
       },
       "minItems": 1,
       "type": "array",
       "uniqueItems": true
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "format_ids": {
       "description": "Return only these specific format IDs",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -56,7 +55,7 @@
     "input_format_ids": {
       "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -88,13 +87,13 @@
     "output_format_ids": {
       "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "type": {
       "description": "Filter by format type (technical categories with distinct requirements)",
@@ -107,7 +106,7 @@
       "type": "string"
     },
     "wcag_level": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/wcag-level.json",
+      "$ref": "../enums/wcag-level.json",
       "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
     }
   },
diff --git a/schemas/cache/creative/list-creative-formats-response.json b/schemas/cache/creative/list-creative-formats-response.json
index 5c0cc9239..687f19605 100644
--- a/schemas/cache/creative/list-creative-formats-response.json
+++ b/schemas/cache/creative/list-creative-formats-response.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/list-creative-formats-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for list_creative_formats task from creative agent - returns full format definitions",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_agents": {
       "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
@@ -23,7 +22,7 @@
           "capabilities": {
             "description": "Capabilities this creative agent provides",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/creative-agent-capability.json"
+              "$ref": "../enums/creative-agent-capability.json"
             },
             "type": "array"
           }
@@ -38,22 +37,22 @@
     "errors": {
       "description": "Task-specific errors and warnings",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "formats": {
       "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format.json"
+        "$ref": "../core/format.json"
       },
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     }
   },
   "required": [
diff --git a/schemas/cache/creative/list-creatives-request.json b/schemas/cache/creative/list-creatives-request.json
index b578a4d96..7ba74822e 100644
--- a/schemas/cache/creative/list-creatives-request.json
+++ b/schemas/cache/creative/list-creatives-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/list-creatives-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for querying creative assets from a creative library with filtering, sorting, and pagination. Implemented by any agent that hosts a creative library \u2014 creative agents (ad servers, creative platforms) and sales agents that manage creatives.",
@@ -59,10 +58,10 @@
   ],
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "fields": {
       "description": "Specific fields to include in response (omit for all fields). The 'concept' value returns both concept_id and concept_name.",
@@ -87,7 +86,7 @@
       "type": "array"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-filters.json"
+      "$ref": "../core/creative-filters.json"
     },
     "include_assignments": {
       "default": true,
@@ -110,19 +109,19 @@
       "type": "boolean"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "sort": {
       "additionalProperties": true,
       "description": "Sorting parameters",
       "properties": {
         "direction": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/sort-direction.json",
+          "$ref": "../enums/sort-direction.json",
           "default": "desc",
           "description": "Sort direction"
         },
         "field": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/creative-sort-field.json",
+          "$ref": "../enums/creative-sort-field.json",
           "default": "created_date",
           "description": "Field to sort by"
         }
diff --git a/schemas/cache/creative/list-creatives-response.json b/schemas/cache/creative/list-creatives-response.json
index 6c91026df..9bd44fae3 100644
--- a/schemas/cache/creative/list-creatives-response.json
+++ b/schemas/cache/creative/list-creatives-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/list-creatives-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response from creative library query with filtered results, metadata, and optional enriched data",
@@ -110,7 +109,7 @@
   ],
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creatives": {
       "description": "Array of creative assets matching the query",
@@ -118,7 +117,7 @@
         "additionalProperties": true,
         "properties": {
           "account": {
-            "$ref": "/schemas/3.0.0-rc.3/core/account.json",
+            "$ref": "../core/account.json",
             "description": "Account that owns this creative"
           },
           "assets": {
@@ -128,46 +127,46 @@
               "^[a-z0-9_]+$": {
                 "anyOf": [
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/image-asset.json"
+                    "$ref": "../core/assets/image-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/video-asset.json"
+                    "$ref": "../core/assets/video-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/audio-asset.json"
+                    "$ref": "../core/assets/audio-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/vast-asset.json"
+                    "$ref": "../core/assets/vast-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/text-asset.json"
+                    "$ref": "../core/assets/text-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/url-asset.json"
+                    "$ref": "../core/assets/url-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/html-asset.json"
+                    "$ref": "../core/assets/html-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/javascript-asset.json"
+                    "$ref": "../core/assets/javascript-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/webhook-asset.json"
+                    "$ref": "../core/assets/webhook-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/css-asset.json"
+                    "$ref": "../core/assets/css-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/daast-asset.json"
+                    "$ref": "../core/assets/daast-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/markdown-asset.json"
+                    "$ref": "../core/assets/markdown-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/brief-asset.json"
+                    "$ref": "../core/assets/brief-asset.json"
                   },
                   {
-                    "$ref": "/schemas/3.0.0-rc.3/core/assets/catalog-asset.json"
+                    "$ref": "../core/assets/catalog-asset.json"
                   }
                 ]
               }
@@ -230,13 +229,13 @@
             "type": "string"
           },
           "format_id": {
-            "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+            "$ref": "../core/format-id.json",
             "description": "Format identifier specifying which format this creative conforms to"
           },
           "items": {
             "description": "Items for multi-asset formats like carousels and native ads (included when include_items=true)",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/creative-item.json"
+              "$ref": "../core/creative-item.json"
             },
             "type": "array"
           },
@@ -286,7 +285,7 @@
             "type": "string"
           },
           "status": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/creative-status.json",
+            "$ref": "../enums/creative-status.json",
             "description": "Current approval status of the creative"
           },
           "tags": {
@@ -304,7 +303,7 @@
           "variables": {
             "description": "Dynamic content variables (DCO slots) for this creative. Included when include_variables=true.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/creative-variable.json"
+              "$ref": "../core/creative-variable.json"
             },
             "type": "array"
           }
@@ -324,12 +323,12 @@
     "errors": {
       "description": "Task-specific errors (e.g., invalid filters, account not found)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "format_summary": {
       "additionalProperties": true,
@@ -344,7 +343,7 @@
       "type": "object"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     },
     "query_summary": {
       "additionalProperties": true,
@@ -366,7 +365,7 @@
           "description": "Sort order that was applied",
           "properties": {
             "direction": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-direction.json"
+              "$ref": "../enums/sort-direction.json"
             },
             "field": {
               "type": "string"
diff --git a/schemas/cache/creative/preview-creative-request.json b/schemas/cache/creative/preview-creative-request.json
index ddf3b8d4c..8e5d62b95 100644
--- a/schemas/cache/creative/preview-creative-request.json
+++ b/schemas/cache/creative/preview-creative-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/preview-creative-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Request to generate previews of one or more creative manifests. Accepts either a single creative request or an array of requests for batch processing.",
   "oneOf": [
@@ -8,17 +7,17 @@
       "description": "Single creative preview request",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_manifest": {
-          "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+          "$ref": "../core/creative-manifest.json",
           "description": "Complete creative manifest with all required assets for the format."
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "format_id": {
-          "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+          "$ref": "../core/format-id.json",
           "description": "Format identifier for rendering the preview. Optional \u2014 defaults to creative_manifest.format_id if omitted."
         },
         "inputs": {
@@ -56,12 +55,12 @@
           "type": "integer"
         },
         "output_format": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
+          "$ref": "../enums/preview-output-format.json",
           "default": "url",
           "description": "Output format for previews. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding). Default: 'url' for backward compatibility."
         },
         "quality": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
+          "$ref": "../enums/creative-quality.json",
           "description": "Render quality for the preview. 'draft' produces fast, lower-fidelity renderings for rapid iteration. 'production' produces full-quality renderings for final review. If omitted, the creative agent uses its own default."
         },
         "request_type": {
@@ -85,18 +84,18 @@
       "description": "Batch preview request for multiple creatives (5-10x faster than individual calls)",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "output_format": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
+          "$ref": "../enums/preview-output-format.json",
           "default": "url",
           "description": "Default output format for all requests in this batch. Individual requests can override this. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
         },
         "quality": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
+          "$ref": "../enums/creative-quality.json",
           "description": "Default render quality for all requests in this batch. Individual requests can override this. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings."
         },
         "request_type": {
@@ -110,11 +109,11 @@
             "additionalProperties": true,
             "properties": {
               "creative_manifest": {
-                "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+                "$ref": "../core/creative-manifest.json",
                 "description": "Complete creative manifest with all required assets."
               },
               "format_id": {
-                "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+                "$ref": "../core/format-id.json",
                 "description": "Format identifier for rendering the preview. Optional \u2014 defaults to creative_manifest.format_id if omitted."
               },
               "inputs": {
@@ -152,12 +151,12 @@
                 "type": "integer"
               },
               "output_format": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
+                "$ref": "../enums/preview-output-format.json",
                 "default": "url",
                 "description": "Output format for this preview. 'url' returns preview_url, 'html' returns preview_html."
               },
               "quality": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
+                "$ref": "../enums/creative-quality.json",
                 "description": "Render quality for this preview. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Overrides any batch-level default."
               },
               "template_id": {
@@ -186,17 +185,17 @@
       "description": "Variant preview request - retrieve a post-flight preview of a specific creative variant that was served during delivery",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_id": {
           "description": "Creative identifier for context",
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "output_format": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
+          "$ref": "../enums/preview-output-format.json",
           "default": "url",
           "description": "Output format for the preview. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML for direct embedding)."
         },
diff --git a/schemas/cache/creative/preview-creative-response.json b/schemas/cache/creative/preview-creative-response.json
index 8d6346a26..33301b56f 100644
--- a/schemas/cache/creative/preview-creative-response.json
+++ b/schemas/cache/creative/preview-creative-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/preview-creative-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response containing preview links for one or more creatives. Format matches the request: single preview response for single requests, batch results for batch requests.",
   "oneOf": [
@@ -8,7 +7,7 @@
       "description": "Single preview response - each preview URL returns an HTML page that can be embedded in an iframe",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "expires_at": {
           "description": "ISO 8601 timestamp when preview links expire",
@@ -16,7 +15,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "interactive_url": {
           "description": "Optional URL to an interactive testing page that shows all preview variants with controls to switch between them, modify macro values, and test different scenarios.",
@@ -58,7 +57,7 @@
               "renders": {
                 "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats (video + banner), multi-placement formats, and adaptive formats render as multiple pieces.",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/creative/preview-render.json"
+                  "$ref": "preview-render.json"
                 },
                 "minItems": 1,
                 "type": "array"
@@ -93,10 +92,10 @@
       "description": "Batch preview response - contains results for multiple creative requests",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "response_type": {
           "const": "batch",
@@ -142,7 +141,7 @@
               "errors": {
                 "description": "Errors for failed requests",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+                  "$ref": "../core/error.json"
                 },
                 "minItems": 1,
                 "type": "array"
@@ -188,7 +187,7 @@
                         },
                         "renders": {
                           "items": {
-                            "$ref": "/schemas/3.0.0-rc.3/creative/preview-render.json"
+                            "$ref": "preview-render.json"
                           },
                           "minItems": 1,
                           "type": "array"
@@ -238,7 +237,7 @@
       "description": "Variant preview response - shows what a specific creative variant looked like when served during delivery",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_id": {
           "description": "Creative identifier this variant belongs to",
@@ -250,10 +249,10 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "manifest": {
-          "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+          "$ref": "../core/creative-manifest.json",
           "description": "The rendered creative manifest for this variant \u2014 the actual output that was served, not the input assets"
         },
         "previews": {
@@ -267,7 +266,7 @@
               "renders": {
                 "description": "Rendered pieces for this variant",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/creative/preview-render.json"
+                  "$ref": "preview-render.json"
                 },
                 "minItems": 1,
                 "type": "array"
diff --git a/schemas/cache/creative/preview-render.json b/schemas/cache/creative/preview-render.json
index 933af78a5..509aaf913 100644
--- a/schemas/cache/creative/preview-render.json
+++ b/schemas/cache/creative/preview-render.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/preview-render.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A single rendered piece of a creative preview with discriminated output format",
   "oneOf": [
diff --git a/schemas/cache/creative/sync-creatives-async-response-input-required.json b/schemas/cache/creative/sync-creatives-async-response-input-required.json
index 3fc5092d1..24cbebfb9 100644
--- a/schemas/cache/creative/sync-creatives-async-response-input-required.json
+++ b/schemas/cache/creative/sync-creatives-async-response-input-required.json
@@ -1,25 +1,24 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Creatives - Input Required",
   "description": "Payload when sync_creatives task is paused waiting for buyer clarification or approval.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
     "reason": {
-      "description": "Reason code indicating why buyer input is needed",
+      "type": "string",
       "enum": [
         "APPROVAL_REQUIRED",
         "ASSET_CONFIRMATION",
         "FORMAT_CLARIFICATION"
       ],
-      "type": "string"
+      "description": "Reason code indicating why buyer input is needed"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Creatives - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/sync-creatives-async-response-submitted.json b/schemas/cache/creative/sync-creatives-async-response-submitted.json
index 77a7ab362..fdb60e94a 100644
--- a/schemas/cache/creative/sync-creatives-async-response-submitted.json
+++ b/schemas/cache/creative/sync-creatives-async-response-submitted.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Creatives - Submitted",
   "description": "Payload acknowledging sync_creatives task is queued for processing.",
+  "type": "object",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Creatives - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/sync-creatives-async-response-working.json b/schemas/cache/creative/sync-creatives-async-response-working.json
index 036acf001..a5400dd4a 100644
--- a/schemas/cache/creative/sync-creatives-async-response-working.json
+++ b/schemas/cache/creative/sync-creatives-async-response-working.json
@@ -1,46 +1,45 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/sync-creatives-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Creatives - Working",
   "description": "Progress payload for active sync_creatives task.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "percentage": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 100,
+      "description": "Completion percentage (0-100)"
+    },
+    "current_step": {
+      "type": "string",
+      "description": "Current step or phase of the operation"
+    },
+    "total_steps": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Total number of steps in the operation"
+    },
+    "step_number": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Current step number"
     },
     "creatives_processed": {
-      "description": "Number of creatives processed so far",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Number of creatives processed so far"
     },
     "creatives_total": {
-      "description": "Total number of creatives to process",
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Total number of creatives to process"
     },
-    "current_step": {
-      "description": "Current step or phase of the operation",
-      "type": "string"
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
-    "percentage": {
-      "description": "Completion percentage (0-100)",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
-    },
-    "step_number": {
-      "description": "Current step number",
-      "minimum": 1,
-      "type": "integer"
-    },
-    "total_steps": {
-      "description": "Total number of steps in the operation",
-      "minimum": 1,
-      "type": "integer"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Creatives - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/creative/sync-creatives-request.json b/schemas/cache/creative/sync-creatives-request.json
index 0a1dc7eee..5fc06a925 100644
--- a/schemas/cache/creative/sync-creatives-request.json
+++ b/schemas/cache/creative/sync-creatives-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/sync-creatives-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for syncing creative assets with upsert semantics - supports bulk operations, scoped updates, and assignment management",
@@ -123,7 +122,7 @@
   ],
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account that owns these creatives."
     },
     "assignments": {
@@ -164,7 +163,7 @@
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_ids": {
       "description": "Optional filter to limit sync scope to specific creative IDs. When provided, only these creatives will be created/updated. Other creatives in the library are unaffected. Useful for partial updates and error recovery.",
@@ -178,7 +177,7 @@
     "creatives": {
       "description": "Array of creative assets to sync (create or update)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-asset.json"
+        "$ref": "../core/creative-asset.json"
       },
       "maxItems": 100,
       "minItems": 1,
@@ -195,7 +194,7 @@
       "type": "boolean"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated idempotency key for safe retries. If a sync fails without a response, resending with the same idempotency_key guarantees at-most-once execution. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -204,11 +203,11 @@
       "type": "string"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Optional webhook configuration for async sync notifications. The agent will send a webhook when sync completes if the operation takes longer than immediate response time (typically for large bulk operations or manual approval/HITL)."
     },
     "validation_mode": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/validation-mode.json",
+      "$ref": "../enums/validation-mode.json",
       "default": "strict",
       "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid creatives and reports errors."
     }
diff --git a/schemas/cache/creative/sync-creatives-response.json b/schemas/cache/creative/sync-creatives-response.json
index c2b482862..36ec5cc0f 100644
--- a/schemas/cache/creative/sync-creatives-response.json
+++ b/schemas/cache/creative/sync-creatives-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/creative/sync-creatives-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from creative sync operation. Returns either per-creative results (best-effort processing) OR operation-level errors (complete failure). This enforces atomic semantics at the operation level while allowing per-item failures within successful operations.",
   "oneOf": [
@@ -13,7 +12,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creatives": {
           "description": "Results for each creative processed. Items with action='failed' indicate per-item validation/processing failures, not operation-level failures.",
@@ -21,11 +20,11 @@
             "additionalProperties": true,
             "properties": {
               "account": {
-                "$ref": "/schemas/3.0.0-rc.3/core/account.json",
+                "$ref": "../core/account.json",
                 "description": "Account that owns this creative"
               },
               "action": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/creative-action.json",
+                "$ref": "../enums/creative-action.json",
                 "description": "Action taken for this creative"
               },
               "assigned_to": {
@@ -99,7 +98,7 @@
           "type": "boolean"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -136,18 +135,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors that prevented processing any creatives (e.g., authentication failure, service unavailable, invalid request format)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/enums/account-status.json b/schemas/cache/enums/account-status.json
index 8b3f447d0..16cfa682d 100644
--- a/schemas/cache/enums/account-status.json
+++ b/schemas/cache/enums/account-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/account-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Advertiser account status in the account lifecycle",
   "enum": [
diff --git a/schemas/cache/enums/action-source.json b/schemas/cache/enums/action-source.json
index 3c6096f43..5fda6e014 100644
--- a/schemas/cache/enums/action-source.json
+++ b/schemas/cache/enums/action-source.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/action-source.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Where the conversion event originated",
   "enum": [
diff --git a/schemas/cache/enums/adcp-domain.json b/schemas/cache/enums/adcp-domain.json
index e752f7db8..87f75aa93 100644
--- a/schemas/cache/enums/adcp-domain.json
+++ b/schemas/cache/enums/adcp-domain.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/adcp-domain.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "AdCP protocol domains for task categorization",
   "enum": [
diff --git a/schemas/cache/enums/adjustment-kind.json b/schemas/cache/enums/adjustment-kind.json
index b6486d42f..3fb68d75f 100644
--- a/schemas/cache/enums/adjustment-kind.json
+++ b/schemas/cache/enums/adjustment-kind.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Categorizes how a price adjustment affects the transaction",
   "enum": [
diff --git a/schemas/cache/enums/advertiser-industry.json b/schemas/cache/enums/advertiser-industry.json
index edcaaee6c..872204036 100644
--- a/schemas/cache/enums/advertiser-industry.json
+++ b/schemas/cache/enums/advertiser-industry.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/advertiser-industry.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standardized advertiser industry classification. Top-level categories classify the advertiser's primary business. Dot-notation subcategories (e.g., 'media_entertainment.podcasts') provide platform-specific precision where needed. Sellers map these to platform-native codes (Spotify ADV categories, LinkedIn industry IDs, IAB Content Taxonomy, etc.). Sellers MUST accept unknown values gracefully \u2014 treat unrecognized values as the parent category (strip the subcategory) or as uncategorized. This ensures forward compatibility as the taxonomy evolves.",
   "enum": [
diff --git a/schemas/cache/enums/age-verification-method.json b/schemas/cache/enums/age-verification-method.json
index 7a3a8e9a6..48a06e768 100644
--- a/schemas/cache/enums/age-verification-method.json
+++ b/schemas/cache/enums/age-verification-method.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/age-verification-method.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Methods for verifying user age for compliance. Does not include 'inferred' as it is not accepted for regulatory compliance.",
   "enum": [
diff --git a/schemas/cache/enums/assessment-status.json b/schemas/cache/enums/assessment-status.json
index 2be05605b..c96f1b27b 100644
--- a/schemas/cache/enums/assessment-status.json
+++ b/schemas/cache/enums/assessment-status.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/assessment-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Assessment Status",
   "description": "Standardized quality level for health and readiness assessments. Comparable across sellers \u2014 buyer agents should use this for cross-seller decisions.",
+  "type": "string",
   "enum": [
     "insufficient",
     "minimum",
@@ -9,11 +10,9 @@
     "excellent"
   ],
   "enumDescriptions": {
-    "excellent": "Exceeds quality thresholds across all dimensions",
-    "good": "Meets quality thresholds for most optimization goals",
     "insufficient": "Setup incomplete or event quality too low \u2014 optimization cannot run",
-    "minimum": "Functional but data quality limits optimization effectiveness"
-  },
-  "title": "Assessment Status",
-  "type": "string"
+    "minimum": "Functional but data quality limits optimization effectiveness",
+    "good": "Meets quality thresholds for most optimization goals",
+    "excellent": "Exceeds quality thresholds across all dimensions"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/asset-content-type.json b/schemas/cache/enums/asset-content-type.json
index fb8f18a32..31efb1454 100644
--- a/schemas/cache/enums/asset-content-type.json
+++ b/schemas/cache/enums/asset-content-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/asset-content-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of content that can be used as creative assets. Describes what KIND of content an asset contains (image, video, code, etc.), not where it displays.",
   "enum": [
diff --git a/schemas/cache/enums/attribution-model.json b/schemas/cache/enums/attribution-model.json
index 09d3a0c5f..b8d01696f 100644
--- a/schemas/cache/enums/attribution-model.json
+++ b/schemas/cache/enums/attribution-model.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/attribution-model.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Attribution model used for conversion measurement",
   "enum": [
diff --git a/schemas/cache/enums/audience-source.json b/schemas/cache/enums/audience-source.json
index 07701fbd0..cb8c608f5 100644
--- a/schemas/cache/enums/audience-source.json
+++ b/schemas/cache/enums/audience-source.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/audience-source.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Origin of an audience segment in delivery reporting breakdowns. Only 'synced' audiences are directly targetable via the targeting overlay; other sources are informational.",
   "enum": [
diff --git a/schemas/cache/enums/auth-scheme.json b/schemas/cache/enums/auth-scheme.json
index e9a3a1396..c3ee2bf94 100644
--- a/schemas/cache/enums/auth-scheme.json
+++ b/schemas/cache/enums/auth-scheme.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/auth-scheme.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Authentication schemes for push notification endpoints",
   "enum": [
diff --git a/schemas/cache/enums/available-metric.json b/schemas/cache/enums/available-metric.json
index 7a9754632..1cb359a46 100644
--- a/schemas/cache/enums/available-metric.json
+++ b/schemas/cache/enums/available-metric.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/available-metric.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard delivery and performance metrics available for reporting",
   "enum": [
diff --git a/schemas/cache/enums/budget-authority-level.json b/schemas/cache/enums/budget-authority-level.json
index e5289d8bc..0598aac4e 100644
--- a/schemas/cache/enums/budget-authority-level.json
+++ b/schemas/cache/enums/budget-authority-level.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/budget-authority-level.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The level of autonomy an agent has over budget decisions within a campaign plan.",
   "enum": [
diff --git a/schemas/cache/enums/canceled-by.json b/schemas/cache/enums/canceled-by.json
index efca1a07e..e0f7418fa 100644
--- a/schemas/cache/enums/canceled-by.json
+++ b/schemas/cache/enums/canceled-by.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/canceled-by.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Identifies which party initiated a cancellation.",
   "enum": [
diff --git a/schemas/cache/enums/catalog-action.json b/schemas/cache/enums/catalog-action.json
index adc459aa8..4b5896715 100644
--- a/schemas/cache/enums/catalog-action.json
+++ b/schemas/cache/enums/catalog-action.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/catalog-action.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Action taken on a catalog during sync operation",
   "enum": [
diff --git a/schemas/cache/enums/catalog-item-status.json b/schemas/cache/enums/catalog-item-status.json
index a48a5399d..cc7d2ca49 100644
--- a/schemas/cache/enums/catalog-item-status.json
+++ b/schemas/cache/enums/catalog-item-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/catalog-item-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Approval status of an individual item within a synced catalog. Platforms review catalog items and may approve, reject, or flag them for issues (similar to Google Merchant Center product review).",
   "enum": [
diff --git a/schemas/cache/enums/catalog-type.json b/schemas/cache/enums/catalog-type.json
index e793b5116..7811984fa 100644
--- a/schemas/cache/enums/catalog-type.json
+++ b/schemas/cache/enums/catalog-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/catalog-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The type of catalog feed. Determines the item schema and how the platform resolves catalog items. Multiple catalog types can be synced to the same account and referenced together in creatives.",
   "enum": [
diff --git a/schemas/cache/enums/channels.json b/schemas/cache/enums/channels.json
index eeab04307..307dfb06a 100644
--- a/schemas/cache/enums/channels.json
+++ b/schemas/cache/enums/channels.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/channels.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.",
   "enum": [
diff --git a/schemas/cache/enums/co-branding-requirement.json b/schemas/cache/enums/co-branding-requirement.json
index b0dc2a95f..99734f360 100644
--- a/schemas/cache/enums/co-branding-requirement.json
+++ b/schemas/cache/enums/co-branding-requirement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/co-branding-requirement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Co-branding policy for creatives (retailer/publisher brand inclusion)",
   "enum": [
diff --git a/schemas/cache/enums/collection-cadence.json b/schemas/cache/enums/collection-cadence.json
index 65e8600de..af64cf464 100644
--- a/schemas/cache/enums/collection-cadence.json
+++ b/schemas/cache/enums/collection-cadence.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/collection-cadence.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection Cadence",
   "description": "How frequently a collection releases new installments",
+  "type": "string",
   "enum": [
     "daily",
     "weekly",
@@ -12,12 +13,10 @@
   ],
   "enumDescriptions": {
     "daily": "New installments every day or weekday",
-    "event": "One-time or occasional special events",
-    "irregular": "No predictable schedule",
+    "weekly": "New installments weekly",
     "monthly": "New installments monthly (magazines, newsletters)",
     "seasonal": "Installments released in defined seasons with breaks between",
-    "weekly": "New installments weekly"
-  },
-  "title": "Collection Cadence",
-  "type": "string"
+    "event": "One-time or occasional special events",
+    "irregular": "No predictable schedule"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/collection-relationship.json b/schemas/cache/enums/collection-relationship.json
index 1396a0d37..d5131d902 100644
--- a/schemas/cache/enums/collection-relationship.json
+++ b/schemas/cache/enums/collection-relationship.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/collection-relationship.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection Relationship",
   "description": "How two collections are related. References are scoped to the same get_products response. Symmetric types (companion, crossover) do not require both collections to declare the relationship.",
+  "type": "string",
   "enum": [
     "spinoff",
     "companion",
@@ -10,12 +11,10 @@
     "crossover"
   ],
   "enumDescriptions": {
+    "spinoff": "A collection derived from the referenced collection (e.g., an after-collection or character spinoff)",
     "companion": "A companion collection (behind-the-scenes, reaction, or supplementary content)",
-    "crossover": "Shows that share installments, guests, or story arcs",
-    "prequel": "A predecessor to the referenced collection",
     "sequel": "A continuation of the referenced collection",
-    "spinoff": "A collection derived from the referenced collection (e.g., an after-collection or character spinoff)"
-  },
-  "title": "Collection Relationship",
-  "type": "string"
+    "prequel": "A predecessor to the referenced collection",
+    "crossover": "Shows that share installments, guests, or story arcs"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/collection-status.json b/schemas/cache/enums/collection-status.json
index 0e5110d70..204e6377d 100644
--- a/schemas/cache/enums/collection-status.json
+++ b/schemas/cache/enums/collection-status.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/collection-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Collection Status",
   "description": "Lifecycle status of a collection",
+  "type": "string",
   "enum": [
     "active",
     "hiatus",
@@ -10,10 +11,8 @@
   ],
   "enumDescriptions": {
     "active": "Currently producing and releasing installments",
-    "ended": "No longer producing new installments",
     "hiatus": "Temporarily paused, expected to resume",
+    "ended": "No longer producing new installments",
     "upcoming": "Announced but not yet released"
-  },
-  "title": "Collection Status",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/consent-basis.json b/schemas/cache/enums/consent-basis.json
index ed8337e00..158cb68da 100644
--- a/schemas/cache/enums/consent-basis.json
+++ b/schemas/cache/enums/consent-basis.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/consent-basis.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Common GDPR lawful bases relevant to advertising. Covers the Article 6(1) bases used in programmatic advertising contexts.",
   "enum": [
diff --git a/schemas/cache/enums/content-id-type.json b/schemas/cache/enums/content-id-type.json
index dd1c76b1a..be230131b 100644
--- a/schemas/cache/enums/content-id-type.json
+++ b/schemas/cache/enums/content-id-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/content-id-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Identifier type used in content_ids on conversion events to match back to catalog items. Omit when the identifier type is custom or not listed here.",
   "enum": [
diff --git a/schemas/cache/enums/content-rating-system.json b/schemas/cache/enums/content-rating-system.json
index 410a4e2e5..b9483f336 100644
--- a/schemas/cache/enums/content-rating-system.json
+++ b/schemas/cache/enums/content-rating-system.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/content-rating-system.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Content Rating System",
   "description": "Rating systems for content advisory classifications",
+  "type": "string",
   "enum": [
     "tv_parental",
     "mpaa",
@@ -10,18 +11,22 @@
     "bbfc",
     "fsk",
     "acb",
+    "chvrs",
+    "csa",
+    "pegi",
     "custom"
   ],
   "enumDescriptions": {
-    "acb": "Australian Classification Board (G, PG, M, MA15+, R18+)",
-    "bbfc": "British Board of Film Classification (U, PG, 12A, 12, 15, 18, R18)",
-    "custom": "Publisher-defined rating system with free-form values",
-    "esrb": "Entertainment Software Rating Board (E, E10+, T, M, AO)",
-    "fsk": "Freiwillige Selbstkontrolle der Filmwirtschaft (0, 6, 12, 16, 18)",
+    "tv_parental": "US TV Parental Guidelines (TV-Y, TV-Y7, TV-G, TV-PG, TV-14, TV-MA)",
     "mpaa": "Motion Picture Association film ratings (G, PG, PG-13, R, NC-17)",
     "podcast": "Podcast content advisories (clean, explicit)",
-    "tv_parental": "US TV Parental Guidelines (TV-Y, TV-Y7, TV-G, TV-PG, TV-14, TV-MA)"
-  },
-  "title": "Content Rating System",
-  "type": "string"
+    "esrb": "Entertainment Software Rating Board (E, E10+, T, M, AO) \u2014 US/Canada",
+    "bbfc": "British Board of Film Classification (U, PG, 12A, 12, 15, 18, R18)",
+    "fsk": "Freiwillige Selbstkontrolle der Filmwirtschaft (0, 6, 12, 16, 18) \u2014 Germany",
+    "acb": "Australian Classification Board (G, PG, M, MA15+, R18+)",
+    "chvrs": "Canadian Home Video Rating System (G, PG, 14A, 18A, R, A)",
+    "csa": "Conseil superieur de l'audiovisuel / Arcom (-10, -12, -16, -18) \u2014 France",
+    "pegi": "Pan European Game Information (3, 7, 12, 16, 18) \u2014 pan-European gaming",
+    "custom": "Publisher-defined rating system with free-form values"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/creative-action.json b/schemas/cache/enums/creative-action.json
index dd8610ebd..35d37cae9 100644
--- a/schemas/cache/enums/creative-action.json
+++ b/schemas/cache/enums/creative-action.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-action.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Action taken on a creative during sync operation",
   "enum": [
diff --git a/schemas/cache/enums/creative-agent-capability.json b/schemas/cache/enums/creative-agent-capability.json
index a288a6d4e..1e9246ea7 100644
--- a/schemas/cache/enums/creative-agent-capability.json
+++ b/schemas/cache/enums/creative-agent-capability.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-agent-capability.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Capabilities supported by creative agents for format handling",
   "enum": [
diff --git a/schemas/cache/enums/creative-approval-status.json b/schemas/cache/enums/creative-approval-status.json
index 69b70ef18..47a029c09 100644
--- a/schemas/cache/enums/creative-approval-status.json
+++ b/schemas/cache/enums/creative-approval-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-approval-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Approval state of a creative on a specific package",
   "enum": [
diff --git a/schemas/cache/enums/creative-quality.json b/schemas/cache/enums/creative-quality.json
index 07913ff45..6db4279e7 100644
--- a/schemas/cache/enums/creative-quality.json
+++ b/schemas/cache/enums/creative-quality.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Quality tier for creative generation, controlling the fidelity and cost tradeoff",
   "enum": [
diff --git a/schemas/cache/enums/creative-sort-field.json b/schemas/cache/enums/creative-sort-field.json
index b39dd657d..2b45516ee 100644
--- a/schemas/cache/enums/creative-sort-field.json
+++ b/schemas/cache/enums/creative-sort-field.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-sort-field.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Fields available for sorting creative library listings",
   "enum": [
diff --git a/schemas/cache/enums/creative-status.json b/schemas/cache/enums/creative-status.json
index a5b088999..b739356f2 100644
--- a/schemas/cache/enums/creative-status.json
+++ b/schemas/cache/enums/creative-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/creative-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Lifecycle status of a creative asset in a creative library. See the Creative Protocol specification for transition rules.",
   "enum": [
diff --git a/schemas/cache/enums/daast-tracking-event.json b/schemas/cache/enums/daast-tracking-event.json
index f0d8e27bd..0edd36128 100644
--- a/schemas/cache/enums/daast-tracking-event.json
+++ b/schemas/cache/enums/daast-tracking-event.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/daast-tracking-event.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard DAAST tracking events for audio ad playback and interaction",
   "enum": [
diff --git a/schemas/cache/enums/daast-version.json b/schemas/cache/enums/daast-version.json
index a7595308a..7d9a0afbb 100644
--- a/schemas/cache/enums/daast-version.json
+++ b/schemas/cache/enums/daast-version.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/daast-version.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Supported DAAST (Digital Audio Ad Serving Template) specification versions",
   "enum": [
diff --git a/schemas/cache/enums/day-of-week.json b/schemas/cache/enums/day-of-week.json
index 6fe7a5372..63ae66fd1 100644
--- a/schemas/cache/enums/day-of-week.json
+++ b/schemas/cache/enums/day-of-week.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/day-of-week.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Days of the week for daypart targeting",
   "enum": [
diff --git a/schemas/cache/enums/delegation-authority.json b/schemas/cache/enums/delegation-authority.json
index 4f1922875..4154304e3 100644
--- a/schemas/cache/enums/delegation-authority.json
+++ b/schemas/cache/enums/delegation-authority.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/delegation-authority.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Authority level granted to a delegated agent operating against a campaign plan.",
   "enum": [
diff --git a/schemas/cache/enums/delivery-type.json b/schemas/cache/enums/delivery-type.json
index ac4861beb..dd814099b 100644
--- a/schemas/cache/enums/delivery-type.json
+++ b/schemas/cache/enums/delivery-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/delivery-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Type of inventory delivery",
   "enum": [
diff --git a/schemas/cache/enums/demographic-system.json b/schemas/cache/enums/demographic-system.json
index c36a40573..d59bc379d 100644
--- a/schemas/cache/enums/demographic-system.json
+++ b/schemas/cache/enums/demographic-system.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/demographic-system.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Audience measurement systems for demographic notation in GRP forecasts and pricing",
   "enum": [
diff --git a/schemas/cache/enums/derivative-type.json b/schemas/cache/enums/derivative-type.json
index bdd66223e..db21b7d58 100644
--- a/schemas/cache/enums/derivative-type.json
+++ b/schemas/cache/enums/derivative-type.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/derivative-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Derivative Type",
   "description": "What kind of derivative content an installment represents relative to its source installment. The source installment_id must reference an installment within the same response.",
+  "type": "string",
   "enum": [
     "clip",
     "highlight",
@@ -10,12 +11,10 @@
     "bonus"
   ],
   "enumDescriptions": {
-    "bonus": "Supplementary content (behind-the-scenes, extended interviews, deleted segments)",
     "clip": "Short excerpt from the source installment",
     "highlight": "Editorially curated best-of segment from the source installment",
     "recap": "Summary of the source installment's content",
-    "trailer": "Promotional content for the source installment"
-  },
-  "title": "Derivative Type",
-  "type": "string"
+    "trailer": "Promotional content for the source installment",
+    "bonus": "Supplementary content (behind-the-scenes, extended interviews, deleted segments)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/device-platform.json b/schemas/cache/enums/device-platform.json
index 6c0e84acb..c94ec658b 100644
--- a/schemas/cache/enums/device-platform.json
+++ b/schemas/cache/enums/device-platform.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/device-platform.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV.",
   "enum": [
diff --git a/schemas/cache/enums/device-type.json b/schemas/cache/enums/device-type.json
index 4df931580..659d91b44 100644
--- a/schemas/cache/enums/device-type.json
+++ b/schemas/cache/enums/device-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/device-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Device form factor categories for targeting and reporting. Complements device-platform (operating system) with hardware classification. OpenRTB mapping: 1 (Mobile/Tablet General) \u2192 mobile, 2 (PC) \u2192 desktop, 4 (Phone) \u2192 mobile, 5 (Tablet) \u2192 tablet, 6 (Connected Device) \u2192 ctv, 7 (Set Top Box) \u2192 ctv. DOOH inventory uses dooh.",
   "enum": [
diff --git a/schemas/cache/enums/digital-source-type.json b/schemas/cache/enums/digital-source-type.json
index 4d83c9396..b0ce3a7e9 100644
--- a/schemas/cache/enums/digital-source-type.json
+++ b/schemas/cache/enums/digital-source-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/digital-source-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Classification of AI involvement in content creation, aligned with IPTC digitalsourcetype vocabulary. Used in provenance metadata to declare how a creative asset, artifact, or individual asset was produced.",
   "enum": [
diff --git a/schemas/cache/enums/dimension-unit.json b/schemas/cache/enums/dimension-unit.json
index e4612c9d5..6f04841bb 100644
--- a/schemas/cache/enums/dimension-unit.json
+++ b/schemas/cache/enums/dimension-unit.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/dimension-unit.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Units of measurement for creative format dimensions",
   "enum": [
diff --git a/schemas/cache/enums/disclosure-persistence.json b/schemas/cache/enums/disclosure-persistence.json
index 1d2ac8245..c7497d966 100644
--- a/schemas/cache/enums/disclosure-persistence.json
+++ b/schemas/cache/enums/disclosure-persistence.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "How long a disclosure must persist during content playback or display. Different jurisdictions and regulations require different persistence behaviors for AI-generated content labels. When multiple sources specify persistence for the same jurisdiction (e.g., brief and provenance), the most restrictive mode applies: continuous > initial > flexible.",
   "enum": [
diff --git a/schemas/cache/enums/disclosure-position.json b/schemas/cache/enums/disclosure-position.json
index 63b3b3547..60517955d 100644
--- a/schemas/cache/enums/disclosure-position.json
+++ b/schemas/cache/enums/disclosure-position.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/disclosure-position.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Where a required disclosure should appear within a creative. Used by creative briefs to specify disclosure placement and by formats to declare which positions they can render.",
   "enum": [
diff --git a/schemas/cache/enums/distance-unit.json b/schemas/cache/enums/distance-unit.json
index 2b5efd09b..7153ba897 100644
--- a/schemas/cache/enums/distance-unit.json
+++ b/schemas/cache/enums/distance-unit.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/distance-unit.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Units of distance measurement for radius-based catchment areas.",
   "enum": [
diff --git a/schemas/cache/enums/distribution-identifier-type.json b/schemas/cache/enums/distribution-identifier-type.json
index 61d5878d0..61e6de548 100644
--- a/schemas/cache/enums/distribution-identifier-type.json
+++ b/schemas/cache/enums/distribution-identifier-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/distribution-identifier-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Platform-specific identifier types for collection distribution. Maps a collection to its presence on specific platforms, enabling cross-seller matching.",
   "enum": [
diff --git a/schemas/cache/enums/error-code.json b/schemas/cache/enums/error-code.json
index 050b64a05..1ac88ffd1 100644
--- a/schemas/cache/enums/error-code.json
+++ b/schemas/cache/enums/error-code.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/error-code.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard error code vocabulary for AdCP. Codes are machine-readable so agents can apply autonomous recovery strategies based on the recovery classification. Sellers MAY return codes not listed here for platform-specific errors \u2014 the error.json code field accepts any string. Agents MUST handle unknown codes by falling back to the recovery classification.",
   "enum": [
diff --git a/schemas/cache/enums/escalation-severity.json b/schemas/cache/enums/escalation-severity.json
index 1663862d6..c82149ffd 100644
--- a/schemas/cache/enums/escalation-severity.json
+++ b/schemas/cache/enums/escalation-severity.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/escalation-severity.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The severity level of a governance escalation.",
   "enum": [
diff --git a/schemas/cache/enums/event-type.json b/schemas/cache/enums/event-type.json
index 2835c0786..02c05d302 100644
--- a/schemas/cache/enums/event-type.json
+++ b/schemas/cache/enums/event-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/event-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard marketing event types for event logging, aligned with IAB ECAPI",
   "enum": [
diff --git a/schemas/cache/enums/exclusivity.json b/schemas/cache/enums/exclusivity.json
index beece1930..13c90f4c3 100644
--- a/schemas/cache/enums/exclusivity.json
+++ b/schemas/cache/enums/exclusivity.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/exclusivity.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Whether a product offers exclusive access to its inventory",
   "enum": [
diff --git a/schemas/cache/enums/feed-format.json b/schemas/cache/enums/feed-format.json
index 17d5323ec..401ac4ae1 100644
--- a/schemas/cache/enums/feed-format.json
+++ b/schemas/cache/enums/feed-format.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/feed-format.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Catalog feed formats. Determines how the platform parses items from an external feed URL.",
   "enum": [
diff --git a/schemas/cache/enums/feedback-source.json b/schemas/cache/enums/feedback-source.json
index e89dd16a2..5fcff84c2 100644
--- a/schemas/cache/enums/feedback-source.json
+++ b/schemas/cache/enums/feedback-source.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/feedback-source.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Source of performance feedback data",
   "enum": [
diff --git a/schemas/cache/enums/forecast-method.json b/schemas/cache/enums/forecast-method.json
index 6a2237221..534825c79 100644
--- a/schemas/cache/enums/forecast-method.json
+++ b/schemas/cache/enums/forecast-method.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/forecast-method.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Method used to produce a delivery forecast",
   "enum": [
diff --git a/schemas/cache/enums/forecast-range-unit.json b/schemas/cache/enums/forecast-range-unit.json
index 699db8414..8e094c01e 100644
--- a/schemas/cache/enums/forecast-range-unit.json
+++ b/schemas/cache/enums/forecast-range-unit.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/forecast-range-unit.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Describes how to interpret the points array in a DeliveryForecast \u2014 what axis the curve represents",
   "enum": [
diff --git a/schemas/cache/enums/forecastable-metric.json b/schemas/cache/enums/forecastable-metric.json
index 7dec1fb57..79a747f2c 100644
--- a/schemas/cache/enums/forecastable-metric.json
+++ b/schemas/cache/enums/forecastable-metric.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/forecastable-metric.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard delivery and engagement metric names for forecasts. For outcome/conversion forecasts (purchases, leads, app installs, etc.), use event-type enum values as metric keys instead. The ForecastPoint metrics map accepts any string key, so both forecastable-metric and event-type values can be used together.",
   "enum": [
diff --git a/schemas/cache/enums/format-id-parameter.json b/schemas/cache/enums/format-id-parameter.json
index eca308202..842987db7 100644
--- a/schemas/cache/enums/format-id-parameter.json
+++ b/schemas/cache/enums/format-id-parameter.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/format-id-parameter.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of parameters that template formats accept in format_id objects to create parameterized format identifiers",
   "enum": [
diff --git a/schemas/cache/enums/frequency-cap-scope.json b/schemas/cache/enums/frequency-cap-scope.json
index 7a1952c4b..4a4d0ccaf 100644
--- a/schemas/cache/enums/frequency-cap-scope.json
+++ b/schemas/cache/enums/frequency-cap-scope.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/frequency-cap-scope.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Scope for frequency cap application",
   "enum": [
diff --git a/schemas/cache/enums/genre-taxonomy.json b/schemas/cache/enums/genre-taxonomy.json
new file mode 100644
index 000000000..0f5c0e242
--- /dev/null
+++ b/schemas/cache/enums/genre-taxonomy.json
@@ -0,0 +1,28 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Genre Taxonomy",
+  "description": "Taxonomy systems for genre classification. When declared, genre values should be valid identifiers within the specified taxonomy.",
+  "type": "string",
+  "enum": [
+    "iab_content_3.0",
+    "iab_content_2.2",
+    "gracenote",
+    "eidr",
+    "apple_genres",
+    "google_genres",
+    "roku",
+    "amazon_genres",
+    "custom"
+  ],
+  "enumDescriptions": {
+    "iab_content_3.0": "IAB Tech Lab Content Taxonomy 3.0 \u2014 industry standard for digital content classification. Maps to OpenRTB cattax=6.",
+    "iab_content_2.2": "IAB Tech Lab Content Taxonomy 2.2 \u2014 previous version, still widely used. Maps to OpenRTB cattax=2.",
+    "gracenote": "Gracenote genre classification \u2014 entertainment metadata standard for TV, film, and music. Supports multi-level genre hierarchies; hierarchy-aware matching is the seller's responsibility.",
+    "eidr": "EIDR genre classification \u2014 ISO 10528 for audiovisual content identification",
+    "apple_genres": "Apple App Store / Apple TV genre taxonomy",
+    "google_genres": "Google Play / Google TV genre taxonomy",
+    "roku": "Roku Channel Store / Roku TV genre taxonomy",
+    "amazon_genres": "Amazon Fire TV / Freevee genre taxonomy",
+    "custom": "Publisher-defined genre taxonomy with free-form values. Buyer and seller must negotiate the vocabulary out of band."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/geo-level.json b/schemas/cache/enums/geo-level.json
index bc19db9c7..95be4cb91 100644
--- a/schemas/cache/enums/geo-level.json
+++ b/schemas/cache/enums/geo-level.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/geo-level.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Geographic targeting granularity levels. Some levels (metro, postal_area) require a system specification.",
   "enum": [
diff --git a/schemas/cache/enums/governance-domain.json b/schemas/cache/enums/governance-domain.json
index 9a7cdbd1e..f21d54c09 100644
--- a/schemas/cache/enums/governance-domain.json
+++ b/schemas/cache/enums/governance-domain.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/governance-domain.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Governance sub-domains that a registry policy applies to. Used to indicate which types of governance agents can evaluate this policy.",
   "enum": [
diff --git a/schemas/cache/enums/governance-mode.json b/schemas/cache/enums/governance-mode.json
index fc3b61fcd..a836623a7 100644
--- a/schemas/cache/enums/governance-mode.json
+++ b/schemas/cache/enums/governance-mode.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/governance-mode.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Operating mode for a governance agent. Controls whether findings block execution.",
   "enum": [
diff --git a/schemas/cache/enums/governance-phase.json b/schemas/cache/enums/governance-phase.json
index e55f3b65f..92342a4f6 100644
--- a/schemas/cache/enums/governance-phase.json
+++ b/schemas/cache/enums/governance-phase.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/governance-phase.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The phase of the media buy lifecycle that triggered the governance check.",
   "enum": [
diff --git a/schemas/cache/enums/history-entry-type.json b/schemas/cache/enums/history-entry-type.json
index 1fbd272b7..1bf5b6263 100644
--- a/schemas/cache/enums/history-entry-type.json
+++ b/schemas/cache/enums/history-entry-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/history-entry-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Type of entry in task execution history",
   "enum": [
diff --git a/schemas/cache/enums/http-method.json b/schemas/cache/enums/http-method.json
index de2ab62e7..2990717f2 100644
--- a/schemas/cache/enums/http-method.json
+++ b/schemas/cache/enums/http-method.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/http-method.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "HTTP methods supported for webhook requests",
   "enum": [
diff --git a/schemas/cache/enums/identifier-types.json b/schemas/cache/enums/identifier-types.json
index f00ce485d..7662e4e5f 100644
--- a/schemas/cache/enums/identifier-types.json
+++ b/schemas/cache/enums/identifier-types.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/identifier-types.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Valid identifier types for property identification across different media types",
   "enum": [
diff --git a/schemas/cache/enums/installment-status.json b/schemas/cache/enums/installment-status.json
index dbafc803e..73ad401a6 100644
--- a/schemas/cache/enums/installment-status.json
+++ b/schemas/cache/enums/installment-status.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/installment-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Installment Status",
   "description": "Lifecycle status of an installment",
+  "type": "string",
   "enum": [
     "scheduled",
     "tentative",
@@ -12,14 +13,12 @@
     "published"
   ],
   "enumDescriptions": {
-    "aired": "Already broadcast (live/linear content)",
-    "cancelled": "Will not happen",
+    "scheduled": "Confirmed, will happen as planned",
+    "tentative": "May not happen (e.g., playoff Game 7 depends on Game 6)",
     "live": "Currently airing or streaming right now",
     "postponed": "Was scheduled but delayed to a future date",
-    "published": "Already released (on-demand content)",
-    "scheduled": "Confirmed, will happen as planned",
-    "tentative": "May not happen (e.g., playoff Game 7 depends on Game 6)"
-  },
-  "title": "Installment Status",
-  "type": "string"
+    "cancelled": "Will not happen",
+    "aired": "Already broadcast (live/linear content)",
+    "published": "Already released (on-demand content)"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/javascript-module-type.json b/schemas/cache/enums/javascript-module-type.json
index 49ef7e376..979549571 100644
--- a/schemas/cache/enums/javascript-module-type.json
+++ b/schemas/cache/enums/javascript-module-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/javascript-module-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "JavaScript module format types for creative assets",
   "enum": [
diff --git a/schemas/cache/enums/landing-page-requirement.json b/schemas/cache/enums/landing-page-requirement.json
index efea74a2b..703e18675 100644
--- a/schemas/cache/enums/landing-page-requirement.json
+++ b/schemas/cache/enums/landing-page-requirement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/landing-page-requirement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Landing page policy for creative click-through destinations",
   "enum": [
diff --git a/schemas/cache/enums/makegood-remedy.json b/schemas/cache/enums/makegood-remedy.json
new file mode 100644
index 000000000..928dd15ff
--- /dev/null
+++ b/schemas/cache/enums/makegood-remedy.json
@@ -0,0 +1,16 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Makegood Remedy",
+  "description": "Remedy types available when a performance standard or billing measurement threshold is breached.",
+  "type": "string",
+  "enum": [
+    "additional_delivery",
+    "credit",
+    "invoice_adjustment"
+  ],
+  "enumDescriptions": {
+    "additional_delivery": "Seller extends or adds impressions to compensate for the shortfall. Delivery is like-for-like on the same campaign or a subsequent campaign within the same account.",
+    "credit": "Seller issues a credit toward future media buys on the same account.",
+    "invoice_adjustment": "Seller reduces the invoice for the current media buy to reflect actual delivered value."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/markdown-flavor.json b/schemas/cache/enums/markdown-flavor.json
index 177c511b0..e79f05198 100644
--- a/schemas/cache/enums/markdown-flavor.json
+++ b/schemas/cache/enums/markdown-flavor.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/markdown-flavor.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Markdown specification flavors supported for text assets",
   "enum": [
diff --git a/schemas/cache/enums/match-id-type.json b/schemas/cache/enums/match-id-type.json
index ad938ed48..5da1d07f7 100644
--- a/schemas/cache/enums/match-id-type.json
+++ b/schemas/cache/enums/match-id-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/match-id-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Identifier types for audience match reporting. Combines hashed PII types (from audience-member.json field names) with universal ID types (from uid-type.json).",
   "enum": [
diff --git a/schemas/cache/enums/media-buy-status.json b/schemas/cache/enums/media-buy-status.json
index facdef6ac..0ec5548c6 100644
--- a/schemas/cache/enums/media-buy-status.json
+++ b/schemas/cache/enums/media-buy-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/media-buy-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Status of a media buy.",
   "enum": [
diff --git a/schemas/cache/enums/metric-type.json b/schemas/cache/enums/metric-type.json
index a18935002..e9fa1c318 100644
--- a/schemas/cache/enums/metric-type.json
+++ b/schemas/cache/enums/metric-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/metric-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Performance metric types for feedback and optimization",
   "enum": [
diff --git a/schemas/cache/enums/metro-system.json b/schemas/cache/enums/metro-system.json
index a693de083..a36595e1f 100644
--- a/schemas/cache/enums/metro-system.json
+++ b/schemas/cache/enums/metro-system.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/metro-system.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Metro area classification systems for geographic targeting",
   "enum": [
diff --git a/schemas/cache/enums/notification-type.json b/schemas/cache/enums/notification-type.json
index 9348345b6..b2e61d82c 100644
--- a/schemas/cache/enums/notification-type.json
+++ b/schemas/cache/enums/notification-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/notification-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Type of delivery notification for media buy reporting",
   "enum": [
diff --git a/schemas/cache/enums/outcome-type.json b/schemas/cache/enums/outcome-type.json
index 97711ce60..4b24ecbf5 100644
--- a/schemas/cache/enums/outcome-type.json
+++ b/schemas/cache/enums/outcome-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/outcome-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The type of outcome reported to a campaign governance agent after a seller interaction.",
   "enum": [
diff --git a/schemas/cache/enums/pacing.json b/schemas/cache/enums/pacing.json
index 474cd1ac7..63ccfd272 100644
--- a/schemas/cache/enums/pacing.json
+++ b/schemas/cache/enums/pacing.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/pacing.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Budget pacing strategy",
   "enum": [
diff --git a/schemas/cache/enums/performance-standard-metric.json b/schemas/cache/enums/performance-standard-metric.json
new file mode 100644
index 000000000..eff067102
--- /dev/null
+++ b/schemas/cache/enums/performance-standard-metric.json
@@ -0,0 +1,20 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Performance Standard Metric",
+  "description": "Performance metrics that support rate thresholds on media buys. Each metric specifies whether its threshold is a floor (must exceed) or ceiling (must not exceed).",
+  "type": "string",
+  "enum": [
+    "viewability",
+    "ivt",
+    "completion_rate",
+    "brand_safety",
+    "attention_score"
+  ],
+  "enumDescriptions": {
+    "viewability": "Viewable impression rate (floor \u2014 must exceed threshold). Requires viewability_standard. Denominator: measurable_impressions.",
+    "ivt": "Invalid Traffic rate (ceiling \u2014 must not exceed threshold). Denominator: total_impressions.",
+    "completion_rate": "Video or audio completion rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+    "brand_safety": "Brand-safe impression rate (floor \u2014 must exceed threshold). Denominator: total_impressions.",
+    "attention_score": "Attention score rate (floor \u2014 must exceed threshold). Denominator: measurable_impressions."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/policy-category.json b/schemas/cache/enums/policy-category.json
index 2f4aed99c..610828402 100644
--- a/schemas/cache/enums/policy-category.json
+++ b/schemas/cache/enums/policy-category.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/policy-category.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The nature of the obligation a policy represents.",
   "enum": [
diff --git a/schemas/cache/enums/policy-enforcement.json b/schemas/cache/enums/policy-enforcement.json
index 881b95ff3..02800f78e 100644
--- a/schemas/cache/enums/policy-enforcement.json
+++ b/schemas/cache/enums/policy-enforcement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/policy-enforcement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "How governance agents treat violations of a policy. Uses RFC 2119 keywords.",
   "enum": [
diff --git a/schemas/cache/enums/postal-system.json b/schemas/cache/enums/postal-system.json
index 677dfee4a..31e516afb 100644
--- a/schemas/cache/enums/postal-system.json
+++ b/schemas/cache/enums/postal-system.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/postal-system.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Postal code systems for geographic targeting. System names encode country and precision level.",
   "enum": [
diff --git a/schemas/cache/enums/preview-output-format.json b/schemas/cache/enums/preview-output-format.json
index 825030124..b38453646 100644
--- a/schemas/cache/enums/preview-output-format.json
+++ b/schemas/cache/enums/preview-output-format.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Output format for creative previews",
   "enum": [
diff --git a/schemas/cache/enums/pricing-model.json b/schemas/cache/enums/pricing-model.json
index d3bf13937..ab95b7f07 100644
--- a/schemas/cache/enums/pricing-model.json
+++ b/schemas/cache/enums/pricing-model.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/pricing-model.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Supported pricing models for advertising products",
   "enum": [
diff --git a/schemas/cache/enums/production-quality.json b/schemas/cache/enums/production-quality.json
index 6ed6580d3..dc7eb7325 100644
--- a/schemas/cache/enums/production-quality.json
+++ b/schemas/cache/enums/production-quality.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/production-quality.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Production quality tier for collection content. Maps to OpenRTB content.prodq: professional=1, prosumer=2, ugc=3. Seller-declared \u2014 no external validation.",
   "enum": [
diff --git a/schemas/cache/enums/property-type.json b/schemas/cache/enums/property-type.json
index bebfd9dd0..3cbd25dcb 100644
--- a/schemas/cache/enums/property-type.json
+++ b/schemas/cache/enums/property-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/property-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of addressable advertising properties with verifiable ownership. Property types are a subset of media channels - they represent inventory surfaces that can be validated via adagents.json.",
   "enum": [
diff --git a/schemas/cache/enums/proposal-status.json b/schemas/cache/enums/proposal-status.json
index bb01f4354..0b9ad40e1 100644
--- a/schemas/cache/enums/proposal-status.json
+++ b/schemas/cache/enums/proposal-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/proposal-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Lifecycle status of a proposal. Absent means the proposal is ready to buy (backward compatible with pre-v3.1 proposals). 'draft' indicates indicative pricing that must be finalized before purchase. 'committed' indicates firm pricing with inventory reserved until expires_at.",
   "enum": [
diff --git a/schemas/cache/enums/publisher-identifier-types.json b/schemas/cache/enums/publisher-identifier-types.json
index c04d0b98b..073a55752 100644
--- a/schemas/cache/enums/publisher-identifier-types.json
+++ b/schemas/cache/enums/publisher-identifier-types.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/publisher-identifier-types.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Valid identifier types for publisher/legal entity identification",
   "enum": [
diff --git a/schemas/cache/enums/reach-unit.json b/schemas/cache/enums/reach-unit.json
index dd18ecf4f..2e3a0b5e4 100644
--- a/schemas/cache/enums/reach-unit.json
+++ b/schemas/cache/enums/reach-unit.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/reach-unit.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Unit of measurement for reach and audience size metrics. Different channels and measurement providers count reach in fundamentally different units, making cross-channel comparison impossible without declaring the unit.",
   "enum": [
diff --git a/schemas/cache/enums/reporting-frequency.json b/schemas/cache/enums/reporting-frequency.json
index 7846943b0..4c2f6ce07 100644
--- a/schemas/cache/enums/reporting-frequency.json
+++ b/schemas/cache/enums/reporting-frequency.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/reporting-frequency.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Available frequencies for delivery reports and metrics updates",
   "enum": [
diff --git a/schemas/cache/enums/response-type.json b/schemas/cache/enums/response-type.json
index f2c494ce6..3e7ea332e 100644
--- a/schemas/cache/enums/response-type.json
+++ b/schemas/cache/enums/response-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/response-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "What the publisher wants back from a TMP context match. Determines the richness level of the buyer's offer response.",
   "enum": [
diff --git a/schemas/cache/enums/restricted-attribute.json b/schemas/cache/enums/restricted-attribute.json
index dad339861..91c39fe55 100644
--- a/schemas/cache/enums/restricted-attribute.json
+++ b/schemas/cache/enums/restricted-attribute.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/restricted-attribute.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Personal data categories that may be restricted from use in audience targeting. Based on GDPR Article 9 special categories of personal data, which are also referenced by EU DSA Article 26 for advertising restrictions. Used in two places: (1) on campaign plans via restricted_attributes to declare which categories are prohibited, and (2) on signal-definition.json via restricted_attributes to declare which categories a signal touches. Governance agents match plan restrictions against signal declarations for structural validation.",
   "enum": [
diff --git a/schemas/cache/enums/right-type.json b/schemas/cache/enums/right-type.json
index eea4f4a6b..35c9db312 100644
--- a/schemas/cache/enums/right-type.json
+++ b/schemas/cache/enums/right-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/right-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Categories of intellectual property rights that can be licensed through the brand protocol.",
   "enum": [
diff --git a/schemas/cache/enums/right-use.json b/schemas/cache/enums/right-use.json
index 32c3ffb35..87b3fa865 100644
--- a/schemas/cache/enums/right-use.json
+++ b/schemas/cache/enums/right-use.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/right-use.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of rights usage that can be licensed through the brand protocol. Aligned with DDEX UseType direction for interoperability with music and media rights systems.",
   "enum": [
diff --git a/schemas/cache/enums/si-session-status.json b/schemas/cache/enums/si-session-status.json
index 87e24b9ad..3aafd30e0 100644
--- a/schemas/cache/enums/si-session-status.json
+++ b/schemas/cache/enums/si-session-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/si-session-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "State of a Sponsored Intelligence session between a host and a brand agent",
   "enum": [
diff --git a/schemas/cache/enums/signal-catalog-type.json b/schemas/cache/enums/signal-catalog-type.json
index ef1283394..40bf707cf 100644
--- a/schemas/cache/enums/signal-catalog-type.json
+++ b/schemas/cache/enums/signal-catalog-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/signal-catalog-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of signal catalogs available for audience targeting",
   "enum": [
diff --git a/schemas/cache/enums/signal-source.json b/schemas/cache/enums/signal-source.json
index 075e94650..14f81947f 100644
--- a/schemas/cache/enums/signal-source.json
+++ b/schemas/cache/enums/signal-source.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/signal-source.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Source type for signal identifiers. Determines how the signal is referenced and whether authorization can be externally verified.",
   "enum": [
diff --git a/schemas/cache/enums/signal-value-type.json b/schemas/cache/enums/signal-value-type.json
index fea5fdb76..b81f863b0 100644
--- a/schemas/cache/enums/signal-value-type.json
+++ b/schemas/cache/enums/signal-value-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/signal-value-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "The data type of a signal's values, determining how it can be targeted",
   "enum": [
diff --git a/schemas/cache/enums/sort-direction.json b/schemas/cache/enums/sort-direction.json
index ded1884c8..7423f519b 100644
--- a/schemas/cache/enums/sort-direction.json
+++ b/schemas/cache/enums/sort-direction.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/sort-direction.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Sort direction for list queries",
   "enum": [
diff --git a/schemas/cache/enums/sort-metric.json b/schemas/cache/enums/sort-metric.json
index ed0f35153..6fa73f34b 100644
--- a/schemas/cache/enums/sort-metric.json
+++ b/schemas/cache/enums/sort-metric.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Numeric delivery metrics available for sorting breakdown rows. Subset of delivery-metrics fields that are flat numeric values (excludes nested objects like quartile_data, dooh_metrics, viewability, by_event_type, by_action_source).",
   "enum": [
diff --git a/schemas/cache/enums/special-category.json b/schemas/cache/enums/special-category.json
index 1a877d4c9..d313e1e5d 100644
--- a/schemas/cache/enums/special-category.json
+++ b/schemas/cache/enums/special-category.json
@@ -1,7 +1,8 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/special-category.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Special Category",
   "description": "Category of special or event-anchored content",
+  "type": "string",
   "enum": [
     "awards",
     "championship",
@@ -29,7 +30,5 @@
     "product_launch": "Product reveal or launch event",
     "reunion": "Reunion or anniversary special",
     "tribute": "Tribute or memorial special"
-  },
-  "title": "Special Category",
-  "type": "string"
+  }
 }
\ No newline at end of file
diff --git a/schemas/cache/enums/talent-role.json b/schemas/cache/enums/talent-role.json
index 928769b66..9c79f401b 100644
--- a/schemas/cache/enums/talent-role.json
+++ b/schemas/cache/enums/talent-role.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/talent-role.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Role of a person associated with a collection or installment",
   "enum": [
diff --git a/schemas/cache/enums/task-status.json b/schemas/cache/enums/task-status.json
index 7a23803d7..75b7043b1 100644
--- a/schemas/cache/enums/task-status.json
+++ b/schemas/cache/enums/task-status.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/task-status.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standardized task status values based on A2A TaskState enum. Indicates the current state of any AdCP operation.",
   "enum": [
diff --git a/schemas/cache/enums/task-type.json b/schemas/cache/enums/task-type.json
index 51e37f3aa..636596dfd 100644
--- a/schemas/cache/enums/task-type.json
+++ b/schemas/cache/enums/task-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/task-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Valid AdCP task types across all domains. These represent the complete set of operations that can be tracked via the task management system.",
   "enum": [
diff --git a/schemas/cache/enums/transport-mode.json b/schemas/cache/enums/transport-mode.json
index 3f20cf80e..da95a7728 100644
--- a/schemas/cache/enums/transport-mode.json
+++ b/schemas/cache/enums/transport-mode.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/transport-mode.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Transportation modes for isochrone-based catchment area calculations. Determines how travel time translates to geographic reach.",
   "enum": [
diff --git a/schemas/cache/enums/uid-type.json b/schemas/cache/enums/uid-type.json
index 276bb2b33..8305d7cb7 100644
--- a/schemas/cache/enums/uid-type.json
+++ b/schemas/cache/enums/uid-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/uid-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Type of user identifier. Used in audience sync, event logging, and TMP identity match requests to tell the receiver which identity graph to resolve against.",
   "enum": [
diff --git a/schemas/cache/enums/universal-macro.json b/schemas/cache/enums/universal-macro.json
index 1314cbded..a28242d43 100644
--- a/schemas/cache/enums/universal-macro.json
+++ b/schemas/cache/enums/universal-macro.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/universal-macro.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs. Macros are replaced with actual values at impression time. See docs/creative/universal-macros.mdx for detailed documentation.",
   "enum": [
diff --git a/schemas/cache/enums/update-frequency.json b/schemas/cache/enums/update-frequency.json
index 3aaca0788..c014e9925 100644
--- a/schemas/cache/enums/update-frequency.json
+++ b/schemas/cache/enums/update-frequency.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/update-frequency.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Frequency of product catalog updates",
   "enum": [
diff --git a/schemas/cache/enums/url-asset-type.json b/schemas/cache/enums/url-asset-type.json
index fce4ecd75..3b7c8afc7 100644
--- a/schemas/cache/enums/url-asset-type.json
+++ b/schemas/cache/enums/url-asset-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/url-asset-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Types of URL assets for tracking and click-through purposes",
   "enum": [
diff --git a/schemas/cache/enums/validation-mode.json b/schemas/cache/enums/validation-mode.json
index 8133d3cd2..55d728442 100644
--- a/schemas/cache/enums/validation-mode.json
+++ b/schemas/cache/enums/validation-mode.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/validation-mode.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Creative validation strictness levels",
   "enum": [
diff --git a/schemas/cache/enums/vast-tracking-event.json b/schemas/cache/enums/vast-tracking-event.json
index 76ab27fda..5e91e0b4f 100644
--- a/schemas/cache/enums/vast-tracking-event.json
+++ b/schemas/cache/enums/vast-tracking-event.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/vast-tracking-event.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Standard VAST tracking events for video ad playback and interaction",
   "enum": [
diff --git a/schemas/cache/enums/vast-version.json b/schemas/cache/enums/vast-version.json
index b3da3cff8..825c64457 100644
--- a/schemas/cache/enums/vast-version.json
+++ b/schemas/cache/enums/vast-version.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/vast-version.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Supported VAST (Video Ad Serving Template) specification versions",
   "enum": [
diff --git a/schemas/cache/enums/viewability-standard.json b/schemas/cache/enums/viewability-standard.json
new file mode 100644
index 000000000..c2068dcbb
--- /dev/null
+++ b/schemas/cache/enums/viewability-standard.json
@@ -0,0 +1,14 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "Viewability Standard",
+  "description": "Viewability measurement standard applied to determine whether an impression qualifies as viewable. These are materially different thresholds and should not be compared across standards.",
+  "type": "string",
+  "enum": [
+    "mrc",
+    "groupm"
+  ],
+  "enumDescriptions": {
+    "mrc": "MRC/IAB standard: 50% of pixels in view for 1 continuous second (display) or 2 continuous seconds (video).",
+    "groupm": "GroupM standard: 100% of pixels in view for 1 continuous second (display) or 50% of video duration."
+  }
+}
\ No newline at end of file
diff --git a/schemas/cache/enums/wcag-level.json b/schemas/cache/enums/wcag-level.json
index 5b8726cab..8b47b19da 100644
--- a/schemas/cache/enums/wcag-level.json
+++ b/schemas/cache/enums/wcag-level.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/wcag-level.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Web Content Accessibility Guidelines conformance level",
   "enum": [
diff --git a/schemas/cache/enums/webhook-response-type.json b/schemas/cache/enums/webhook-response-type.json
index df78f8e1d..792c5f1dc 100644
--- a/schemas/cache/enums/webhook-response-type.json
+++ b/schemas/cache/enums/webhook-response-type.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/webhook-response-type.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Expected response content type from webhook endpoints",
   "enum": [
diff --git a/schemas/cache/enums/webhook-security-method.json b/schemas/cache/enums/webhook-security-method.json
index 3a7a18e4f..3762a1057 100644
--- a/schemas/cache/enums/webhook-security-method.json
+++ b/schemas/cache/enums/webhook-security-method.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/enums/webhook-security-method.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Security methods for authenticating webhook requests",
   "enum": [
diff --git a/schemas/cache/extensions/extension-meta.json b/schemas/cache/extensions/extension-meta.json
index fcd8c48b5..26ae70f0f 100644
--- a/schemas/cache/extensions/extension-meta.json
+++ b/schemas/cache/extensions/extension-meta.json
@@ -1,13 +1,7 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/extensions/extension-meta.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Schema that all extension files must follow. Combines metadata (valid_from, docs_url) with the actual extension data schema. Extensions are auto-discovered from /schemas/extensions/*.json and included in versioned builds based on valid_from/valid_until.",
   "properties": {
-    "$id": {
-      "description": "Extension ID following pattern /schemas/extensions/{namespace}.json",
-      "pattern": "^/schemas/extensions/[a-z][a-z0-9_]*\\.json$",
-      "type": "string"
-    },
     "$schema": {
       "const": "http://json-schema.org/draft-07/schema#",
       "type": "string"
diff --git a/schemas/cache/extensions/index.json b/schemas/cache/extensions/index.json
index 98610120d..54bdc261c 100644
--- a/schemas/cache/extensions/index.json
+++ b/schemas/cache/extensions/index.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/extensions/index.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "_generated": true,
   "_generatedAt": "2026-04-01T12:57:12.935Z",
diff --git a/schemas/cache/governance/audience-constraints.json b/schemas/cache/governance/audience-constraints.json
index 6ec1c3d07..6e46cf39b 100644
--- a/schemas/cache/governance/audience-constraints.json
+++ b/schemas/cache/governance/audience-constraints.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/audience-constraints.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Buyer-defined audience targeting constraints for a campaign plan. Specifies who the campaign should and should not reach. The governance agent evaluates seller targeting against these constraints during check_governance.",
@@ -8,7 +7,7 @@
     "exclude": {
       "description": "Excluded audience criteria. The seller's targeting must not overlap with these. Exclusions take precedence over inclusions. Used for protected groups, vulnerable communities, regulatory restrictions, or brand safety.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/audience-selector.json"
+        "$ref": "../core/audience-selector.json"
       },
       "minItems": 1,
       "type": "array"
@@ -16,7 +15,7 @@
     "include": {
       "description": "Desired audience criteria. The seller's targeting should align with these. Each criterion is evaluated independently \u2014 the combined targeting should satisfy at least one inclusion criterion.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/audience-selector.json"
+        "$ref": "../core/audience-selector.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/governance/check-governance-request.json b/schemas/cache/governance/check-governance-request.json
index 6786471b5..a2ee58434 100644
--- a/schemas/cache/governance/check-governance-request.json
+++ b/schemas/cache/governance/check-governance-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/check-governance-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Universal governance check for campaign actions. The governance agent infers the check type from the fields present: tool+payload (intent check, orchestrator) or media_buy_id+planned_delivery (execution check, seller).",
@@ -139,7 +138,7 @@
       "type": "string"
     },
     "invoice_recipient": {
-      "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+      "$ref": "../core/business-entity.json",
       "description": "Per-buy invoice recipient from create_media_buy or update_media_buy. MUST be present when the tool payload includes invoice_recipient, so the governance agent can validate billing changes."
     },
     "media_buy_id": {
@@ -157,7 +156,7 @@
       "type": "object"
     },
     "phase": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/governance-phase.json",
+      "$ref": "../enums/governance-phase.json",
       "default": "purchase",
       "description": "The phase of the media buy lifecycle. 'purchase': initial create_media_buy. 'modification': update_media_buy. 'delivery': periodic delivery reporting. Defaults to 'purchase' if omitted."
     },
@@ -166,7 +165,7 @@
       "type": "string"
     },
     "planned_delivery": {
-      "$ref": "/schemas/3.0.0-rc.3/core/planned-delivery.json",
+      "$ref": "../core/planned-delivery.json",
       "description": "What the seller will actually deliver. Present on execution checks."
     },
     "tool": {
diff --git a/schemas/cache/governance/check-governance-response.json b/schemas/cache/governance/check-governance-response.json
index 7100cf906..e95af34ae 100644
--- a/schemas/cache/governance/check-governance-response.json
+++ b/schemas/cache/governance/check-governance-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/check-governance-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Governance agent's response to a check request. Returns whether the action is approved under the campaign plan.",
@@ -78,7 +77,7 @@
             "type": "string"
           },
           "severity": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/escalation-severity.json"
+            "$ref": "../enums/escalation-severity.json"
           },
           "uncertainty_reason": {
             "description": "Explanation of why confidence is below 1.0 (e.g., 'Targeting includes regions that partially overlap jurisdiction boundaries'). Present when confidence is below a governance-agent-defined threshold.",
diff --git a/schemas/cache/governance/get-plan-audit-logs-request.json b/schemas/cache/governance/get-plan-audit-logs-request.json
index 926bb49d0..dd929787b 100644
--- a/schemas/cache/governance/get-plan-audit-logs-request.json
+++ b/schemas/cache/governance/get-plan-audit-logs-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/get-plan-audit-logs-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "anyOf": [
diff --git a/schemas/cache/governance/get-plan-audit-logs-response.json b/schemas/cache/governance/get-plan-audit-logs-response.json
index 604e03cf4..ea09bc741 100644
--- a/schemas/cache/governance/get-plan-audit-logs-response.json
+++ b/schemas/cache/governance/get-plan-audit-logs-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/get-plan-audit-logs-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Governance state and audit trail for one or more plans.",
@@ -103,7 +102,7 @@
                         "type": "string"
                       },
                       "severity": {
-                        "$ref": "/schemas/3.0.0-rc.3/enums/escalation-severity.json"
+                        "$ref": "../enums/escalation-severity.json"
                       }
                     },
                     "required": [
@@ -124,7 +123,7 @@
                   "type": "string"
                 },
                 "outcome": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/outcome-type.json",
+                  "$ref": "../enums/outcome-type.json",
                   "description": "Outcome type (present for outcome entries)."
                 },
                 "outcome_status": {
diff --git a/schemas/cache/governance/policy-entry.json b/schemas/cache/governance/policy-entry.json
index a3209a81f..553050fc1 100644
--- a/schemas/cache/governance/policy-entry.json
+++ b/schemas/cache/governance/policy-entry.json
@@ -19,19 +19,18 @@
       "type": "object"
     }
   },
-  "$id": "/schemas/3.0.0-rc.3/governance/policy-entry.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A complete policy in the policy registry. Policies use natural language text evaluated by governance agents (LLMs), following the same pattern as Content Standards. The registry's value is in structured metadata (jurisdiction, policy category, source, enforcement level) and calibration exemplars.",
   "properties": {
     "category": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/policy-category.json",
+      "$ref": "../enums/policy-category.json",
       "description": "The nature of the obligation: regulation (legal requirement) or standard (best practice)."
     },
     "channels": {
       "description": "Advertising channels this policy applies to. If omitted or null, the policy applies to all channels.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "type": "array"
     },
@@ -45,7 +44,7 @@
       "type": "string"
     },
     "enforcement": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/policy-enforcement.json",
+      "$ref": "../enums/policy-enforcement.json",
       "description": "How governance agents treat violations. Regulations are typically \"must\"; standards are typically \"should\"."
     },
     "exemplars": {
@@ -70,12 +69,12 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "governance_domains": {
       "description": "Governance sub-domains this policy applies to. Determines which types of governance agents can declare registry:{policy_id} features. For example, a policy with domains [\"creative\", \"property\"] can be declared as a feature by both creative and property governance agents.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/governance-domain.json"
+        "$ref": "../enums/governance-domain.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/governance/policy-ref.json b/schemas/cache/governance/policy-ref.json
index 81cf75ae4..dd6d16353 100644
--- a/schemas/cache/governance/policy-ref.json
+++ b/schemas/cache/governance/policy-ref.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/policy-ref.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A reference to a policy in the policy registry. Used in brand compliance configurations to declare which registry policies apply.",
diff --git a/schemas/cache/governance/report-plan-outcome-request.json b/schemas/cache/governance/report-plan-outcome-request.json
index 647c64b7b..a3fa86ff0 100644
--- a/schemas/cache/governance/report-plan-outcome-request.json
+++ b/schemas/cache/governance/report-plan-outcome-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/report-plan-outcome-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Report the outcome of an action to the governance agent. Called by the orchestrator (buyer-side agent) after a seller responds. This is the 'after' half of the governance loop. Sellers do not call this task -- they report delivery data via check_governance with phase 'delivery'.",
@@ -88,7 +87,7 @@
       "type": "string"
     },
     "outcome": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/outcome-type.json",
+      "$ref": "../enums/outcome-type.json",
       "description": "Outcome type."
     },
     "plan_id": {
@@ -128,7 +127,7 @@
           "type": "array"
         },
         "planned_delivery": {
-          "$ref": "/schemas/3.0.0-rc.3/core/planned-delivery.json",
+          "$ref": "../core/planned-delivery.json",
           "description": "What the seller said it will deliver. When seller-side governance is not configured, this is the governance agent's only view of the seller's delivery parameters."
         }
       },
diff --git a/schemas/cache/governance/report-plan-outcome-response.json b/schemas/cache/governance/report-plan-outcome-response.json
index a2a4be528..f1948eaeb 100644
--- a/schemas/cache/governance/report-plan-outcome-response.json
+++ b/schemas/cache/governance/report-plan-outcome-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/report-plan-outcome-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response from reporting an action outcome. Only returned to the orchestrator (buyer-side agent) that manages the plan. Sellers report delivery data via check_governance with phase 'delivery', not via this task.",
@@ -27,7 +26,7 @@
             "type": "string"
           },
           "severity": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/escalation-severity.json",
+            "$ref": "../enums/escalation-severity.json",
             "description": "Finding severity."
           }
         },
diff --git a/schemas/cache/governance/sync-plans-request.json b/schemas/cache/governance/sync-plans-request.json
index 55b6083ee..35fa86e28 100644
--- a/schemas/cache/governance/sync-plans-request.json
+++ b/schemas/cache/governance/sync-plans-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/sync-plans-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Push campaign plans to the governance agent. A plan defines the authorized parameters for a campaign -- budget limits, channels, flight dates, and authorized markets.",
@@ -21,11 +20,11 @@
             ]
           },
           "audience": {
-            "$ref": "/schemas/3.0.0-rc.3/governance/audience-constraints.json",
+            "$ref": "audience-constraints.json",
             "description": "Audience targeting constraints. Defines who the campaign should reach (include) and must not reach (exclude). The governance agent evaluates seller targeting against these constraints."
           },
           "brand": {
-            "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+            "$ref": "../core/brand-ref.json",
             "description": "Brand or organization being governed. For campaign plans, the governance agent resolves the brand's compliance configuration. For portfolio plans, this is the holding company or parent organization."
           },
           "budget": {
@@ -33,7 +32,7 @@
             "description": "Budget authorization parameters.",
             "properties": {
               "authority_level": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/budget-authority-level.json",
+                "$ref": "../enums/budget-authority-level.json",
                 "description": "Budget authority level for the orchestrator agent."
               },
               "currency": {
@@ -67,7 +66,7 @@
               "allowed": {
                 "description": "Channels the orchestrator may use.",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+                  "$ref": "../enums/channels.json"
                 },
                 "type": "array"
               },
@@ -90,7 +89,7 @@
               "required": {
                 "description": "Channels that must be included in the media mix.",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+                  "$ref": "../enums/channels.json"
                 },
                 "type": "array"
               }
@@ -123,7 +122,7 @@
                   "type": "string"
                 },
                 "authority": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/delegation-authority.json",
+                  "$ref": "../enums/delegation-authority.json",
                   "description": "Authority level granted to this agent."
                 },
                 "budget_limit": {
@@ -165,7 +164,7 @@
             "type": "array"
           },
           "ext": {
-            "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+            "$ref": "../core/ext.json"
           },
           "flight": {
             "additionalProperties": false,
@@ -275,7 +274,7 @@
           "restricted_attributes": {
             "description": "Personal data categories that must not be used for targeting in this campaign. Applies horizontally across all audience criteria. Used for EU DSA Article 26 compliance (prohibits targeting on GDPR Article 9 special categories) and similar regulations. The governance agent flags any audience targeting that references these attributes.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/restricted-attribute.json"
+              "$ref": "../enums/restricted-attribute.json"
             },
             "minItems": 1,
             "type": "array"
diff --git a/schemas/cache/governance/sync-plans-response.json b/schemas/cache/governance/sync-plans-response.json
index 85bc46a6d..85f7f47ea 100644
--- a/schemas/cache/governance/sync-plans-response.json
+++ b/schemas/cache/governance/sync-plans-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/governance/sync-plans-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response from syncing campaign plans. Returns status and active validation categories for each plan.",
@@ -45,7 +44,7 @@
               "additionalProperties": false,
               "properties": {
                 "enforcement": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/policy-enforcement.json",
+                  "$ref": "../enums/policy-enforcement.json",
                   "description": "Enforcement level for this policy."
                 },
                 "policy_id": {
diff --git a/schemas/cache/index.json b/schemas/cache/index.json
index 170c362f6..02c3de49c 100644
--- a/schemas/cache/index.json
+++ b/schemas/cache/index.json
@@ -1,12 +1,11 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "$id": "/schemas/3.0.0-rc.2/index.json",
   "title": "AdCP Schema Registry",
   "version": "1.0.0",
   "description": "Registry of all AdCP JSON schemas for validation and discovery",
   "adcp_version": "3.0.0-rc.2",
   "versioning": {
-    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP 3.0.0-rc.2. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/v3/ → /schemas/3.0.0-rc.2/."
+    "note": "AdCP uses build-time versioning. This directory contains schemas for AdCP 3.0.0-rc.2. Full semantic versions are available at /schemas/{version}/ (e.g., /schemas/2.5.0/). Major version aliases point to the latest release: /schemas/v3/ \u2192 /schemas/3.0.0-rc.2/."
   },
   "lastUpdated": "2026-03-15",
   "baseUrl": "/schemas/3.0.0-rc.2",
@@ -15,399 +14,399 @@
       "description": "Core data models used throughout AdCP",
       "schemas": {
         "product": {
-          "$ref": "/schemas/3.0.0-rc.2/core/product.json",
+          "$ref": "core/product.json",
           "description": "Represents available advertising inventory"
         },
         "media-buy": {
-          "$ref": "/schemas/3.0.0-rc.2/core/media-buy.json",
+          "$ref": "core/media-buy.json",
           "description": "Represents a purchased advertising campaign"
         },
         "package": {
-          "$ref": "/schemas/3.0.0-rc.2/core/package.json",
+          "$ref": "core/package.json",
           "description": "A specific product within a media buy (line item)"
         },
         "creative-asset": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-asset.json",
+          "$ref": "core/creative-asset.json",
           "description": "Creative asset for upload to library - supports static assets, generative formats, and third-party ad serving (VAST, DAAST, HTML, JavaScript)"
         },
         "account": {
-          "$ref": "/schemas/3.0.0-rc.2/core/account.json",
+          "$ref": "core/account.json",
           "description": "Billing account representing who pays for advertising. Accounts have rate cards, payment terms, and platform mappings."
         },
         "targeting": {
-          "$ref": "/schemas/3.0.0-rc.2/core/targeting.json",
+          "$ref": "core/targeting.json",
           "description": "Audience targeting criteria"
         },
         "duration": {
-          "$ref": "/schemas/3.0.0-rc.2/core/duration.json",
+          "$ref": "core/duration.json",
           "description": "A time duration with value and unit (hours or days)"
         },
         "frequency-cap": {
-          "$ref": "/schemas/3.0.0-rc.2/core/frequency-cap.json",
+          "$ref": "core/frequency-cap.json",
           "description": "Frequency capping settings"
         },
         "planned-delivery": {
-          "$ref": "/schemas/3.0.0-rc.2/core/planned-delivery.json",
+          "$ref": "core/planned-delivery.json",
           "description": "The seller's interpreted delivery parameters for a media buy"
         },
         "geo-breakdown-support": {
-          "$ref": "/schemas/3.0.0-rc.2/core/geo-breakdown-support.json",
+          "$ref": "core/geo-breakdown-support.json",
           "description": "Geographic breakdown capability declaration for reporting"
         },
         "format": {
-          "$ref": "/schemas/3.0.0-rc.2/core/format.json",
+          "$ref": "core/format.json",
           "description": "Represents a creative format with its requirements"
         },
         "overlay": {
-          "$ref": "/schemas/3.0.0-rc.2/core/overlay.json",
+          "$ref": "core/overlay.json",
           "description": "A publisher-controlled element that renders on top of buyer creative content within an ad placement"
         },
         "outcome-measurement": {
-          "$ref": "/schemas/3.0.0-rc.2/core/outcome-measurement.json",
+          "$ref": "core/outcome-measurement.json",
           "description": "Business outcome measurement capabilities included with a product"
         },
         "delivery-metrics": {
-          "$ref": "/schemas/3.0.0-rc.2/core/delivery-metrics.json",
+          "$ref": "core/delivery-metrics.json",
           "description": "Standard delivery metrics for reporting"
         },
         "creative-policy": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-policy.json",
+          "$ref": "core/creative-policy.json",
           "description": "Creative requirements and restrictions for a product"
         },
         "response": {
-          "$ref": "/schemas/3.0.0-rc.2/core/response.json",
+          "$ref": "core/response.json",
           "description": "Standard response structure (MCP)"
         },
         "error": {
-          "$ref": "/schemas/3.0.0-rc.2/core/error.json",
+          "$ref": "core/error.json",
           "description": "Standard error structure"
         },
         "generation-credential": {
-          "$ref": "/schemas/3.0.0-rc.2/core/generation-credential.json",
+          "$ref": "core/generation-credential.json",
           "description": "Scoped credential for generating rights-cleared content via LLM providers"
         },
         "rights-constraint": {
-          "$ref": "/schemas/3.0.0-rc.2/core/rights-constraint.json",
+          "$ref": "core/rights-constraint.json",
           "description": "Rights metadata attached to creative manifests for tracking validity and constraints"
         },
         "pagination-request": {
-          "$ref": "/schemas/3.0.0-rc.2/core/pagination-request.json",
+          "$ref": "core/pagination-request.json",
           "description": "Standard cursor-based pagination parameters for list request schemas"
         },
         "pagination-response": {
-          "$ref": "/schemas/3.0.0-rc.2/core/pagination-response.json",
+          "$ref": "core/pagination-response.json",
           "description": "Standard cursor-based pagination metadata for list response schemas"
         },
         "date-range": {
-          "$ref": "/schemas/3.0.0-rc.2/core/date-range.json",
+          "$ref": "core/date-range.json",
           "description": "Date range with inclusive start and end calendar dates"
         },
         "datetime-range": {
-          "$ref": "/schemas/3.0.0-rc.2/core/datetime-range.json",
+          "$ref": "core/datetime-range.json",
           "description": "Datetime range with inclusive start and end timestamps"
         },
         "creative-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-item.json",
+          "$ref": "core/creative-item.json",
           "description": "Item within a multi-asset creative format"
         },
         "creative-assignment": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-assignment.json",
+          "$ref": "core/creative-assignment.json",
           "description": "Assignment of a creative asset to a package"
         },
         "creative-manifest": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-manifest.json",
+          "$ref": "core/creative-manifest.json",
           "description": "Complete specification of a creative with all assets needed for rendering"
         },
         "performance-feedback": {
-          "$ref": "/schemas/3.0.0-rc.2/core/performance-feedback.json",
+          "$ref": "core/performance-feedback.json",
           "description": "Performance feedback data for a media buy or package"
         },
         "creative-variant": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-variant.json",
+          "$ref": "core/creative-variant.json",
           "description": "A specific execution variant of a creative with performance metrics"
         },
         "property": {
-          "$ref": "/schemas/3.0.0-rc.2/core/property.json",
+          "$ref": "core/property.json",
           "description": "An advertising property that can be validated via adagents.json"
         },
         "creative-brief": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-brief.json",
+          "$ref": "core/creative-brief.json",
           "description": "Campaign-level creative context for AI-powered creative generation"
         },
         "creative-variable": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-variable.json",
+          "$ref": "core/creative-variable.json",
           "description": "A dynamic content variable (DCO slot) on a creative"
         },
         "reference-asset": {
-          "$ref": "/schemas/3.0.0-rc.2/core/reference-asset.json",
+          "$ref": "core/reference-asset.json",
           "description": "A reference asset with semantic role for creative context"
         },
         "proposal": {
-          "$ref": "/schemas/3.0.0-rc.2/core/proposal.json",
+          "$ref": "core/proposal.json",
           "description": "A proposed media plan with budget allocations across products - actionable via create_media_buy"
         },
         "product-allocation": {
-          "$ref": "/schemas/3.0.0-rc.2/core/product-allocation.json",
+          "$ref": "core/product-allocation.json",
           "description": "A budget allocation for a specific product within a proposal"
         },
         "delivery-forecast": {
-          "$ref": "/schemas/3.0.0-rc.2/core/delivery-forecast.json",
+          "$ref": "core/delivery-forecast.json",
           "description": "Forecasted delivery metrics for a proposal or product allocation"
         },
         "forecast-range": {
-          "$ref": "/schemas/3.0.0-rc.2/core/forecast-range.json",
+          "$ref": "core/forecast-range.json",
           "description": "A forecast value with optional low/high bounds"
         },
         "forecast-point": {
-          "$ref": "/schemas/3.0.0-rc.2/core/forecast-point.json",
+          "$ref": "core/forecast-point.json",
           "description": "A single point on a budget-to-outcome curve"
         },
         "catalog": {
-          "$ref": "/schemas/3.0.0-rc.2/core/catalog.json",
-          "description": "A typed data feed — structural (offering, product, inventory, store, promotion) or vertical (hotel, flight, job, vehicle, real_estate, education, destination). Can be synced, inline, or fetched from a URL."
+          "$ref": "core/catalog.json",
+          "description": "A typed data feed \u2014 structural (offering, product, inventory, store, promotion) or vertical (hotel, flight, job, vehicle, real_estate, education, destination). Can be synced, inline, or fetched from a URL."
         },
         "offering": {
-          "$ref": "/schemas/3.0.0-rc.2/core/offering.json",
+          "$ref": "core/offering.json",
           "description": "A promotable offering from a brand with structured asset groups and optional conversational SI experiences"
         },
         "offering-asset-group": {
-          "$ref": "/schemas/3.0.0-rc.2/core/offering-asset-group.json",
+          "$ref": "core/offering-asset-group.json",
           "description": "A structured group of creative assets within an offering, identified by group ID and asset type"
         },
         "store-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/store-item.json",
+          "$ref": "core/store-item.json",
           "description": "A physical store or location with coordinates, address, and catchment areas for proximity targeting"
         },
         "catchment": {
-          "$ref": "/schemas/3.0.0-rc.2/core/catchment.json",
+          "$ref": "core/catchment.json",
           "description": "A catchment area definition using travel time (isochrone), simple radius, or pre-computed GeoJSON geometry"
         },
         "price": {
-          "$ref": "/schemas/3.0.0-rc.2/core/price.json",
+          "$ref": "core/price.json",
           "description": "A monetary amount with currency and optional billing period for catalog item pricing"
         },
         "hotel-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/hotel-item.json",
+          "$ref": "core/hotel-item.json",
           "description": "A hotel or lodging property for hotel-type catalogs"
         },
         "flight-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/flight-item.json",
+          "$ref": "core/flight-item.json",
           "description": "A flight route for flight-type catalogs"
         },
         "job-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/job-item.json",
+          "$ref": "core/job-item.json",
           "description": "A job posting for job-type catalogs"
         },
         "vehicle-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/vehicle-item.json",
+          "$ref": "core/vehicle-item.json",
           "description": "A vehicle listing for vehicle-type catalogs"
         },
         "real-estate-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/real-estate-item.json",
+          "$ref": "core/real-estate-item.json",
           "description": "A property listing for real-estate-type catalogs"
         },
         "education-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/education-item.json",
+          "$ref": "core/education-item.json",
           "description": "An educational program or course for education-type catalogs"
         },
         "destination-item": {
-          "$ref": "/schemas/3.0.0-rc.2/core/destination-item.json",
+          "$ref": "core/destination-item.json",
           "description": "A travel destination for destination-type catalogs"
         },
         "start-timing": {
-          "$ref": "/schemas/3.0.0-rc.2/core/start-timing.json",
+          "$ref": "core/start-timing.json",
           "description": "Campaign start timing: 'asap' or ISO 8601 date-time"
         },
         "pricing-option": {
-          "$ref": "/schemas/3.0.0-rc.2/core/pricing-option.json",
+          "$ref": "core/pricing-option.json",
           "description": "A pricing model option offered by a publisher for a product"
         },
         "protocol-envelope": {
-          "$ref": "/schemas/3.0.0-rc.2/core/protocol-envelope.json",
+          "$ref": "core/protocol-envelope.json",
           "description": "Standard envelope structure added by protocol layer (MCP, A2A, REST) that wraps task response payloads with protocol-level fields like status, context_id, task_id, and message"
         },
         "placement": {
-          "$ref": "/schemas/3.0.0-rc.2/core/placement.json",
+          "$ref": "core/placement.json",
           "description": "Represents a specific ad placement within a product's inventory"
         },
         "mcp-webhook-payload": {
-          "$ref": "/schemas/3.0.0-rc.2/core/mcp-webhook-payload.json",
+          "$ref": "core/mcp-webhook-payload.json",
           "description": "MCP-specific webhook payload structure for HTTP-based push notifications. Protocol-level fields at top-level (task_id, status, etc.) and AdCP data layer nested under 'result'. NOT used in A2A (uses native statusUpdate)."
         },
         "destination": {
-          "$ref": "/schemas/3.0.0-rc.2/core/destination.json",
+          "$ref": "core/destination.json",
           "description": "A destination platform where signals can be activated (DSP, sales agent, etc.)"
         },
         "deployment": {
-          "$ref": "/schemas/3.0.0-rc.2/core/deployment.json",
+          "$ref": "core/deployment.json",
           "description": "A signal deployment to a specific destination platform with activation status and key"
         },
         "publisher-property-selector": {
-          "$ref": "/schemas/3.0.0-rc.2/core/publisher-property-selector.json",
+          "$ref": "core/publisher-property-selector.json",
           "description": "Selects properties from a publisher's adagents.json - supports three patterns: all properties, specific IDs, or by tags"
         },
         "product-filters": {
-          "$ref": "/schemas/3.0.0-rc.2/core/product-filters.json",
+          "$ref": "core/product-filters.json",
           "description": "Structured filters for product discovery"
         },
         "creative-filters": {
-          "$ref": "/schemas/3.0.0-rc.2/core/creative-filters.json",
+          "$ref": "core/creative-filters.json",
           "description": "Filter criteria for querying creative assets from the centralized library"
         },
         "signal-filters": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-filters.json",
+          "$ref": "core/signal-filters.json",
           "description": "Filters to refine signal discovery results"
         },
         "signal-pricing": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-pricing.json",
-          "description": "Signal pricing model — discriminated union of cpm (fixed CPM), percent_of_media (percentage of spend, with optional CPM cap), or flat_fee (fixed charge per reporting period)"
+          "$ref": "core/signal-pricing.json",
+          "description": "Signal pricing model \u2014 discriminated union of cpm (fixed CPM), percent_of_media (percentage of spend, with optional CPM cap), or flat_fee (fixed charge per reporting period)"
         },
         "signal-pricing-option": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-pricing-option.json",
+          "$ref": "core/signal-pricing-option.json",
           "description": "A pricing option offered by a signals agent, combining a pricing_option_id with a signal pricing model. Returned in get_signals, referenced in report_usage."
         },
         "property-id": {
-          "$ref": "/schemas/3.0.0-rc.2/core/property-id.json",
+          "$ref": "core/property-id.json",
           "description": "Identifier for a publisher property - lowercase alphanumeric with underscores only"
         },
         "property-tag": {
-          "$ref": "/schemas/3.0.0-rc.2/core/property-tag.json",
+          "$ref": "core/property-tag.json",
           "description": "Tag for categorizing publisher properties - lowercase alphanumeric with underscores only"
         },
         "property-list-ref": {
-          "$ref": "/schemas/3.0.0-rc.2/core/property-list-ref.json",
+          "$ref": "core/property-list-ref.json",
           "description": "Reference to an externally managed property list for passing large property sets"
         },
         "identifier": {
-          "$ref": "/schemas/3.0.0-rc.2/core/identifier.json",
+          "$ref": "core/identifier.json",
           "description": "A property identifier with type and value"
         },
         "media-buy-features": {
-          "$ref": "/schemas/3.0.0-rc.2/core/media-buy-features.json",
+          "$ref": "core/media-buy-features.json",
           "description": "Optional media-buy protocol features for capability declarations and product filters"
         },
         "brand-id": {
-          "$ref": "/schemas/3.0.0-rc.2/core/brand-id.json",
+          "$ref": "core/brand-id.json",
           "description": "Identifier for a brand within a house portfolio - lowercase alphanumeric with underscores only"
         },
         "brand-ref": {
-          "$ref": "/schemas/3.0.0-rc.2/core/brand-ref.json",
+          "$ref": "core/brand-ref.json",
           "description": "Reference to a brand via house domain + brand_id (like publisher + property_id)"
         },
         "signal-id": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-id.json",
+          "$ref": "core/signal-id.json",
           "description": "Universal signal identifier - discriminated union by source: 'catalog' (data_provider_domain + id, verifiable) or 'agent' (agent_url + id, trust-based)"
         },
         "signal-definition": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-definition.json",
+          "$ref": "core/signal-definition.json",
           "description": "Signal definition published in a data provider's adagents.json catalog"
         },
         "data-provider-signal-selector": {
-          "$ref": "/schemas/3.0.0-rc.2/core/data-provider-signal-selector.json",
+          "$ref": "core/data-provider-signal-selector.json",
           "description": "Selects signals from a data provider's adagents.json - supports three patterns: all signals, specific IDs, or by tags"
         },
         "daypart-target": {
-          "$ref": "/schemas/3.0.0-rc.2/core/daypart-target.json",
+          "$ref": "core/daypart-target.json",
           "description": "A time window for daypart targeting with days of week and hour range"
         },
         "signal-targeting": {
-          "$ref": "/schemas/3.0.0-rc.2/core/signal-targeting.json",
+          "$ref": "core/signal-targeting.json",
           "description": "Targeting constraint for a signal - discriminated union by value_type (binary, categorical, numeric)"
         },
         "event": {
-          "$ref": "/schemas/3.0.0-rc.2/core/event.json",
+          "$ref": "core/event.json",
           "description": "A marketing event (conversion, engagement, or custom) for attribution"
         },
         "user-match": {
-          "$ref": "/schemas/3.0.0-rc.2/core/user-match.json",
+          "$ref": "core/user-match.json",
           "description": "User identifiers for attribution matching (UIDs, hashed identifiers, click IDs)"
         },
         "event-custom-data": {
-          "$ref": "/schemas/3.0.0-rc.2/core/event-custom-data.json",
+          "$ref": "core/event-custom-data.json",
           "description": "Event-specific data for attribution and reporting"
         },
         "attribution-window": {
-          "$ref": "/schemas/3.0.0-rc.2/core/attribution-window.json",
+          "$ref": "core/attribution-window.json",
           "description": "Attribution methodology and lookback windows for conversion measurement"
         },
         "optimization-goal": {
-          "$ref": "/schemas/3.0.0-rc.2/core/optimization-goal.json",
+          "$ref": "core/optimization-goal.json",
           "description": "Conversion optimization goal for a package - event source, event type, target ROAS/CPA, and attribution window"
         },
         "audience-member": {
-          "$ref": "/schemas/3.0.0-rc.2/core/audience-member.json",
+          "$ref": "core/audience-member.json",
           "description": "Hashed identifiers for a CRM audience member (hashed email, phone, or universal IDs)"
         },
         "account-ref": {
-          "$ref": "/schemas/3.0.0-rc.2/core/account-ref.json",
+          "$ref": "core/account-ref.json",
           "description": "Reference to an account by seller-assigned ID or natural key (brand, operator, optional sandbox)"
         },
         "provenance": {
-          "$ref": "/schemas/3.0.0-rc.2/core/provenance.json",
-          "description": "AI provenance and disclosure metadata — declares how content was produced, C2PA references, regulatory disclosure requirements, and third-party verification results"
+          "$ref": "core/provenance.json",
+          "description": "AI provenance and disclosure metadata \u2014 declares how content was produced, C2PA references, regulatory disclosure requirements, and third-party verification results"
         }
       },
       "requirements": {
         "description": "Typed requirement schemas for creative assets in format definitions",
         "schemas": {
           "asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/asset-requirements.json",
+            "$ref": "core/requirements/asset-requirements.json",
             "description": "Combined schema that allows any typed asset requirements"
           },
           "html-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/html-asset-requirements.json",
+            "$ref": "core/requirements/html-asset-requirements.json",
             "description": "Requirements for HTML creative assets - sandbox compatibility, external resources, allowed domains"
           },
           "image-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/image-asset-requirements.json",
+            "$ref": "core/requirements/image-asset-requirements.json",
             "description": "Requirements for image creative assets - dimensions, formats, file size, animation"
           },
           "video-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/video-asset-requirements.json",
+            "$ref": "core/requirements/video-asset-requirements.json",
             "description": "Requirements for video creative assets - dimensions, duration, codecs, bitrate"
           },
           "audio-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/audio-asset-requirements.json",
+            "$ref": "core/requirements/audio-asset-requirements.json",
             "description": "Requirements for audio creative assets - duration, formats, sample rate, channels"
           },
           "javascript-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/javascript-asset-requirements.json",
+            "$ref": "core/requirements/javascript-asset-requirements.json",
             "description": "Requirements for JavaScript creative assets - module type, external resources"
           },
           "text-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/text-asset-requirements.json",
+            "$ref": "core/requirements/text-asset-requirements.json",
             "description": "Requirements for text creative assets - character limits, line counts"
           },
           "url-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/url-asset-requirements.json",
+            "$ref": "core/requirements/url-asset-requirements.json",
             "description": "Requirements for URL assets - protocols, allowed domains, macro support"
           },
           "markdown-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/markdown-asset-requirements.json",
+            "$ref": "core/requirements/markdown-asset-requirements.json",
             "description": "Requirements for markdown creative assets"
           },
           "css-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/css-asset-requirements.json",
+            "$ref": "core/requirements/css-asset-requirements.json",
             "description": "Requirements for CSS creative assets"
           },
           "vast-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/vast-asset-requirements.json",
+            "$ref": "core/requirements/vast-asset-requirements.json",
             "description": "Requirements for VAST creative assets - version requirements"
           },
           "daast-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/daast-asset-requirements.json",
+            "$ref": "core/requirements/daast-asset-requirements.json",
             "description": "Requirements for DAAST creative assets"
           },
           "catalog-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/catalog-requirements.json",
+            "$ref": "core/requirements/catalog-requirements.json",
             "description": "Format-level declaration of what catalog feeds a creative requires"
           },
           "offering-asset-constraint": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/offering-asset-constraint.json",
+            "$ref": "core/requirements/offering-asset-constraint.json",
             "description": "Per-group creative requirements that each offering must satisfy within a catalog"
           },
           "webhook-asset-requirements": {
-            "$ref": "/schemas/3.0.0-rc.2/core/requirements/webhook-asset-requirements.json",
+            "$ref": "core/requirements/webhook-asset-requirements.json",
             "description": "Requirements for webhook creative assets"
           }
         }
@@ -417,347 +416,347 @@
       "description": "Enumerated types and constants",
       "schemas": {
         "pricing-model": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/pricing-model.json",
+          "$ref": "enums/pricing-model.json",
           "description": "Supported pricing models for advertising products"
         },
         "delivery-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/delivery-type.json",
+          "$ref": "enums/delivery-type.json",
           "description": "Type of inventory delivery"
         },
         "media-buy-status": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/media-buy-status.json",
+          "$ref": "enums/media-buy-status.json",
           "description": "Status of a media buy"
         },
         "creative-status": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-status.json",
+          "$ref": "enums/creative-status.json",
           "description": "Status of a creative asset"
         },
         "creative-approval-status": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-approval-status.json",
+          "$ref": "enums/creative-approval-status.json",
           "description": "Approval state of a creative on a specific package"
         },
         "creative-quality": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-quality.json",
+          "$ref": "enums/creative-quality.json",
           "description": "Quality tier for creative generation (draft, production)"
         },
         "pacing": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/pacing.json",
+          "$ref": "enums/pacing.json",
           "description": "Budget pacing strategy"
         },
         "frequency-cap-scope": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/frequency-cap-scope.json",
+          "$ref": "enums/frequency-cap-scope.json",
           "description": "Scope for frequency cap application"
         },
         "identifier-types": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/identifier-types.json",
+          "$ref": "enums/identifier-types.json",
           "description": "Valid identifier types for property identification across different media types"
         },
         "publisher-identifier-types": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/publisher-identifier-types.json",
+          "$ref": "enums/publisher-identifier-types.json",
           "description": "Valid identifier types for publisher/legal entity identification (TAG ID, DUNS, LEI, seller_id, GLN)"
         },
         "channels": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/channels.json",
+          "$ref": "enums/channels.json",
           "description": "Advertising channels (display, video, dooh, ctv, audio, etc.)"
         },
         "task-status": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/task-status.json",
+          "$ref": "enums/task-status.json",
           "description": "Standardized task status values based on A2A TaskState enum"
         },
         "task-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/task-type.json",
+          "$ref": "enums/task-type.json",
           "description": "Valid AdCP task types across all domains"
         },
         "asset-content-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/asset-content-type.json",
+          "$ref": "enums/asset-content-type.json",
           "description": "Types of content that can be used as creative assets (image, video, html, etc.)"
         },
         "disclosure-position": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/disclosure-position.json",
+          "$ref": "enums/disclosure-position.json",
           "description": "Where a required disclosure should appear within a creative"
         },
         "disclosure-persistence": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/disclosure-persistence.json",
+          "$ref": "enums/disclosure-persistence.json",
           "description": "How long a disclosure must persist during content playback or display"
         },
         "format-category": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/format-category.json",
+          "$ref": "enums/format-category.json",
           "description": "High-level categories for creative formats (audio, video, display, native, dooh, rich_media, universal)"
         },
         "vast-version": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/vast-version.json",
+          "$ref": "enums/vast-version.json",
           "description": "Supported VAST specification versions (2.0, 3.0, 4.0, 4.1, 4.2)"
         },
         "vast-tracking-event": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/vast-tracking-event.json",
+          "$ref": "enums/vast-tracking-event.json",
           "description": "Standard VAST tracking events for video playback and interaction"
         },
         "property-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/property-type.json",
+          "$ref": "enums/property-type.json",
           "description": "Types of advertising properties (website, mobile_app, ctv_app, dooh, podcast, radio, streaming_audio)"
         },
         "dimension-unit": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/dimension-unit.json",
+          "$ref": "enums/dimension-unit.json",
           "description": "Units of measurement for creative format dimensions (px, dp, inches, cm)"
         },
         "co-branding-requirement": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/co-branding-requirement.json",
+          "$ref": "enums/co-branding-requirement.json",
           "description": "Co-branding policy for creatives (required, optional, none)"
         },
         "landing-page-requirement": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/landing-page-requirement.json",
+          "$ref": "enums/landing-page-requirement.json",
           "description": "Landing page policy for creative destinations (any, retailer_site_only, must_include_retailer)"
         },
         "daast-version": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/daast-version.json",
+          "$ref": "enums/daast-version.json",
           "description": "Supported DAAST specification versions (1.0, 1.1)"
         },
         "daast-tracking-event": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/daast-tracking-event.json",
+          "$ref": "enums/daast-tracking-event.json",
           "description": "Standard DAAST tracking events for audio playback and interaction"
         },
         "day-of-week": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/day-of-week.json",
+          "$ref": "enums/day-of-week.json",
           "description": "Days of the week for daypart targeting"
         },
         "signal-catalog-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/signal-catalog-type.json",
+          "$ref": "enums/signal-catalog-type.json",
           "description": "Types of signal catalogs (marketplace, custom, owned)"
         },
         "metric-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/metric-type.json",
+          "$ref": "enums/metric-type.json",
           "description": "Performance metric types for feedback and optimization"
         },
         "feedback-source": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/feedback-source.json",
+          "$ref": "enums/feedback-source.json",
           "description": "Source of performance feedback data"
         },
         "forecast-method": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/forecast-method.json",
+          "$ref": "enums/forecast-method.json",
           "description": "Method used to produce a delivery forecast (estimate, modeled, guaranteed)"
         },
         "forecastable-metric": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/forecastable-metric.json",
+          "$ref": "enums/forecastable-metric.json",
           "description": "Standard metric names for delivery forecasts (audience_size, reach, impressions, clicks, spend, etc.)"
         },
         "forecast-range-unit": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/forecast-range-unit.json",
+          "$ref": "enums/forecast-range-unit.json",
           "description": "How to interpret forecast points: spend curve, reach/frequency curve, temporal (weekly/daily), or outcome targets (clicks/conversions)"
         },
         "demographic-system": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/demographic-system.json",
+          "$ref": "enums/demographic-system.json",
           "description": "Audience measurement systems for demographic notation (nielsen, barb, agf, oztam, mediametrie, custom)"
         },
         "reach-unit": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/reach-unit.json",
+          "$ref": "enums/reach-unit.json",
           "description": "Unit of measurement for reach metrics (individuals, households, devices, accounts, cookies, custom)"
         },
         "creative-agent-capability": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-agent-capability.json",
+          "$ref": "enums/creative-agent-capability.json",
           "description": "Capabilities supported by creative agents (validation, assembly, generation, preview, delivery)"
         },
         "adcp-domain": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/adcp-domain.json",
+          "$ref": "enums/adcp-domain.json",
           "description": "AdCP protocol domains (media-buy, signals, governance, creative, brand)"
         },
         "right-use": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/right-use.json",
+          "$ref": "enums/right-use.json",
           "description": "Types of rights usage (likeness, voice, endorsement, sync, etc.)"
         },
         "right-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/right-type.json",
+          "$ref": "enums/right-type.json",
           "description": "Categories of licensable rights (talent, music, brand_ip, stock_media)"
         },
         "http-method": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/http-method.json",
+          "$ref": "enums/http-method.json",
           "description": "HTTP methods for webhook requests (GET, POST)"
         },
         "webhook-response-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/webhook-response-type.json",
+          "$ref": "enums/webhook-response-type.json",
           "description": "Expected response content types from webhooks"
         },
         "webhook-security-method": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/webhook-security-method.json",
+          "$ref": "enums/webhook-security-method.json",
           "description": "Security methods for webhook authentication"
         },
         "javascript-module-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/javascript-module-type.json",
+          "$ref": "enums/javascript-module-type.json",
           "description": "JavaScript module format types (esm, commonjs, script)"
         },
         "markdown-flavor": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/markdown-flavor.json",
+          "$ref": "enums/markdown-flavor.json",
           "description": "Markdown specification flavors (commonmark, gfm)"
         },
         "url-asset-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/url-asset-type.json",
+          "$ref": "enums/url-asset-type.json",
           "description": "Types of URL assets (clickthrough, tracker_pixel, tracker_script)"
         },
         "validation-mode": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/validation-mode.json",
+          "$ref": "enums/validation-mode.json",
           "description": "Creative validation strictness levels (strict, lenient)"
         },
         "creative-action": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-action.json",
+          "$ref": "enums/creative-action.json",
           "description": "Actions taken on creatives during sync (created, updated, unchanged, failed, deleted)"
         },
         "notification-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/notification-type.json",
+          "$ref": "enums/notification-type.json",
           "description": "Types of delivery notifications (scheduled, final, delayed, adjusted)"
         },
         "reporting-frequency": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/reporting-frequency.json",
+          "$ref": "enums/reporting-frequency.json",
           "description": "Frequencies for delivery reports (hourly, daily, monthly)"
         },
         "available-metric": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/available-metric.json",
+          "$ref": "enums/available-metric.json",
           "description": "Standard delivery and performance metrics for reporting"
         },
         "preview-output-format": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/preview-output-format.json",
+          "$ref": "enums/preview-output-format.json",
           "description": "Output formats for creative previews (url, html)"
         },
         "sort-direction": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/sort-direction.json",
+          "$ref": "enums/sort-direction.json",
           "description": "Sort direction for list queries (asc, desc)"
         },
         "sort-metric": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/sort-metric.json",
+          "$ref": "enums/sort-metric.json",
           "description": "Numeric delivery metrics available for sorting breakdown rows"
         },
         "history-entry-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/history-entry-type.json",
+          "$ref": "enums/history-entry-type.json",
           "description": "Type of task history entry (request, response)"
         },
         "feed-format": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/feed-format.json",
+          "$ref": "enums/feed-format.json",
           "description": "Product catalog feed formats"
         },
         "update-frequency": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/update-frequency.json",
+          "$ref": "enums/update-frequency.json",
           "description": "Frequency of product catalog updates"
         },
         "content-id-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/content-id-type.json",
+          "$ref": "enums/content-id-type.json",
           "description": "Identifier type for matching conversion event content_ids to catalog items (sku, gtin, or vertical-specific IDs)"
         },
         "auth-scheme": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/auth-scheme.json",
+          "$ref": "enums/auth-scheme.json",
           "description": "Authentication schemes for push notifications"
         },
         "creative-sort-field": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/creative-sort-field.json",
+          "$ref": "enums/creative-sort-field.json",
           "description": "Fields available for sorting creative listings"
         },
         "geo-level": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/geo-level.json",
+          "$ref": "enums/geo-level.json",
           "description": "Geographic targeting granularity levels (country, region, metro, postal_area)"
         },
         "metro-system": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/metro-system.json",
+          "$ref": "enums/metro-system.json",
           "description": "Metro area classification systems for geographic targeting (nielsen_dma, uk_itl1, uk_itl2, eurostat_nuts2)"
         },
         "postal-system": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/postal-system.json",
+          "$ref": "enums/postal-system.json",
           "description": "Postal code systems for geographic targeting. System names encode country and precision (us_zip, gb_outward, ca_fsa, etc.)"
         },
         "age-verification-method": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/age-verification-method.json",
+          "$ref": "enums/age-verification-method.json",
           "description": "Methods for verifying user age for compliance (facial_age_estimation, id_document, digital_id, credit_card, world_id)"
         },
         "device-platform": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/device-platform.json",
+          "$ref": "enums/device-platform.json",
           "description": "Operating system platforms for device targeting. Browser values from Sec-CH-UA-Platform standard, extended for CTV"
         },
         "device-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/device-type.json",
+          "$ref": "enums/device-type.json",
           "description": "Device form factor categories for targeting and reporting (desktop, mobile, tablet, ctv, dooh, unknown)"
         },
         "signal-value-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/signal-value-type.json",
+          "$ref": "enums/signal-value-type.json",
           "description": "Signal value types for targeting (binary, categorical, numeric)"
         },
         "signal-source": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/signal-source.json",
+          "$ref": "enums/signal-source.json",
           "description": "Source type for signal identifiers: 'catalog' (verifiable via data provider) or 'agent' (trust-based)"
         },
         "universal-macro": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/universal-macro.json",
+          "$ref": "enums/universal-macro.json",
           "description": "Standardized macro placeholders for dynamic value substitution in creative tracking URLs"
         },
         "event-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/event-type.json",
+          "$ref": "enums/event-type.json",
           "description": "Standard marketing event types for conversion tracking (purchase, lead, add_to_cart, etc.)"
         },
         "uid-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/uid-type.json",
+          "$ref": "enums/uid-type.json",
           "description": "Universal ID types for user matching (rampid, id5, uid2, maid, etc.)"
         },
         "action-source": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/action-source.json",
+          "$ref": "enums/action-source.json",
           "description": "Where the conversion event originated (website, app, offline, etc.)"
         },
         "attribution-model": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/attribution-model.json",
+          "$ref": "enums/attribution-model.json",
           "description": "Attribution model used for conversion measurement"
         },
         "audience-source": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/audience-source.json",
+          "$ref": "enums/audience-source.json",
           "description": "Origin of an audience segment in delivery reporting (synced, platform, third_party, lookalike, retargeting, unknown)"
         },
         "wcag-level": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/wcag-level.json",
+          "$ref": "enums/wcag-level.json",
           "description": "Web Content Accessibility Guidelines conformance level (A, AA, AAA)"
         },
         "catalog-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/catalog-type.json",
+          "$ref": "enums/catalog-type.json",
           "description": "Catalog feed types: offering, product, inventory, store, promotion, hotel, flight, job, vehicle, real_estate, education, destination"
         },
         "catalog-action": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/catalog-action.json",
+          "$ref": "enums/catalog-action.json",
           "description": "Actions taken on catalogs during sync (created, updated, unchanged, failed, deleted)"
         },
         "catalog-item-status": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/catalog-item-status.json",
+          "$ref": "enums/catalog-item-status.json",
           "description": "Approval status of individual catalog items (approved, pending, rejected, warning)"
         },
         "transport-mode": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/transport-mode.json",
+          "$ref": "enums/transport-mode.json",
           "description": "Transportation modes for isochrone-based catchment area calculations (walking, cycling, driving, public_transport)"
         },
         "distance-unit": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/distance-unit.json",
+          "$ref": "enums/distance-unit.json",
           "description": "Units of distance measurement for radius-based catchment areas (km, mi, m)"
         },
         "error-code": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/error-code.json",
+          "$ref": "enums/error-code.json",
           "description": "Standard error code vocabulary for agent recovery classification"
         },
         "consent-basis": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/consent-basis.json",
+          "$ref": "enums/consent-basis.json",
           "description": "GDPR Article 6(1) lawful basis for processing personal data"
         },
         "digital-source-type": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/digital-source-type.json",
+          "$ref": "enums/digital-source-type.json",
           "description": "IPTC-aligned classification of AI involvement in content creation (digital_capture, trained_algorithmic_media, composite_with_trained_algorithmic_media, etc.)"
         },
         "governance-phase": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/governance-phase.json",
+          "$ref": "enums/governance-phase.json",
           "description": "Media buy lifecycle phase for governance checks (purchase, modification, delivery)"
         },
         "governance-domain": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/governance-domain.json",
+          "$ref": "enums/governance-domain.json",
           "description": "Governance sub-domains a registry policy applies to (campaign, property, creative, content_standards)"
         },
         "governance-mode": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/governance-mode.json",
+          "$ref": "enums/governance-mode.json",
           "description": "Operating mode for a governance agent (audit, advisory, enforce)"
         },
         "delegation-authority": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/delegation-authority.json",
+          "$ref": "enums/delegation-authority.json",
           "description": "Authority level for a delegated agent on a campaign plan (full, execute_only, propose_only)"
         },
         "exclusivity": {
-          "$ref": "/schemas/3.0.0-rc.2/enums/exclusivity.json",
+          "$ref": "enums/exclusivity.json",
           "description": "Whether a product offers exclusive access to its inventory (none, category, exclusive)"
         }
       }
@@ -766,39 +765,39 @@
       "description": "Individual pricing model schemas. Discriminated by pricing_model field. If fixed_price is present, it's fixed pricing. If absent, it's auction-based (floor_price and price_guidance optional). Bid-based auction models may also include max_bid as a boolean signal to interpret bid_price as a buyer ceiling instead of an exact honored price.",
       "schemas": {
         "cpm-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpm-option.json",
+          "$ref": "pricing-options/cpm-option.json",
           "description": "Cost Per Mille (CPM) pricing - supports fixed rate and auction modes"
         },
         "vcpm-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/vcpm-option.json",
+          "$ref": "pricing-options/vcpm-option.json",
           "description": "Viewable Cost Per Mille (vCPM) pricing - supports fixed rate and auction modes"
         },
         "cpc-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpc-option.json",
+          "$ref": "pricing-options/cpc-option.json",
           "description": "Cost Per Click (CPC) pricing - supports fixed rate and auction modes"
         },
         "cpcv-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpcv-option.json",
+          "$ref": "pricing-options/cpcv-option.json",
           "description": "Cost Per Completed View (CPCV) pricing - supports fixed rate and auction modes"
         },
         "cpv-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpv-option.json",
+          "$ref": "pricing-options/cpv-option.json",
           "description": "Cost Per View (CPV) pricing with threshold - supports fixed rate and auction modes"
         },
         "cpp-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpp-option.json",
+          "$ref": "pricing-options/cpp-option.json",
           "description": "Cost Per Point (CPP) pricing for TV/audio with demographic measurement - supports fixed rate and auction modes"
         },
         "cpa-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/cpa-option.json",
+          "$ref": "pricing-options/cpa-option.json",
           "description": "Cost Per Acquisition (CPA) pricing for performance campaigns - fixed price per conversion event"
         },
         "flat-rate-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/flat-rate-option.json",
+          "$ref": "pricing-options/flat-rate-option.json",
           "description": "Flat rate pricing for DOOH and sponsorships - supports fixed rate and auction modes"
         },
         "time-option": {
-          "$ref": "/schemas/3.0.0-rc.2/pricing-options/time-option.json",
+          "$ref": "pricing-options/time-option.json",
           "description": "Time-based pricing - cost per time unit (hour, day, week, month) that scales with campaign duration"
         }
       }
@@ -808,41 +807,41 @@
       "tasks": {
         "list-accounts": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/account/list-accounts-request.json",
+            "$ref": "account/list-accounts-request.json",
             "description": "Request parameters for listing accounts accessible to the authenticated agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/account/list-accounts-response.json",
+            "$ref": "account/list-accounts-response.json",
             "description": "Response payload for list_accounts task"
           }
         },
         "sync-accounts": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/account/sync-accounts-request.json",
+            "$ref": "account/sync-accounts-request.json",
             "description": "Request parameters for syncing advertiser accounts with a seller"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/account/sync-accounts-response.json",
+            "$ref": "account/sync-accounts-response.json",
             "description": "Response payload for sync_accounts task"
           }
         },
         "report-usage": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/account/report-usage-request.json",
+            "$ref": "account/report-usage-request.json",
             "description": "Request parameters for reporting vendor service consumption after delivery"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/account/report-usage-response.json",
+            "$ref": "account/report-usage-response.json",
             "description": "Response payload for report_usage task"
           }
         },
         "get-account-financials": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/account/get-account-financials-request.json",
+            "$ref": "account/get-account-financials-request.json",
             "description": "Request parameters for querying financial status of an operator-billed account"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/account/get-account-financials-response.json",
+            "$ref": "account/get-account-financials-response.json",
             "description": "Response payload for get_account_financials task"
           }
         }
@@ -852,122 +851,122 @@
       "description": "Media buy task request/response schemas",
       "supporting-schemas": {
         "package-request": {
-          "$ref": "/schemas/3.0.0-rc.2/media-buy/package-request.json",
+          "$ref": "media-buy/package-request.json",
           "description": "Package configuration for media buy creation - used within create_media_buy request"
         },
         "package-update": {
-          "$ref": "/schemas/3.0.0-rc.2/media-buy/package-update.json",
+          "$ref": "media-buy/package-update.json",
           "description": "Package update configuration for update_media_buy - identifies package and specifies fields to modify"
         }
       },
       "tasks": {
         "get-products": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-products-request.json",
+            "$ref": "media-buy/get-products-request.json",
             "description": "Request parameters for discovering available advertising products"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-products-response.json",
+            "$ref": "media-buy/get-products-response.json",
             "description": "Response payload for get_products task"
           }
         },
         "list-creative-formats": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/list-creative-formats-request.json",
+            "$ref": "media-buy/list-creative-formats-request.json",
             "description": "Request parameters for discovering format IDs and creative agents supported by this sales agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/list-creative-formats-response.json",
+            "$ref": "media-buy/list-creative-formats-response.json",
             "description": "Response payload with format_ids and creative_agents list. Sales agent returns which formats it supports and which creative agents provide those formats. Buyers query creative agents for full format specifications."
           }
         },
         "create-media-buy": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/create-media-buy-request.json",
+            "$ref": "media-buy/create-media-buy-request.json",
             "description": "Request parameters for creating a media buy"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/create-media-buy-response.json",
+            "$ref": "media-buy/create-media-buy-response.json",
             "description": "Response payload for create_media_buy task"
           }
         },
         "update-media-buy": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/update-media-buy-request.json",
+            "$ref": "media-buy/update-media-buy-request.json",
             "description": "Request parameters for updating campaign and package settings"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/update-media-buy-response.json",
+            "$ref": "media-buy/update-media-buy-response.json",
             "description": "Response payload for update_media_buy task"
           }
         },
         "get-media-buys": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-media-buys-request.json",
+            "$ref": "media-buy/get-media-buys-request.json",
             "description": "Request parameters for retrieving media buy status, creative approvals, and delivery snapshots"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-media-buys-response.json",
+            "$ref": "media-buy/get-media-buys-response.json",
             "description": "Response payload for get_media_buys task"
           }
         },
         "get-media-buy-delivery": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-media-buy-delivery-request.json",
+            "$ref": "media-buy/get-media-buy-delivery-request.json",
             "description": "Request parameters for retrieving comprehensive delivery metrics"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/get-media-buy-delivery-response.json",
+            "$ref": "media-buy/get-media-buy-delivery-response.json",
             "description": "Response payload for get_media_buy_delivery task"
           }
         },
         "provide-performance-feedback": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/provide-performance-feedback-request.json",
+            "$ref": "media-buy/provide-performance-feedback-request.json",
             "description": "Request parameters for sharing performance outcomes with publishers"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/provide-performance-feedback-response.json",
+            "$ref": "media-buy/provide-performance-feedback-response.json",
             "description": "Response payload for provide_performance_feedback task"
           }
         },
         "sync-event-sources": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-event-sources-request.json",
+            "$ref": "media-buy/sync-event-sources-request.json",
             "description": "Request parameters for configuring event sources on an account"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-event-sources-response.json",
+            "$ref": "media-buy/sync-event-sources-response.json",
             "description": "Response payload for sync_event_sources task"
           }
         },
         "log-event": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/log-event-request.json",
+            "$ref": "media-buy/log-event-request.json",
             "description": "Request parameters for logging conversion or marketing events"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/log-event-response.json",
+            "$ref": "media-buy/log-event-response.json",
             "description": "Response payload for log_event task"
           }
         },
         "sync-audiences": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-audiences-request.json",
+            "$ref": "media-buy/sync-audiences-request.json",
             "description": "Request parameters for managing CRM-based audiences on an account"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-audiences-response.json",
+            "$ref": "media-buy/sync-audiences-response.json",
             "description": "Response payload for sync_audiences task"
           }
         },
         "sync-catalogs": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-catalogs-request.json",
+            "$ref": "media-buy/sync-catalogs-request.json",
             "description": "Request parameters for syncing catalog feeds (products, inventory, stores, promotions, offerings) with approval workflow"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/sync-catalogs-response.json",
+            "$ref": "media-buy/sync-catalogs-response.json",
             "description": "Response payload for sync_catalogs task with per-catalog results and item-level approval status"
           }
         }
@@ -978,67 +977,67 @@
       "tasks": {
         "build-creative": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/build-creative-request.json",
+            "$ref": "media-buy/build-creative-request.json",
             "description": "Request parameters for AI-powered creative generation"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/media-buy/build-creative-response.json",
+            "$ref": "media-buy/build-creative-response.json",
             "description": "Response payload for build_creative task"
           }
         },
         "preview-creative": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/preview-creative-request.json",
+            "$ref": "creative/preview-creative-request.json",
             "description": "Request parameters for generating creative previews"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/preview-creative-response.json",
+            "$ref": "creative/preview-creative-response.json",
             "description": "Response payload for preview_creative task"
           }
         },
         "list-creative-formats": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/list-creative-formats-request.json",
+            "$ref": "creative/list-creative-formats-request.json",
             "description": "Request parameters for discovering creative formats from this creative agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/list-creative-formats-response.json",
+            "$ref": "creative/list-creative-formats-response.json",
             "description": "Response payload with full format definitions - this is the authoritative source for format specifications"
           }
         },
         "get-creative-delivery": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/get-creative-delivery-request.json",
+            "$ref": "creative/get-creative-delivery-request.json",
             "description": "Request parameters for retrieving creative delivery data with variant-level breakdowns"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/get-creative-delivery-response.json",
+            "$ref": "creative/get-creative-delivery-response.json",
             "description": "Response payload with creative delivery data including variant manifests and metrics"
           }
         },
         "list-creatives": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/list-creatives-request.json",
+            "$ref": "creative/list-creatives-request.json",
             "description": "Request parameters for querying creative library with filtering and pagination"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/list-creatives-response.json",
+            "$ref": "creative/list-creatives-response.json",
             "description": "Response payload for list_creatives task"
           }
         },
         "sync-creatives": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/sync-creatives-request.json",
+            "$ref": "creative/sync-creatives-request.json",
             "description": "Request parameters for syncing creative assets with upsert semantics"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/sync-creatives-response.json",
+            "$ref": "creative/sync-creatives-response.json",
             "description": "Response payload for sync_creatives task"
           }
         }
       },
       "asset_types": {
-        "$ref": "/schemas/3.0.0-rc.2/creative/asset-types/index.json",
+        "$ref": "creative/asset-types/index.json",
         "description": "Asset type definitions for creative manifests"
       }
     },
@@ -1047,21 +1046,21 @@
       "tasks": {
         "get-signals": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/signals/get-signals-request.json",
+            "$ref": "signals/get-signals-request.json",
             "description": "Request parameters for discovering signals based on description"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/signals/get-signals-response.json",
+            "$ref": "signals/get-signals-response.json",
             "description": "Response payload for get_signals task"
           }
         },
         "activate-signal": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/signals/activate-signal-request.json",
+            "$ref": "signals/activate-signal-request.json",
             "description": "Request parameters for activating a signal on a specific platform/account"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/signals/activate-signal-response.json",
+            "$ref": "signals/activate-signal-response.json",
             "description": "Response payload for activate_signal task"
           }
         }
@@ -1071,226 +1070,226 @@
       "description": "Governance protocol for property governance, brand standards, content standards, and compliance",
       "supporting-schemas": {
         "property-feature-definition": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-feature-definition.json",
+          "$ref": "property/property-feature-definition.json",
           "description": "Definition of a feature that a governance agent can evaluate"
         },
         "property-feature": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-feature.json",
+          "$ref": "property/property-feature.json",
           "description": "A discrete feature assessment for a property"
         },
         "feature-requirement": {
-          "$ref": "/schemas/3.0.0-rc.2/property/feature-requirement.json",
+          "$ref": "property/feature-requirement.json",
           "description": "A feature-based requirement for property filtering"
         },
         "property-error": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-error.json",
+          "$ref": "property/property-error.json",
           "description": "Error information for a property that could not be evaluated"
         },
         "property-list": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-list.json",
+          "$ref": "property/property-list.json",
           "description": "A managed property list with optional filters for dynamic evaluation"
         },
         "property-list-filters": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-list-filters.json",
+          "$ref": "property/property-list-filters.json",
           "description": "Filters that dynamically modify a property list when resolved"
         },
         "property-list-changed-webhook": {
-          "$ref": "/schemas/3.0.0-rc.2/property/property-list-changed-webhook.json",
+          "$ref": "property/property-list-changed-webhook.json",
           "description": "Webhook payload when a property list changes"
         },
         "base-property-source": {
-          "$ref": "/schemas/3.0.0-rc.2/property/base-property-source.json",
+          "$ref": "property/base-property-source.json",
           "description": "A source of properties for a property list - supports publisher+tags, publisher+property_ids, or direct identifiers"
         },
         "content-standards": {
-          "$ref": "/schemas/3.0.0-rc.2/content-standards/content-standards.json",
+          "$ref": "content-standards/content-standards.json",
           "description": "Reusable content standards configuration - defines brand safety/suitability policies with scope, policy, calibration exemplars, and lifecycle dates"
         },
         "content-standards-artifact": {
-          "$ref": "/schemas/3.0.0-rc.2/content-standards/artifact.json",
+          "$ref": "content-standards/artifact.json",
           "description": "Content artifact for evaluation or calibration - represents content context where ad placements occur, identified by property_id + artifact_id"
         },
         "artifact-webhook-payload": {
-          "$ref": "/schemas/3.0.0-rc.2/content-standards/artifact-webhook-payload.json",
+          "$ref": "content-standards/artifact-webhook-payload.json",
           "description": "Webhook payload for content artifact delivery from sales agents to orchestrators"
         },
         "policy-entry": {
-          "$ref": "/schemas/3.0.0-rc.2/governance/policy-entry.json",
+          "$ref": "governance/policy-entry.json",
           "description": "A complete policy in the policy registry with natural language text, metadata, and calibration exemplars"
         },
         "policy-ref": {
-          "$ref": "/schemas/3.0.0-rc.2/governance/policy-ref.json",
+          "$ref": "governance/policy-ref.json",
           "description": "Reference to a registry policy by ID with optional version pin"
         }
       },
       "tasks": {
         "create-property-list": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/property/create-property-list-request.json",
+            "$ref": "property/create-property-list-request.json",
             "description": "Request parameters for creating a new property list"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/property/create-property-list-response.json",
+            "$ref": "property/create-property-list-response.json",
             "description": "Response payload for create_property_list task"
           }
         },
         "update-property-list": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/property/update-property-list-request.json",
+            "$ref": "property/update-property-list-request.json",
             "description": "Request parameters for updating an existing property list"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/property/update-property-list-response.json",
+            "$ref": "property/update-property-list-response.json",
             "description": "Response payload for update_property_list task"
           }
         },
         "get-property-list": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/property/get-property-list-request.json",
+            "$ref": "property/get-property-list-request.json",
             "description": "Request parameters for retrieving a property list with resolved properties"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/property/get-property-list-response.json",
+            "$ref": "property/get-property-list-response.json",
             "description": "Response payload for get_property_list task"
           }
         },
         "list-property-lists": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/property/list-property-lists-request.json",
+            "$ref": "property/list-property-lists-request.json",
             "description": "Request parameters for listing property lists"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/property/list-property-lists-response.json",
+            "$ref": "property/list-property-lists-response.json",
             "description": "Response payload for list_property_lists task"
           }
         },
         "delete-property-list": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/property/delete-property-list-request.json",
+            "$ref": "property/delete-property-list-request.json",
             "description": "Request parameters for deleting a property list"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/property/delete-property-list-response.json",
+            "$ref": "property/delete-property-list-response.json",
             "description": "Response payload for delete_property_list task"
           }
         },
         "list-content-standards": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/list-content-standards-request.json",
+            "$ref": "content-standards/list-content-standards-request.json",
             "description": "Request parameters for listing content standards configurations"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/list-content-standards-response.json",
+            "$ref": "content-standards/list-content-standards-response.json",
             "description": "Response payload with list of content standards configurations"
           }
         },
         "get-content-standards": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/get-content-standards-request.json",
+            "$ref": "content-standards/get-content-standards-request.json",
             "description": "Request parameters for retrieving a specific standards configuration"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/get-content-standards-response.json",
+            "$ref": "content-standards/get-content-standards-response.json",
             "description": "Response payload with full standards configuration including policy and calibration data"
           }
         },
         "create-content-standards": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/create-content-standards-request.json",
+            "$ref": "content-standards/create-content-standards-request.json",
             "description": "Request parameters for creating a new content standards configuration"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/create-content-standards-response.json",
+            "$ref": "content-standards/create-content-standards-response.json",
             "description": "Response payload with new standards_id"
           }
         },
         "update-content-standards": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/update-content-standards-request.json",
+            "$ref": "content-standards/update-content-standards-request.json",
             "description": "Request parameters for updating an existing content standards configuration"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/update-content-standards-response.json",
+            "$ref": "content-standards/update-content-standards-response.json",
             "description": "Response payload confirming update"
           }
         },
         "calibrate-content": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/calibrate-content-request.json",
+            "$ref": "content-standards/calibrate-content-request.json",
             "description": "Request parameters for collaborative calibration dialogue"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/calibrate-content-response.json",
+            "$ref": "content-standards/calibrate-content-response.json",
             "description": "Response payload with detailed explanations for policy alignment"
           }
         },
         "validate-content-delivery": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/validate-content-delivery-request.json",
+            "$ref": "content-standards/validate-content-delivery-request.json",
             "description": "Request parameters for batch validating delivery records"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/validate-content-delivery-response.json",
+            "$ref": "content-standards/validate-content-delivery-response.json",
             "description": "Response payload with batch validation results"
           }
         },
         "get-media-buy-artifacts": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/get-media-buy-artifacts-request.json",
+            "$ref": "content-standards/get-media-buy-artifacts-request.json",
             "description": "Request parameters for retrieving content artifacts from a media buy"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/content-standards/get-media-buy-artifacts-response.json",
+            "$ref": "content-standards/get-media-buy-artifacts-response.json",
             "description": "Response payload with content artifacts for validation"
           }
         },
         "get-creative-features": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/get-creative-features-request.json",
+            "$ref": "creative/get-creative-features-request.json",
             "description": "Request parameters for evaluating creative features from a governance agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/creative/get-creative-features-response.json",
+            "$ref": "creative/get-creative-features-response.json",
             "description": "Response payload with feature values for the evaluated creative"
           }
         },
         "sync-plans": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/sync-plans-request.json",
+            "$ref": "governance/sync-plans-request.json",
             "description": "Push campaign plans to the governance agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/sync-plans-response.json",
+            "$ref": "governance/sync-plans-response.json",
             "description": "Sync result with active validation categories and resolved policies per plan"
           }
         },
         "report-plan-outcome": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/report-plan-outcome-request.json",
+            "$ref": "governance/report-plan-outcome-request.json",
             "description": "Report the outcome of an action to the governance agent"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/report-plan-outcome-response.json",
+            "$ref": "governance/report-plan-outcome-response.json",
             "description": "Outcome acceptance status with budget impact and findings"
           }
         },
         "get-plan-audit-logs": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/get-plan-audit-logs-request.json",
+            "$ref": "governance/get-plan-audit-logs-request.json",
             "description": "Retrieve governance state and audit trail for a plan"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/get-plan-audit-logs-response.json",
+            "$ref": "governance/get-plan-audit-logs-response.json",
             "description": "Plan state with budget tracking, validation history, and compliance summary"
           }
         },
         "check-governance": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/check-governance-request.json",
+            "$ref": "governance/check-governance-request.json",
             "description": "Orchestrator or seller calls the governance agent to validate an action against the campaign plan"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/governance/check-governance-response.json",
+            "$ref": "governance/check-governance-response.json",
             "description": "Governance decision with findings and conditions"
           }
         }
@@ -1301,11 +1300,11 @@
       "tasks": {
         "get-adcp-capabilities": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/protocol/get-adcp-capabilities-request.json",
+            "$ref": "protocol/get-adcp-capabilities-request.json",
             "description": "Request parameters for cross-protocol capability discovery"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/protocol/get-adcp-capabilities-response.json",
+            "$ref": "protocol/get-adcp-capabilities-response.json",
             "description": "Response payload for get_adcp_capabilities task - includes AdCP version, supported protocols, and protocol-specific capabilities (media_buy, signals, etc.)"
           }
         }
@@ -1315,56 +1314,56 @@
       "description": "Sponsored Intelligence Protocol for conversational brand experiences in AI assistants",
       "supporting-schemas": {
         "si-capabilities": {
-          "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-capabilities.json",
+          "$ref": "sponsored-intelligence/si-capabilities.json",
           "description": "Capability categories that brand or host can support (modalities, components, commerce)"
         },
         "si-identity": {
-          "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-identity.json",
+          "$ref": "sponsored-intelligence/si-identity.json",
           "description": "User identity with explicit consent for personalized brand experiences"
         },
         "si-ui-element": {
-          "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-ui-element.json",
+          "$ref": "sponsored-intelligence/si-ui-element.json",
           "description": "Standard visual components (text, link, image, product_card, carousel, action_button, app_handoff)"
         }
       },
       "tasks": {
         "si-get-offering": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-get-offering-request.json",
+            "$ref": "sponsored-intelligence/si-get-offering-request.json",
             "description": "Get offering details, availability, and optionally matching products before session handoff"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-get-offering-response.json",
+            "$ref": "sponsored-intelligence/si-get-offering-response.json",
             "description": "Offering details, availability status, matching products, and token for session correlation"
           }
         },
         "si-initiate-session": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-initiate-session-request.json",
+            "$ref": "sponsored-intelligence/si-initiate-session-request.json",
             "description": "Host initiates SI session with brand agent - includes context, identity, and capability negotiation"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-initiate-session-response.json",
+            "$ref": "sponsored-intelligence/si-initiate-session-response.json",
             "description": "Brand agent's response with session ID, initial message, UI elements, and negotiated capabilities"
           }
         },
         "si-send-message": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-send-message-request.json",
+            "$ref": "sponsored-intelligence/si-send-message-request.json",
             "description": "Send a message within an active SI session"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-send-message-response.json",
+            "$ref": "sponsored-intelligence/si-send-message-response.json",
             "description": "Brand agent's response to the message, including session status and potential handoff"
           }
         },
         "si-terminate-session": {
           "request": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-terminate-session-request.json",
+            "$ref": "sponsored-intelligence/si-terminate-session-request.json",
             "description": "Terminate an SI session with reason (handoff_transaction, handoff_complete, user_exit, session_timeout, host_terminated)"
           },
           "response": {
-            "$ref": "/schemas/3.0.0-rc.2/sponsored-intelligence/si-terminate-session-response.json",
+            "$ref": "sponsored-intelligence/si-terminate-session-response.json",
             "description": "Termination confirmation with optional ACP handoff or follow-up data"
           }
         }
@@ -1372,13 +1371,13 @@
     },
     "adagents": {
       "description": "Agent authorization file format specification for publishers and data providers",
-      "$ref": "/schemas/3.0.0-rc.2/adagents.json",
+      "$ref": "adagents.json",
       "file_location": "/.well-known/adagents.json",
       "purpose": "Declares authorized agents. Publishers use it for sales agent authorization over properties. Data providers use it to publish signal catalogs and authorize signals agents to resell their data."
     },
     "brand": {
       "description": "Brand identity claim file format specification",
-      "$ref": "/schemas/3.0.0-rc.2/brand.json",
+      "$ref": "brand.json",
       "file_location": "/.well-known/brand.json",
       "purpose": "Declares brand identity and agent for a domain, enabling brand discovery and verification"
     },
@@ -1386,31 +1385,31 @@
       "description": "Brand protocol schemas for identity retrieval, rights discovery, and rights acquisition",
       "schemas": {
         "get-brand-identity-request": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/get-brand-identity-request.json",
+          "$ref": "brand/get-brand-identity-request.json",
           "description": "Request brand identity data from a brand agent"
         },
         "get-brand-identity-response": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/get-brand-identity-response.json",
+          "$ref": "brand/get-brand-identity-response.json",
           "description": "Brand identity data response"
         },
         "get-rights-request": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/get-rights-request.json",
+          "$ref": "brand/get-rights-request.json",
           "description": "Search for licensable rights with pricing"
         },
         "get-rights-response": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/get-rights-response.json",
+          "$ref": "brand/get-rights-response.json",
           "description": "Matching rights with pricing options"
         },
         "acquire-rights-request": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/acquire-rights-request.json",
+          "$ref": "brand/acquire-rights-request.json",
           "description": "Acquire rights with contractual clearance"
         },
         "acquire-rights-response": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/acquire-rights-response.json",
+          "$ref": "brand/acquire-rights-response.json",
           "description": "Rights acquisition result with terms and generation credentials"
         },
         "rights-pricing-option": {
-          "$ref": "/schemas/3.0.0-rc.2/brand/rights-pricing-option.json",
+          "$ref": "brand/rights-pricing-option.json",
           "description": "Pricing option for licensable rights"
         }
       }
@@ -1418,11 +1417,11 @@
     "extensions": {
       "description": "Typed extension schemas for vendor-specific or domain-specific data. Extensions define the structure of data within the ext.{namespace} field. Agents declare which extensions they support in their agent card.",
       "registry": {
-        "$ref": "/schemas/3.0.0-rc.2/extensions/index.json",
+        "$ref": "extensions/index.json",
         "description": "Auto-generated registry of all available extensions with metadata"
       },
       "meta": {
-        "$ref": "/schemas/3.0.0-rc.2/extensions/extension-meta.json",
+        "$ref": "extensions/extension-meta.json",
         "description": "Schema that all extension files must follow. Defines valid_from, valid_until, and extension data structure."
       },
       "schemas": {}
diff --git a/schemas/cache/media-buy/build-creative-async-response-input-required.json b/schemas/cache/media-buy/build-creative-async-response-input-required.json
index 15c740ace..9f7f82418 100644
--- a/schemas/cache/media-buy/build-creative-async-response-input-required.json
+++ b/schemas/cache/media-buy/build-creative-async-response-input-required.json
@@ -1,32 +1,31 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Build Creative - Input Required",
   "description": "Payload when build_creative is paused waiting for user input. May occur during generation when the agent needs creative direction, or when brand guidelines require approval.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
-    "errors": {
-      "description": "Optional validation errors or warnings explaining why input is required.",
-      "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
-      },
-      "type": "array"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
     "reason": {
-      "description": "Reason code indicating why input is needed",
+      "type": "string",
       "enum": [
         "APPROVAL_REQUIRED",
         "CREATIVE_DIRECTION_NEEDED",
         "ASSET_SELECTION_NEEDED"
       ],
-      "type": "string"
+      "description": "Reason code indicating why input is needed"
+    },
+    "errors": {
+      "type": "array",
+      "description": "Optional validation errors or warnings explaining why input is required.",
+      "items": {
+        "$ref": "../core/error.json"
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Build Creative - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/build-creative-async-response-submitted.json b/schemas/cache/media-buy/build-creative-async-response-submitted.json
index 90306f206..ffe2a24bf 100644
--- a/schemas/cache/media-buy/build-creative-async-response-submitted.json
+++ b/schemas/cache/media-buy/build-creative-async-response-submitted.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Build Creative - Submitted",
   "description": "Payload acknowledging the build_creative task is queued.",
+  "type": "object",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Build Creative - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/build-creative-async-response-working.json b/schemas/cache/media-buy/build-creative-async-response-working.json
index 751a3a9d3..674a409a9 100644
--- a/schemas/cache/media-buy/build-creative-async-response-working.json
+++ b/schemas/cache/media-buy/build-creative-async-response-working.json
@@ -1,36 +1,35 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/build-creative-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Build Creative - Working",
   "description": "Progress payload for active build_creative task. Returned during AI generation, format transformation, or complex library retrieval with macro resolution.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "percentage": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 100,
+      "description": "Completion percentage (0-100)"
     },
     "current_step": {
-      "description": "Current step or phase of the operation (e.g., 'generating_assets', 'resolving_macros', 'rendering_preview')",
-      "type": "string"
+      "type": "string",
+      "description": "Current step or phase of the operation (e.g., 'generating_assets', 'resolving_macros', 'rendering_preview')"
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
-    "percentage": {
-      "description": "Completion percentage (0-100)",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+    "total_steps": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Total number of steps in the operation"
     },
     "step_number": {
-      "description": "Current step number",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Current step number"
     },
-    "total_steps": {
-      "description": "Total number of steps in the operation",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Build Creative - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/build-creative-request.json b/schemas/cache/media-buy/build-creative-request.json
index 5a115626b..7038ddf53 100644
--- a/schemas/cache/media-buy/build-creative-request.json
+++ b/schemas/cache/media-buy/build-creative-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/build-creative-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request to transform, generate, or retrieve a creative manifest. Supports three modes: (1) generation from a brief or seed assets, (2) transformation of an existing manifest, (3) retrieval from a creative library by creative_id. Produces target manifest(s) in the specified format(s). Provide either target_format_id for a single format or target_format_ids for multiple formats.",
   "properties": {
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand reference for creative generation. Resolved to full brand identity (colors, logos, tone) at execution time."
     },
     "concept_id": {
@@ -13,18 +12,18 @@
       "type": "string"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_id": {
       "description": "Reference to a creative in the agent's library. The creative agent resolves this to a manifest from its library. Use this instead of creative_manifest when retrieving an existing creative for tag generation or format adaptation.",
       "type": "string"
     },
     "creative_manifest": {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+      "$ref": "../core/creative-manifest.json",
       "description": "Creative manifest to transform or generate from. For pure generation, this should include the target format_id and any required input assets. For transformation (e.g., resizing, reformatting), this is the complete creative to adapt. When creative_id is provided, the agent resolves the creative from its library and this field is ignored."
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. Prevents duplicate creative generation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -90,26 +89,26 @@
       "type": "array"
     },
     "preview_output_format": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/preview-output-format.json",
+      "$ref": "../enums/preview-output-format.json",
       "default": "url",
       "description": "Output format for preview renders when include_preview is true. 'url' returns preview_url (iframe-embeddable URL), 'html' returns preview_html (raw HTML). Ignored when include_preview is false or omitted."
     },
     "preview_quality": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
+      "$ref": "../enums/creative-quality.json",
       "description": "Render quality for inline preview when include_preview is true. 'draft' produces fast, lower-fidelity renderings. 'production' produces full-quality renderings. Independent of the build quality parameter \u2014 you can build at draft quality and preview at production quality, or vice versa. If omitted, the creative agent uses its own default. Ignored when include_preview is false or omitted."
     },
     "quality": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/creative-quality.json",
+      "$ref": "../enums/creative-quality.json",
       "description": "Quality tier for generation. 'draft' produces fast, lower-fidelity output for iteration and review. 'production' produces full-quality output for final delivery. If omitted, the creative agent uses its own default. For non-generative transforms (e.g., format resizing), creative agents MAY ignore this field."
     },
     "target_format_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+      "$ref": "../core/format-id.json",
       "description": "Single format ID to generate. Mutually exclusive with target_format_ids. The format definition specifies required input assets and output structure."
     },
     "target_format_ids": {
       "description": "Array of format IDs to generate in a single call. Mutually exclusive with target_format_id. The creative agent produces one manifest per format. Each format definition specifies its own required input assets and output structure.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/media-buy/build-creative-response.json b/schemas/cache/media-buy/build-creative-response.json
index 0bbdb69a6..8172e9c61 100644
--- a/schemas/cache/media-buy/build-creative-response.json
+++ b/schemas/cache/media-buy/build-creative-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/build-creative-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response containing the transformed or generated creative manifest(s), ready for use with preview_creative or sync_creatives. Returns either a single creative_manifest, an array of creative_manifests (for multi-format requests), or error information.",
   "oneOf": [
@@ -8,10 +7,10 @@
       "description": "Single-format success response. Returned when the request used target_format_id.",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_manifest": {
-          "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+          "$ref": "../core/creative-manifest.json",
           "description": "The generated or transformed creative manifest"
         },
         "expires_at": {
@@ -20,7 +19,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "preview": {
           "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains the same content fields as a preview_creative single response (previews, interactive_url, expires_at) minus the response_type discriminator, so clients can reuse the same preview rendering logic.",
@@ -71,7 +70,7 @@
                   "renders": {
                     "description": "Array of rendered pieces for this preview variant. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/creative/preview-render.json"
+                      "$ref": "../creative/preview-render.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -95,7 +94,7 @@
           "type": "object"
         },
         "preview_error": {
-          "$ref": "/schemas/3.0.0-rc.3/core/error.json",
+          "$ref": "../core/error.json",
           "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Distinguishes 'agent does not support inline preview' (preview and preview_error both absent) from 'preview generation failed' (preview absent, preview_error present). Omitted when preview succeeded or was not requested."
         },
         "sandbox": {
@@ -114,12 +113,12 @@
       "description": "Multi-format success response. Returned when the request used target_format_ids. Contains one manifest per requested format. Multi-format requests are atomic \u2014 all formats must succeed or the entire request fails with an error response. Array order corresponds to the target_format_ids request order.",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_manifests": {
           "description": "Array of generated creative manifests, one per requested format. Each manifest contains its own format_id identifying which format it was generated for.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json"
+            "$ref": "../core/creative-manifest.json"
           },
           "minItems": 1,
           "type": "array"
@@ -130,7 +129,7 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "preview": {
           "description": "Preview renders included when the request set include_preview to true and the agent supports it. Contains one default preview per requested format. preview_inputs is ignored for multi-format requests.",
@@ -150,7 +149,7 @@
               "items": {
                 "properties": {
                   "format_id": {
-                    "$ref": "/schemas/3.0.0-rc.3/core/format-id.json",
+                    "$ref": "../core/format-id.json",
                     "description": "The format this preview was generated for. Matches one of the requested target_format_ids."
                   },
                   "input": {
@@ -185,7 +184,7 @@
                   "renders": {
                     "description": "Array of rendered pieces for this format's preview. Most formats render as a single piece. Companion ad formats render as multiple pieces.",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/creative/preview-render.json"
+                      "$ref": "../creative/preview-render.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -210,7 +209,7 @@
           "type": "object"
         },
         "preview_error": {
-          "$ref": "/schemas/3.0.0-rc.3/core/error.json",
+          "$ref": "../core/error.json",
           "description": "When include_preview was true in the request but preview generation failed. Uses the standard error structure with code, message, and recovery classification. Omitted when preview succeeded or was not requested."
         },
         "sandbox": {
@@ -229,18 +228,18 @@
       "description": "Error response - creative generation failed",
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Array of errors explaining why creative generation failed",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/create-media-buy-async-response-input-required.json b/schemas/cache/media-buy/create-media-buy-async-response-input-required.json
index f7e5b48b7..d6ac6603c 100644
--- a/schemas/cache/media-buy/create-media-buy-async-response-input-required.json
+++ b/schemas/cache/media-buy/create-media-buy-async-response-input-required.json
@@ -1,31 +1,30 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Create Media Buy - Input Required",
   "description": "Payload when task is paused waiting for user input or approval.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "reason": {
+      "type": "string",
+      "enum": [
+        "APPROVAL_REQUIRED",
+        "BUDGET_EXCEEDS_LIMIT"
+      ],
+      "description": "Reason code indicating why input is needed"
     },
     "errors": {
+      "type": "array",
       "description": "Optional validation errors or warnings for debugging purposes. Helps explain why input is required.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
-      },
-      "type": "array"
+        "$ref": "../core/error.json"
+      }
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "reason": {
-      "description": "Reason code indicating why input is needed",
-      "enum": [
-        "APPROVAL_REQUIRED",
-        "BUDGET_EXCEEDS_LIMIT"
-      ],
-      "type": "string"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Create Media Buy - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/create-media-buy-async-response-submitted.json b/schemas/cache/media-buy/create-media-buy-async-response-submitted.json
index c1e867811..4531f8776 100644
--- a/schemas/cache/media-buy/create-media-buy-async-response-submitted.json
+++ b/schemas/cache/media-buy/create-media-buy-async-response-submitted.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Create Media Buy - Submitted",
   "description": "Payload acknowledging the task is queued. Usually empty or just context.",
+  "type": "object",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Create Media Buy - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/create-media-buy-async-response-working.json b/schemas/cache/media-buy/create-media-buy-async-response-working.json
index 71ba707f1..bf4428690 100644
--- a/schemas/cache/media-buy/create-media-buy-async-response-working.json
+++ b/schemas/cache/media-buy/create-media-buy-async-response-working.json
@@ -1,36 +1,35 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Create Media Buy - Working",
   "description": "Progress payload for active create_media_buy task.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "percentage": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 100,
+      "description": "Completion percentage (0-100)"
     },
     "current_step": {
-      "description": "Current step or phase of the operation",
-      "type": "string"
+      "type": "string",
+      "description": "Current step or phase of the operation"
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
-    "percentage": {
-      "description": "Completion percentage (0-100)",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+    "total_steps": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Total number of steps in the operation"
     },
     "step_number": {
-      "description": "Current step number",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Current step number"
     },
-    "total_steps": {
-      "description": "Total number of steps in the operation",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Create Media Buy - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/create-media-buy-request.json b/schemas/cache/media-buy/create-media-buy-request.json
index 3fb6f33e7..5043bb783 100644
--- a/schemas/cache/media-buy/create-media-buy-request.json
+++ b/schemas/cache/media-buy/create-media-buy-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "dependencies": {
@@ -10,11 +9,11 @@
   "description": "Request parameters for creating a media buy. Supports two modes: (1) Manual mode - provide packages array with explicit line item configurations, or (2) Proposal mode - provide proposal_id and total_budget to execute a proposal from get_products. One of packages or proposal_id must be provided.",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account to bill for this media buy. Pass a natural key (brand, operator, optional sandbox) or a seller-assigned account_id from list_accounts."
     },
     "advertiser_industry": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/advertiser-industry.json",
+      "$ref": "../enums/advertiser-industry.json",
       "description": "Industry classification for this specific campaign. A brand may operate across multiple industries (brand.json industries field), but each media buy targets one. For example, a consumer health company running a wellness campaign sends 'healthcare.wellness', not 'cpg'. Sellers map this to platform-native codes (e.g., Spotify ADV categories, LinkedIn industry IDs). When omitted, sellers may infer from the brand manifest's industries field."
     },
     "artifact_webhook": {
@@ -34,7 +33,7 @@
             "schemes": {
               "description": "Array of authentication schemes. Supported: ['Bearer'] for simple token auth, ['HMAC-SHA256'] for signature verification (recommended for production)",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/auth-scheme.json"
+                "$ref": "../enums/auth-scheme.json"
               },
               "maxItems": 1,
               "minItems": 1,
@@ -88,11 +87,11 @@
       "type": "object"
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand reference for this media buy. Resolved to full brand identity at execution time from brand.json or the registry."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "end_time": {
       "description": "Campaign end date/time in ISO 8601 format",
@@ -100,7 +99,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. If a request with the same idempotency_key and account has already been processed, the seller returns the existing media buy rather than creating a duplicate. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -109,7 +108,7 @@
       "type": "string"
     },
     "invoice_recipient": {
-      "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+      "$ref": "../core/business-entity.json",
       "description": "Override the account's default billing entity for this specific buy. When provided, the seller invoices this entity instead. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
     },
     "io_acceptance": {
@@ -146,7 +145,7 @@
     "packages": {
       "description": "Array of package configurations. Required when not using proposal_id. When executing a proposal, this can be omitted and packages will be derived from the proposal's allocations.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/media-buy/package-request.json"
+        "$ref": "package-request.json"
       },
       "minItems": 1,
       "type": "array"
@@ -164,15 +163,15 @@
       "type": "string"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Optional webhook configuration for async task status notifications. Publisher will send webhooks when status changes (working, input-required, completed, failed). The client generates an operation_id and embeds it in the URL before sending \u2014 the publisher echoes it back in webhook payloads for correlation."
     },
     "reporting_webhook": {
-      "$ref": "/schemas/3.0.0-rc.3/core/reporting-webhook.json",
+      "$ref": "../core/reporting-webhook.json",
       "description": "Optional webhook configuration for automated reporting delivery"
     },
     "start_time": {
-      "$ref": "/schemas/3.0.0-rc.3/core/start-timing.json"
+      "$ref": "../core/start-timing.json"
     },
     "total_budget": {
       "additionalProperties": false,
diff --git a/schemas/cache/media-buy/create-media-buy-response.json b/schemas/cache/media-buy/create-media-buy-response.json
index d00318a69..12fec7e7a 100644
--- a/schemas/cache/media-buy/create-media-buy-response.json
+++ b/schemas/cache/media-buy/create-media-buy-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/create-media-buy-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for create_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the media buy is either fully created or not created at all.",
   "oneOf": [
@@ -13,7 +12,7 @@
       },
       "properties": {
         "account": {
-          "$ref": "/schemas/3.0.0-rc.3/core/account.json",
+          "$ref": "../core/account.json",
           "description": "Account billed for this media buy. Includes advertiser, billing proxy (if any), and rate card applied."
         },
         "confirmed_at": {
@@ -22,7 +21,7 @@
           "type": "string"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "creative_deadline": {
           "description": "ISO 8601 timestamp for creative upload deadline",
@@ -30,10 +29,10 @@
           "type": "string"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "invoice_recipient": {
-          "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+          "$ref": "../core/business-entity.json",
           "description": "Per-buy invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
         },
         "media_buy_id": {
@@ -43,12 +42,12 @@
         "packages": {
           "description": "Array of created packages with complete state information",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/package.json"
+            "$ref": "../core/package.json"
           },
           "type": "array"
         },
         "planned_delivery": {
-          "$ref": "/schemas/3.0.0-rc.3/core/planned-delivery.json",
+          "$ref": "../core/planned-delivery.json",
           "description": "The seller's interpreted delivery parameters. Describes what the seller will actually run -- geo, channels, flight dates, frequency caps, and budget. Present when the account has governance_agents or when the seller chooses to provide delivery transparency."
         },
         "revision": {
@@ -61,7 +60,7 @@
           "type": "boolean"
         },
         "status": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json",
+          "$ref": "../enums/media-buy-status.json",
           "description": "Initial media buy status. Either 'active' (immediate activation) or 'pending_activation' (awaiting platform setup)."
         },
         "valid_actions": {
@@ -113,18 +112,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Array of errors explaining why the operation failed",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/get-media-buy-delivery-request.json b/schemas/cache/media-buy/get-media-buy-delivery-request.json
index 6894cb51d..23e69bbdf 100644
--- a/schemas/cache/media-buy/get-media-buy-delivery-request.json
+++ b/schemas/cache/media-buy/get-media-buy-delivery-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-media-buy-delivery-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for retrieving comprehensive delivery metrics",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Filter delivery data to a specific account. When omitted, returns data across all accessible accounts."
     },
     "attribution_window": {
@@ -13,13 +12,13 @@
       "description": "Attribution window to apply for conversion metrics. When provided, the seller returns conversion data using the requested lookback windows instead of their platform default. The seller echoes the applied window in the response. Sellers that do not support configurable windows ignore this field and return their default. Check get_adcp_capabilities conversion_tracking.attribution_windows for available options.",
       "properties": {
         "model": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/attribution-model.json",
+          "$ref": "../enums/attribution-model.json",
           "description": "Attribution model to use. When omitted, the seller applies their default model."
         },
         "post_click": {
           "allOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+              "$ref": "../core/duration.json"
             }
           ],
           "description": "Post-click attribution window to apply."
@@ -27,7 +26,7 @@
         "post_view": {
           "allOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+              "$ref": "../core/duration.json"
             }
           ],
           "description": "Post-view attribution window to apply."
@@ -36,7 +35,7 @@
       "type": "object"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "end_date": {
       "description": "End date for reporting period (YYYY-MM-DD). When omitted along with start_date, returns campaign lifetime data. Only accepted when the product's reporting_capabilities.date_range_support is 'date_range'.",
@@ -44,7 +43,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "include_package_daily_breakdown": {
       "default": false,
@@ -74,7 +73,7 @@
               "type": "integer"
             },
             "sort_by": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
+              "$ref": "../enums/sort-metric.json",
               "default": "spend",
               "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
             }
@@ -91,7 +90,7 @@
               "type": "integer"
             },
             "sort_by": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
+              "$ref": "../enums/sort-metric.json",
               "default": "spend",
               "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
             }
@@ -108,7 +107,7 @@
               "type": "integer"
             },
             "sort_by": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
+              "$ref": "../enums/sort-metric.json",
               "default": "spend",
               "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
             }
@@ -120,7 +119,7 @@
           "description": "Request geographic breakdown. Check reporting_capabilities.supports_geo_breakdown for available levels and systems.",
           "properties": {
             "geo_level": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/geo-level.json",
+              "$ref": "../enums/geo-level.json",
               "description": "Geographic granularity level for the breakdown"
             },
             "limit": {
@@ -130,7 +129,7 @@
               "type": "integer"
             },
             "sort_by": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
+              "$ref": "../enums/sort-metric.json",
               "default": "spend",
               "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
             },
@@ -138,10 +137,10 @@
               "description": "Classification system for metro or postal_area levels (e.g., 'nielsen_dma', 'us_zip'). Required when geo_level is 'metro' or 'postal_area'.",
               "oneOf": [
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json"
+                  "$ref": "../enums/metro-system.json"
                 },
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/postal-system.json"
+                  "$ref": "../enums/postal-system.json"
                 }
               ]
             }
@@ -162,7 +161,7 @@
               "type": "integer"
             },
             "sort_by": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/sort-metric.json",
+              "$ref": "../enums/sort-metric.json",
               "default": "spend",
               "description": "Metric to sort breakdown rows by (descending). Falls back to 'spend' if the seller does not report the requested metric."
             }
@@ -181,11 +180,11 @@
       "description": "Filter by status. Can be a single status or array of statuses",
       "oneOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+          "$ref": "../enums/media-buy-status.json"
         },
         {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+            "$ref": "../enums/media-buy-status.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/media-buy/get-media-buy-delivery-response.json b/schemas/cache/media-buy/get-media-buy-delivery-response.json
index 8a4b2fadc..889667ec5 100644
--- a/schemas/cache/media-buy/get-media-buy-delivery-response.json
+++ b/schemas/cache/media-buy/get-media-buy-delivery-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-media-buy-delivery-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_media_buy_delivery task",
@@ -68,7 +67,7 @@
         "reach_unit": {
           "allOf": [
             {
-              "$ref": "/schemas/3.0.0-rc.3/enums/reach-unit.json"
+              "$ref": "../enums/reach-unit.json"
             }
           ],
           "description": "Unit of measurement for reach. Only present when all aggregated media buys use the same reach_unit."
@@ -97,11 +96,11 @@
       "type": "object"
     },
     "attribution_window": {
-      "$ref": "/schemas/3.0.0-rc.3/core/attribution-window.json",
+      "$ref": "../core/attribution-window.json",
       "description": "Attribution methodology and lookback windows used for conversion metrics in this response. All media buys from a single seller share the same attribution methodology. Enables cross-platform comparison (e.g., Amazon 14-day click vs. Criteo 30-day click)."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "currency": {
       "description": "ISO 4217 currency code",
@@ -111,12 +110,12 @@
     "errors": {
       "description": "Task-specific errors and warnings (e.g., missing delivery data, reporting platform issues)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "media_buy_deliveries": {
       "description": "Array of delivery data for media buys. When used in webhook notifications, may contain multiple media buys aggregated by publisher. When used in get_media_buy_delivery API responses, typically contains requested media buys.",
@@ -128,7 +127,7 @@
             "items": {
               "allOf": [
                 {
-                  "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                  "$ref": "../core/delivery-metrics.json"
                 },
                 {
                   "properties": {
@@ -137,7 +136,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -150,7 +149,7 @@
                                 "type": "string"
                               },
                               "audience_source": {
-                                "$ref": "/schemas/3.0.0-rc.3/enums/audience-source.json",
+                                "$ref": "../enums/audience-source.json",
                                 "description": "Origin of the audience segment (synced, platform, third_party, lookalike, retargeting, unknown)"
                               }
                             },
@@ -175,7 +174,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -184,7 +183,7 @@
                                 "type": "string"
                               },
                               "content_id_type": {
-                                "$ref": "/schemas/3.0.0-rc.3/enums/content-id-type.json",
+                                "$ref": "../enums/content-id-type.json",
                                 "description": "Identifier type for this content_id"
                               }
                             },
@@ -204,7 +203,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -235,12 +234,12 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
                               "device_platform": {
-                                "$ref": "/schemas/3.0.0-rc.3/enums/device-platform.json",
+                                "$ref": "../enums/device-platform.json",
                                 "description": "Operating system platform"
                               }
                             },
@@ -264,12 +263,12 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
                               "device_type": {
-                                "$ref": "/schemas/3.0.0-rc.3/enums/device-type.json",
+                                "$ref": "../enums/device-type.json",
                                 "description": "Device form factor (desktop, mobile, tablet, ctv, dooh, unknown)"
                               }
                             },
@@ -293,7 +292,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -302,7 +301,7 @@
                                 "type": "string"
                               },
                               "geo_level": {
-                                "$ref": "/schemas/3.0.0-rc.3/enums/geo-level.json",
+                                "$ref": "../enums/geo-level.json",
                                 "description": "Geographic level of this entry (country, region, metro, postal_area)"
                               },
                               "geo_name": {
@@ -335,7 +334,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -370,7 +369,7 @@
                       "items": {
                         "allOf": [
                           {
-                            "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                            "$ref": "../core/delivery-metrics.json"
                           },
                           {
                             "properties": {
@@ -479,7 +478,7 @@
                       "type": "boolean"
                     },
                     "pricing_model": {
-                      "$ref": "/schemas/3.0.0-rc.3/enums/pricing-model.json",
+                      "$ref": "../enums/pricing-model.json",
                       "description": "The pricing model used for this package (e.g., cpm, cpcv, cpp). Indicates how the package is billed and which metrics are most relevant for optimization."
                     },
                     "rate": {
@@ -566,7 +565,7 @@
             "type": "string"
           },
           "pricing_model": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/pricing-model.json",
+            "$ref": "../enums/pricing-model.json",
             "description": "Pricing model used for this media buy"
           },
           "status": {
@@ -587,7 +586,7 @@
           "totals": {
             "allOf": [
               {
-                "$ref": "/schemas/3.0.0-rc.3/core/delivery-metrics.json"
+                "$ref": "../core/delivery-metrics.json"
               },
               {
                 "description": "Aggregate metrics for this media buy across all packages",
diff --git a/schemas/cache/media-buy/get-media-buys-request.json b/schemas/cache/media-buy/get-media-buys-request.json
index 4d1393eaa..f182d0085 100644
--- a/schemas/cache/media-buy/get-media-buys-request.json
+++ b/schemas/cache/media-buy/get-media-buys-request.json
@@ -1,18 +1,17 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-media-buys-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for retrieving media buy status, creative approval state, and optional delivery snapshots",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account to retrieve media buys for. When omitted, returns data across all accessible accounts."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "include_history": {
       "default": 0,
@@ -35,18 +34,18 @@
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json",
+      "$ref": "../core/pagination-request.json",
       "description": "Cursor-based pagination controls. Strongly recommended when querying broad scopes (for example, all active media buys in an account)."
     },
     "status_filter": {
       "description": "Filter by status. Can be a single status or array of statuses. Defaults to [\"active\"] when media_buy_ids is omitted. When media_buy_ids is provided, no implicit status filter is applied.",
       "oneOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+          "$ref": "../enums/media-buy-status.json"
         },
         {
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+            "$ref": "../enums/media-buy-status.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/media-buy/get-media-buys-response.json b/schemas/cache/media-buy/get-media-buys-response.json
index 502cd76ca..90a27c12f 100644
--- a/schemas/cache/media-buy/get-media-buys-response.json
+++ b/schemas/cache/media-buy/get-media-buys-response.json
@@ -1,21 +1,20 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-media-buys-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_media_buys task. Returns media buy configuration, creative approval state, and optional delivery snapshots.",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "errors": {
       "description": "Task-specific errors (e.g., media buy not found)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "media_buys": {
       "description": "Array of media buys with status, creative approval state, and optional delivery snapshots",
@@ -23,7 +22,7 @@
         "additionalProperties": true,
         "properties": {
           "account": {
-            "$ref": "/schemas/3.0.0-rc.3/core/account.json",
+            "$ref": "../core/account.json",
             "description": "Account billed for this media buy"
           },
           "cancellation": {
@@ -36,7 +35,7 @@
                 "type": "string"
               },
               "canceled_by": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/canceled-by.json",
+                "$ref": "../enums/canceled-by.json",
                 "description": "Which party initiated the cancellation."
               },
               "reason": {
@@ -77,7 +76,7 @@
             "type": "string"
           },
           "ext": {
-            "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+            "$ref": "../core/ext.json"
           },
           "history": {
             "description": "Revision history entries, most recent first. Only present when include_history > 0 in the request. Each entry represents a state change or update to the media buy. Entries are append-only: sellers MUST NOT modify or delete previously emitted history entries. Callers MAY cache entries by revision number. Returns min(N, available entries) when include_history exceeds the total.",
@@ -93,7 +92,7 @@
                   "type": "string"
                 },
                 "ext": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+                  "$ref": "../core/ext.json"
                 },
                 "package_id": {
                   "description": "Package affected, when the change targeted a specific package.",
@@ -125,7 +124,7 @@
             "type": "array"
           },
           "invoice_recipient": {
-            "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+            "$ref": "../core/business-entity.json",
             "description": "Per-buy invoice recipient when provided at creation. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
           },
           "media_buy_id": {
@@ -162,7 +161,7 @@
                       "type": "string"
                     },
                     "canceled_by": {
-                      "$ref": "/schemas/3.0.0-rc.3/enums/canceled-by.json",
+                      "$ref": "../enums/canceled-by.json",
                       "description": "Which party initiated the package cancellation."
                     },
                     "reason": {
@@ -183,7 +182,7 @@
                     "additionalProperties": true,
                     "properties": {
                       "approval_status": {
-                        "$ref": "/schemas/3.0.0-rc.3/enums/creative-approval-status.json"
+                        "$ref": "../enums/creative-approval-status.json"
                       },
                       "creative_id": {
                         "description": "Creative identifier",
@@ -218,12 +217,12 @@
                   "type": "string"
                 },
                 "ext": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+                  "$ref": "../core/ext.json"
                 },
                 "format_ids_pending": {
                   "description": "Format IDs from the original create_media_buy format_ids_to_provide that have not yet been uploaded via sync_creatives. When empty or absent, all required formats have been provided.",
                   "items": {
-                    "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+                    "$ref": "../core/format-id.json"
                   },
                   "type": "array"
                 },
@@ -276,7 +275,7 @@
                       "type": "string"
                     },
                     "ext": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/ext.json",
+                      "$ref": "../core/ext.json",
                       "description": "Optional extension object for seller-specific snapshot fields."
                     },
                     "impressions": {
@@ -342,7 +341,7 @@
             "type": "string"
           },
           "status": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json"
+            "$ref": "../enums/media-buy-status.json"
           },
           "total_budget": {
             "description": "Total budget amount across all packages, denominated in media_buy.currency",
@@ -384,7 +383,7 @@
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json",
+      "$ref": "../core/pagination-response.json",
       "description": "Pagination metadata for the media_buys array."
     },
     "sandbox": {
diff --git a/schemas/cache/media-buy/get-products-async-response-input-required.json b/schemas/cache/media-buy/get-products-async-response-input-required.json
index 1505c11b2..3ad4b9f74 100644
--- a/schemas/cache/media-buy/get-products-async-response-input-required.json
+++ b/schemas/cache/media-buy/get-products-async-response-input-required.json
@@ -1,38 +1,37 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Products - Input Required",
   "description": "Payload when search is paused waiting for user clarification.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
-    "partial_results": {
-      "description": "Partial product results that may help inform the clarification",
-      "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/product.json"
-      },
-      "type": "array"
-    },
     "reason": {
-      "description": "Reason code indicating why input is needed",
+      "type": "string",
       "enum": [
         "CLARIFICATION_NEEDED",
         "BUDGET_REQUIRED"
       ],
-      "type": "string"
+      "description": "Reason code indicating why input is needed"
+    },
+    "partial_results": {
+      "type": "array",
+      "description": "Partial product results that may help inform the clarification",
+      "items": {
+        "$ref": "../core/product.json"
+      }
     },
     "suggestions": {
+      "type": "array",
       "description": "Suggested values or options for the required input",
       "items": {
         "type": "string"
-      },
-      "type": "array"
+      }
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Products - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-products-async-response-submitted.json b/schemas/cache/media-buy/get-products-async-response-submitted.json
index 92a3ce6bc..637f2b032 100644
--- a/schemas/cache/media-buy/get-products-async-response-submitted.json
+++ b/schemas/cache/media-buy/get-products-async-response-submitted.json
@@ -1,21 +1,20 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Products - Submitted",
   "description": "Payload acknowledging the search is queued. Usually for custom/bespoke product curation.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
     "estimated_completion": {
-      "description": "Estimated completion time for the search",
+      "type": "string",
       "format": "date-time",
-      "type": "string"
+      "description": "Estimated completion time for the search"
+    },
+    "context": {
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Products - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-products-async-response-working.json b/schemas/cache/media-buy/get-products-async-response-working.json
index 45f63c0ca..4438162f3 100644
--- a/schemas/cache/media-buy/get-products-async-response-working.json
+++ b/schemas/cache/media-buy/get-products-async-response-working.json
@@ -1,34 +1,33 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-products-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Get Products - Working",
   "description": "Progress payload for active get_products task.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "percentage": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 100,
+      "description": "Progress percentage of the search operation"
     },
     "current_step": {
-      "description": "Current step in the search process (e.g., 'searching_inventory', 'validating_availability')",
-      "type": "string"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "type": "string",
+      "description": "Current step in the search process (e.g., 'searching_inventory', 'validating_availability')"
     },
-    "percentage": {
-      "description": "Progress percentage of the search operation",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+    "total_steps": {
+      "type": "integer",
+      "description": "Total number of steps in the search process"
     },
     "step_number": {
-      "description": "Current step number (1-indexed)",
-      "type": "integer"
+      "type": "integer",
+      "description": "Current step number (1-indexed)"
     },
-    "total_steps": {
-      "description": "Total number of steps in the search process",
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Get Products - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/get-products-request.json b/schemas/cache/media-buy/get-products-request.json
index 5780fad46..31c015bd6 100644
--- a/schemas/cache/media-buy/get-products-request.json
+++ b/schemas/cache/media-buy/get-products-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-products-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "dependencies": {
@@ -10,11 +9,11 @@
   "description": "Request parameters for discovering or refining advertising products. buying_mode declares the buyer's intent: 'brief' for curated discovery, 'wholesale' for raw catalog access, or 'refine' to iterate on known products and proposals.",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account for product lookup. Returns products with pricing specific to this account's rate card."
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand reference for product discovery context. Resolved to full brand identity at execution time."
     },
     "brief": {
@@ -31,14 +30,14 @@
       "type": "string"
     },
     "catalog": {
-      "$ref": "/schemas/3.0.0-rc.3/core/catalog.json",
+      "$ref": "../core/catalog.json",
       "description": "Catalog of items the buyer wants to promote. The seller matches catalog items against its inventory and returns products where matches exist. Supports all catalog types: a job catalog finds job ad products, a product catalog finds sponsored product slots. Reference a synced catalog by catalog_id, or provide inline items."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "fields": {
       "description": "Specific product fields to include in the response. When omitted, all fields are returned. Use for lightweight discovery calls where only a subset of product data is needed (e.g., just IDs and pricing for comparison). Required fields (product_id, name) are always included regardless of selection.",
@@ -81,22 +80,22 @@
       "type": "array"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/core/product-filters.json"
+      "$ref": "../core/product-filters.json"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "preferred_delivery_types": {
       "description": "Delivery types the buyer prefers, in priority order. Unlike filters.delivery_type which excludes non-matching products, this signals preference for curation \u2014 the publisher may still include other delivery types when they match the brief well.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/delivery-type.json"
+        "$ref": "../enums/delivery-type.json"
       },
       "minItems": 1,
       "type": "array",
       "uniqueItems": true
     },
     "property_list": {
-      "$ref": "/schemas/3.0.0-rc.3/core/property-list-ref.json",
+      "$ref": "../core/property-list-ref.json",
       "description": "[AdCP 3.0] Reference to an externally managed property list. When provided, the sales agent should filter products to only those available on properties in the list."
     },
     "refine": {
@@ -206,7 +205,7 @@
     "time_budget": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+          "$ref": "../core/duration.json"
         }
       ],
       "description": "Maximum time the buyer will commit to this request. The seller returns the best results achievable within this budget and does not start processes (human approvals, expensive external queries) that cannot complete in time. When omitted, the seller decides timing."
diff --git a/schemas/cache/media-buy/get-products-response.json b/schemas/cache/media-buy/get-products-response.json
index 293108447..257683afa 100644
--- a/schemas/cache/media-buy/get-products-response.json
+++ b/schemas/cache/media-buy/get-products-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/get-products-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_products task",
@@ -9,17 +8,17 @@
       "type": "boolean"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "errors": {
       "description": "Task-specific errors and warnings (e.g., product filtering issues)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "incomplete": {
       "description": "Declares what the seller could not finish within the buyer's time_budget or due to internal limits. Each entry identifies a scope that is missing or partial. Absent when the response is fully complete.",
@@ -33,7 +32,7 @@
           "estimated_wait": {
             "allOf": [
               {
-                "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                "$ref": "../core/duration.json"
               }
             ],
             "description": "How much additional time would resolve this scope. Allows the buyer to decide whether to retry with a larger time_budget."
@@ -59,12 +58,12 @@
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     },
     "products": {
       "description": "Array of matching products",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/product.json"
+        "$ref": "../core/product.json"
       },
       "type": "array"
     },
@@ -75,7 +74,7 @@
     "proposals": {
       "description": "Optional array of proposed media plans with budget allocations across products. Publishers include proposals when they can provide strategic guidance based on the brief. Proposals are actionable - buyers can refine them via follow-up get_products calls within the same session, or execute them directly via create_media_buy.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/proposal.json"
+        "$ref": "../core/proposal.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/media-buy/list-creative-formats-request.json b/schemas/cache/media-buy/list-creative-formats-request.json
index 4a8efb11e..b32e3456e 100644
--- a/schemas/cache/media-buy/list-creative-formats-request.json
+++ b/schemas/cache/media-buy/list-creative-formats-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/list-creative-formats-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for discovering supported creative formats",
@@ -7,18 +6,18 @@
     "asset_types": {
       "description": "Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/asset-content-type.json"
+        "$ref": "../enums/asset-content-type.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "disclosure_persistence": {
       "description": "Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-persistence.json"
+        "$ref": "../enums/disclosure-persistence.json"
       },
       "minItems": 1,
       "type": "array",
@@ -27,19 +26,19 @@
     "disclosure_positions": {
       "description": "Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/disclosure-position.json"
+        "$ref": "../enums/disclosure-position.json"
       },
       "minItems": 1,
       "type": "array",
       "uniqueItems": true
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "format_ids": {
       "description": "Return only these specific format IDs (e.g., from get_products response)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -47,7 +46,7 @@
     "input_format_ids": {
       "description": "Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input \u2014 inspect each result's output_format_ids to see what they can produce.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -79,16 +78,16 @@
     "output_format_ids": {
       "description": "Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs \u2014 inspect each result's input_format_ids to see what inputs they accept.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "wcag_level": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/wcag-level.json",
+      "$ref": "../enums/wcag-level.json",
       "description": "Filter to formats that meet at least this WCAG conformance level (A < AA < AAA)"
     }
   },
diff --git a/schemas/cache/media-buy/list-creative-formats-response.json b/schemas/cache/media-buy/list-creative-formats-response.json
index 23433eaf7..f31b36e23 100644
--- a/schemas/cache/media-buy/list-creative-formats-response.json
+++ b/schemas/cache/media-buy/list-creative-formats-response.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/list-creative-formats-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for list_creative_formats task",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_agents": {
       "description": "Optional: Creative agents that provide additional formats. Buyers can recursively query these agents to discover more formats. No authentication required for list_creative_formats.",
@@ -23,7 +22,7 @@
           "capabilities": {
             "description": "Capabilities this creative agent provides",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/creative-agent-capability.json"
+              "$ref": "../enums/creative-agent-capability.json"
             },
             "type": "array"
           }
@@ -38,22 +37,22 @@
     "errors": {
       "description": "Task-specific errors and warnings (e.g., format availability issues)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "formats": {
       "description": "Full format definitions for all formats this agent supports. Each format's authoritative source is indicated by its agent_url field.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format.json"
+        "$ref": "../core/format.json"
       },
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     },
     "sandbox": {
       "description": "When true, this response contains simulated data from sandbox mode.",
diff --git a/schemas/cache/media-buy/log-event-request.json b/schemas/cache/media-buy/log-event-request.json
index 1b5d50a7c..565d554a8 100644
--- a/schemas/cache/media-buy/log-event-request.json
+++ b/schemas/cache/media-buy/log-event-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/log-event-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for logging marketing events",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "event_source_id": {
       "description": "Event source configured on the account via sync_event_sources",
@@ -14,14 +13,14 @@
     "events": {
       "description": "Events to log",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/event.json"
+        "$ref": "../core/event.json"
       },
       "maxItems": 10000,
       "minItems": 1,
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. Prevents duplicate event logging on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
diff --git a/schemas/cache/media-buy/log-event-response.json b/schemas/cache/media-buy/log-event-response.json
index 0e84b9933..b41acd9db 100644
--- a/schemas/cache/media-buy/log-event-response.json
+++ b/schemas/cache/media-buy/log-event-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/log-event-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from event logging operation. Returns either event processing results OR operation-level errors.",
   "oneOf": [
@@ -13,7 +12,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "events_processed": {
           "description": "Number of events successfully queued for processing",
@@ -26,7 +25,7 @@
           "type": "integer"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "match_quality": {
           "description": "Overall match quality score for the batch (0.0 = no matches, 1.0 = all matched)",
@@ -104,18 +103,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/package-request.json b/schemas/cache/media-buy/package-request.json
index db510fa15..641c62976 100644
--- a/schemas/cache/media-buy/package-request.json
+++ b/schemas/cache/media-buy/package-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/package-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Package configuration for media buy creation",
@@ -17,17 +16,17 @@
     "catalogs": {
       "description": "Catalogs this package promotes. Each catalog MUST have a distinct type (e.g., one product catalog, one store catalog). This constraint is enforced at the application level \u2014 sellers MUST reject requests containing multiple catalogs of the same type with a validation_error. Makes the package catalog-driven: one budget envelope, platform optimizes across items.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+        "$ref": "../core/catalog.json"
       },
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_assignments": {
       "description": "Assign existing library creatives to this package with optional weights and placement targeting",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-assignment.json"
+        "$ref": "../core/creative-assignment.json"
       },
       "minItems": 1,
       "type": "array"
@@ -35,7 +34,7 @@
     "creatives": {
       "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-asset.json"
+        "$ref": "../core/creative-asset.json"
       },
       "maxItems": 100,
       "minItems": 1,
@@ -47,12 +46,12 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "format_ids": {
       "description": "Array of format IDs that will be used for this package - must be supported by the product. If omitted, defaults to all formats supported by the product.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "minItems": 1,
       "type": "array"
@@ -65,13 +64,13 @@
     "optimization_goals": {
       "description": "Optimization targets for this package. The seller optimizes delivery toward these goals in priority order. Common pattern: event goals (purchase, install) as primary targets at priority 1; metric goals (clicks, views) as secondary proxy signals at priority 2+.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/optimization-goal.json"
+        "$ref": "../core/optimization-goal.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "pacing": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/pacing.json"
+      "$ref": "../enums/pacing.json"
     },
     "paused": {
       "default": false,
@@ -95,7 +94,7 @@
       "type": "string"
     },
     "targeting_overlay": {
-      "$ref": "/schemas/3.0.0-rc.3/core/targeting.json"
+      "$ref": "../core/targeting.json"
     }
   },
   "required": [
diff --git a/schemas/cache/media-buy/package-update.json b/schemas/cache/media-buy/package-update.json
index 11194e146..13b5c7b1c 100644
--- a/schemas/cache/media-buy/package-update.json
+++ b/schemas/cache/media-buy/package-update.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/package-update.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Package update configuration for update_media_buy. Identifies package by package_id and specifies fields to modify. Fields not present are left unchanged. Note: product_id, format_ids, and pricing_option_id cannot be changed after creation.",
@@ -27,25 +26,25 @@
     "catalogs": {
       "description": "Replace the catalogs this package promotes. Uses replacement semantics \u2014 the provided array replaces the current list. Omit to leave catalogs unchanged.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+        "$ref": "../core/catalog.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_assignments": {
       "description": "Replace creative assignments for this package with optional weights and placement targeting. Uses replacement semantics - omit to leave assignments unchanged.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-assignment.json"
+        "$ref": "../core/creative-assignment.json"
       },
       "type": "array"
     },
     "creatives": {
       "description": "Upload new creative assets and assign to this package (creatives will be added to library). Use creative_assignments instead for existing library creatives.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/creative-asset.json"
+        "$ref": "../core/creative-asset.json"
       },
       "maxItems": 100,
       "minItems": 1,
@@ -57,7 +56,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "impressions": {
       "description": "Updated impression goal for this package",
@@ -188,13 +187,13 @@
     "optimization_goals": {
       "description": "Replace all optimization goals for this package. Uses replacement semantics \u2014 omit to leave goals unchanged.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/optimization-goal.json"
+        "$ref": "../core/optimization-goal.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "pacing": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/pacing.json"
+      "$ref": "../enums/pacing.json"
     },
     "package_id": {
       "description": "Seller's ID of package to update",
@@ -213,7 +212,7 @@
       "type": "string"
     },
     "targeting_overlay": {
-      "$ref": "/schemas/3.0.0-rc.3/core/targeting.json",
+      "$ref": "../core/targeting.json",
       "description": "Targeting overlay to apply to this package. Uses replacement semantics \u2014 the full overlay replaces the previous one. Omit to leave targeting unchanged. For keyword and negative keyword updates, prefer the incremental operations (keyword_targets_add, keyword_targets_remove, negative_keywords_add, negative_keywords_remove) which avoid replacing the full overlay. Sellers SHOULD return a validation error if targeting_overlay.keyword_targets is present in the same request as keyword_targets_add or keyword_targets_remove, and likewise for negative_keywords."
     }
   },
diff --git a/schemas/cache/media-buy/provide-performance-feedback-request.json b/schemas/cache/media-buy/provide-performance-feedback-request.json
index f094cf455..c68de2576 100644
--- a/schemas/cache/media-buy/provide-performance-feedback-request.json
+++ b/schemas/cache/media-buy/provide-performance-feedback-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/provide-performance-feedback-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request payload for provide_performance_feedback task",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative_id": {
       "description": "Specific creative asset (if feedback is creative-specific)",
@@ -13,10 +12,10 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "feedback_source": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/feedback-source.json",
+      "$ref": "../enums/feedback-source.json",
       "default": "buyer_attribution",
       "description": "Source of the performance data"
     },
@@ -27,7 +26,7 @@
       "type": "string"
     },
     "measurement_period": {
-      "$ref": "/schemas/3.0.0-rc.3/core/datetime-range.json",
+      "$ref": "../core/datetime-range.json",
       "description": "Time period for performance measurement"
     },
     "media_buy_id": {
@@ -36,7 +35,7 @@
       "type": "string"
     },
     "metric_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/metric-type.json",
+      "$ref": "../enums/metric-type.json",
       "default": "overall_performance",
       "description": "The business metric being measured"
     },
diff --git a/schemas/cache/media-buy/provide-performance-feedback-response.json b/schemas/cache/media-buy/provide-performance-feedback-response.json
index d7f4d3719..5e323704b 100644
--- a/schemas/cache/media-buy/provide-performance-feedback-response.json
+++ b/schemas/cache/media-buy/provide-performance-feedback-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/provide-performance-feedback-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for provide_performance_feedback task. Returns either success confirmation OR error information, never both.",
   "oneOf": [
@@ -13,10 +12,10 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -53,18 +52,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Array of errors explaining why feedback was rejected (e.g., invalid measurement period, missing campaign data)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/sync-audiences-request.json b/schemas/cache/media-buy/sync-audiences-request.json
index 386522ca0..26656e574 100644
--- a/schemas/cache/media-buy/sync-audiences-request.json
+++ b/schemas/cache/media-buy/sync-audiences-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-audiences-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for managing CRM-based audiences on an account with upsert semantics. Existing audiences matched by audience_id are updated, new ones are created. Members are specified as delta operations: add appends new members, remove drops existing ones. Recommend no more than 100,000 members per call; for larger lists, chunk and call incrementally using add/remove deltas. When delete_missing is true, buyer-managed audiences on the account not in this request are removed \u2014 do not combine with omitted audiences or all buyer-managed audiences will be deleted. When audiences is omitted, the call is discovery-only: it returns all audiences on the account without modification.",
@@ -15,7 +14,7 @@
   },
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account to manage audiences for."
     },
     "audiences": {
@@ -26,7 +25,7 @@
           "add": {
             "description": "Members to add to this audience. Hashed before sending \u2014 normalize emails to lowercase+trim, phones to E.164.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/audience-member.json"
+              "$ref": "../core/audience-member.json"
             },
             "minItems": 1,
             "type": "array"
@@ -45,7 +44,7 @@
             "type": "string"
           },
           "consent_basis": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/consent-basis.json",
+            "$ref": "../enums/consent-basis.json",
             "description": "GDPR lawful basis for processing this audience list. Informational \u2014 not validated by the protocol, but required by some sellers operating in regulated markets (e.g. EU). When omitted, the buyer asserts they have a lawful basis appropriate to their jurisdiction."
           },
           "delete": {
@@ -63,7 +62,7 @@
           "remove": {
             "description": "Members to remove from this audience. If the same identifier appears in both add and remove in a single request, remove takes precedence.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/audience-member.json"
+              "$ref": "../core/audience-member.json"
             },
             "minItems": 1,
             "type": "array"
@@ -87,7 +86,7 @@
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "delete_missing": {
       "default": false,
@@ -95,7 +94,7 @@
       "type": "boolean"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
diff --git a/schemas/cache/media-buy/sync-audiences-response.json b/schemas/cache/media-buy/sync-audiences-response.json
index a5c3a8812..daf0ff67e 100644
--- a/schemas/cache/media-buy/sync-audiences-response.json
+++ b/schemas/cache/media-buy/sync-audiences-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-audiences-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from audience sync operation. Returns either per-audience results OR operation-level errors.",
   "oneOf": [
@@ -41,7 +40,7 @@
               "errors": {
                 "description": "Errors for this audience (only present when action='failed')",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+                  "$ref": "../core/error.json"
                 },
                 "type": "array"
               },
@@ -56,7 +55,7 @@
                   "additionalProperties": true,
                   "properties": {
                     "id_type": {
-                      "$ref": "/schemas/3.0.0-rc.3/enums/match-id-type.json",
+                      "$ref": "../enums/match-id-type.json",
                       "description": "Identifier type. Combines hashed PII types (hashed_email, hashed_phone) with universal ID types (rampid, uid2, maid, etc.)."
                     },
                     "match_rate": {
@@ -134,10 +133,10 @@
           "type": "array"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -169,18 +168,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors that prevented processing",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/sync-catalogs-async-response-input-required.json b/schemas/cache/media-buy/sync-catalogs-async-response-input-required.json
index 004a25cc0..ef0ed5f4c 100644
--- a/schemas/cache/media-buy/sync-catalogs-async-response-input-required.json
+++ b/schemas/cache/media-buy/sync-catalogs-async-response-input-required.json
@@ -1,26 +1,25 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Catalogs - Input Required",
   "description": "Payload when sync_catalogs task is paused waiting for buyer clarification or approval.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
     "reason": {
-      "description": "Reason code indicating why buyer input is needed. APPROVAL_REQUIRED: platform requires explicit approval before activating the catalog. FEED_VALIDATION: feed URL returned unexpected format or schema errors. ITEM_REVIEW: platform flagged items for manual review. FEED_ACCESS: platform cannot access the feed URL (authentication, CORS, etc.).",
+      "type": "string",
       "enum": [
         "APPROVAL_REQUIRED",
         "FEED_VALIDATION",
         "ITEM_REVIEW",
         "FEED_ACCESS"
       ],
-      "type": "string"
+      "description": "Reason code indicating why buyer input is needed. APPROVAL_REQUIRED: platform requires explicit approval before activating the catalog. FEED_VALIDATION: feed URL returned unexpected format or schema errors. ITEM_REVIEW: platform flagged items for manual review. FEED_ACCESS: platform cannot access the feed URL (authentication, CORS, etc.)."
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Catalogs - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-catalogs-async-response-submitted.json b/schemas/cache/media-buy/sync-catalogs-async-response-submitted.json
index 24b7d3c8b..0e80e7791 100644
--- a/schemas/cache/media-buy/sync-catalogs-async-response-submitted.json
+++ b/schemas/cache/media-buy/sync-catalogs-async-response-submitted.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Catalogs - Submitted",
   "description": "Payload acknowledging sync_catalogs task is queued for processing.",
+  "type": "object",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Catalogs - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-catalogs-async-response-working.json b/schemas/cache/media-buy/sync-catalogs-async-response-working.json
index 1990189a5..7d55c5b9e 100644
--- a/schemas/cache/media-buy/sync-catalogs-async-response-working.json
+++ b/schemas/cache/media-buy/sync-catalogs-async-response-working.json
@@ -1,56 +1,55 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Sync Catalogs - Working",
   "description": "Progress payload for active sync_catalogs task.",
+  "type": "object",
   "properties": {
-    "catalogs_processed": {
-      "description": "Number of catalogs processed so far",
+    "percentage": {
+      "type": "number",
       "minimum": 0,
-      "type": "integer"
+      "maximum": 100,
+      "description": "Completion percentage (0-100)"
     },
-    "catalogs_total": {
-      "description": "Total number of catalogs to process",
-      "minimum": 0,
-      "type": "integer"
+    "current_step": {
+      "type": "string",
+      "description": "Current step or phase of the operation (e.g., 'Fetching product feed', 'Validating items', 'Platform review')"
     },
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "total_steps": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Total number of steps in the operation"
     },
-    "current_step": {
-      "description": "Current step or phase of the operation (e.g., 'Fetching product feed', 'Validating items', 'Platform review')",
-      "type": "string"
+    "step_number": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Current step number"
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+    "catalogs_processed": {
+      "type": "integer",
+      "minimum": 0,
+      "description": "Number of catalogs processed so far"
     },
-    "items_processed": {
-      "description": "Total number of catalog items processed across all catalogs",
+    "catalogs_total": {
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Total number of catalogs to process"
     },
-    "items_total": {
-      "description": "Total number of catalog items to process across all catalogs",
+    "items_processed": {
+      "type": "integer",
       "minimum": 0,
-      "type": "integer"
+      "description": "Total number of catalog items processed across all catalogs"
     },
-    "percentage": {
-      "description": "Completion percentage (0-100)",
-      "maximum": 100,
+    "items_total": {
+      "type": "integer",
       "minimum": 0,
-      "type": "number"
+      "description": "Total number of catalog items to process across all catalogs"
     },
-    "step_number": {
-      "description": "Current step number",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
     },
-    "total_steps": {
-      "description": "Total number of steps in the operation",
-      "minimum": 1,
-      "type": "integer"
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Sync Catalogs - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/sync-catalogs-request.json b/schemas/cache/media-buy/sync-catalogs-request.json
index c816aba5b..cdf5dd58c 100644
--- a/schemas/cache/media-buy/sync-catalogs-request.json
+++ b/schemas/cache/media-buy/sync-catalogs-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for syncing catalog feeds with upsert semantics. Supports bulk operations across multiple catalog types (products, inventory, stores, promotions, offerings). Existing catalogs matched by catalog_id are updated, new ones are created. When catalogs is omitted, the call is discovery-only: returns all catalogs on the account without modification.",
@@ -82,7 +81,7 @@
   },
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account that owns these catalogs."
     },
     "catalog_ids": {
@@ -97,14 +96,14 @@
     "catalogs": {
       "description": "Array of catalog feeds to sync (create or update). When omitted, the call is discovery-only and returns all existing catalogs on the account without modification.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+        "$ref": "../core/catalog.json"
       },
       "maxItems": 50,
       "minItems": 1,
       "type": "array"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "delete_missing": {
       "default": false,
@@ -117,14 +116,14 @@
       "type": "boolean"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Optional webhook configuration for async sync notifications. Publisher will send webhook when sync completes if operation takes longer than immediate response time (common for large feeds requiring platform review)."
     },
     "validation_mode": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/validation-mode.json",
+      "$ref": "../enums/validation-mode.json",
       "default": "strict",
       "description": "Validation strictness. 'strict' fails entire sync on any validation error. 'lenient' processes valid catalogs and reports errors."
     }
diff --git a/schemas/cache/media-buy/sync-catalogs-response.json b/schemas/cache/media-buy/sync-catalogs-response.json
index 3d3f43855..235c50f03 100644
--- a/schemas/cache/media-buy/sync-catalogs-response.json
+++ b/schemas/cache/media-buy/sync-catalogs-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-catalogs-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from catalog sync operation. Returns either per-catalog results (best-effort processing) OR operation-level errors (complete failure). Platforms may approve, reject, or flag individual items within each catalog (similar to Google Merchant Center product review).",
   "oneOf": [
@@ -18,7 +17,7 @@
             "additionalProperties": true,
             "properties": {
               "action": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/catalog-action.json",
+                "$ref": "../enums/catalog-action.json",
                 "description": "Action taken for this catalog"
               },
               "catalog_id": {
@@ -61,7 +60,7 @@
                       "type": "array"
                     },
                     "status": {
-                      "$ref": "/schemas/3.0.0-rc.3/enums/catalog-item-status.json",
+                      "$ref": "../enums/catalog-item-status.json",
                       "description": "Item review status"
                     }
                   },
@@ -119,14 +118,14 @@
           "type": "array"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "dry_run": {
           "description": "Whether this was a dry run (no actual changes made)",
           "type": "boolean"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -163,18 +162,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors that prevented processing any catalogs (e.g., authentication failure, service unavailable, invalid request format)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/sync-event-sources-request.json b/schemas/cache/media-buy/sync-event-sources-request.json
index 6d22a3e43..938a010bb 100644
--- a/schemas/cache/media-buy/sync-event-sources-request.json
+++ b/schemas/cache/media-buy/sync-event-sources-request.json
@@ -1,15 +1,14 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-event-sources-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for configuring event sources on an account with upsert semantics. Existing event sources matched by event_source_id are updated, new ones are created. When delete_missing is true, buyer-managed event sources on the account not in this request are removed. When event_sources is omitted, the call is discovery-only: it returns all event sources on the account without modification. The response always includes both synced and seller-managed event sources for full visibility.",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account to configure event sources for."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "delete_missing": {
       "default": false,
@@ -36,7 +35,7 @@
           "event_types": {
             "description": "Event types this source handles (e.g. purchase, lead). If omitted, accepts all event types.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+              "$ref": "../enums/event-type.json"
             },
             "minItems": 1,
             "type": "array"
@@ -55,7 +54,7 @@
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
   "required": [
diff --git a/schemas/cache/media-buy/sync-event-sources-response.json b/schemas/cache/media-buy/sync-event-sources-response.json
index 26502400c..e093c1f48 100644
--- a/schemas/cache/media-buy/sync-event-sources-response.json
+++ b/schemas/cache/media-buy/sync-event-sources-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/sync-event-sources-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response from event source sync operation. Returns either per-source results OR operation-level errors.",
   "oneOf": [
@@ -13,7 +12,7 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "event_sources": {
           "description": "Results for each event source, including both synced and seller-managed sources on the account",
@@ -32,7 +31,7 @@
                 "type": "string"
               },
               "action_source": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/action-source.json",
+                "$ref": "../enums/action-source.json",
                 "description": "Type of event source (website pixel, app SDK, in-store, etc.)"
               },
               "errors": {
@@ -49,12 +48,12 @@
               "event_types": {
                 "description": "Event types this source handles",
                 "items": {
-                  "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+                  "$ref": "../enums/event-type.json"
                 },
                 "type": "array"
               },
               "health": {
-                "$ref": "/schemas/3.0.0-rc.3/core/event-source-health.json",
+                "$ref": "../core/event-source-health.json",
                 "description": "Health assessment for this event source. Reflects event volume, data quality, and parameter completeness. Sellers that support health scoring include this on every source (buyer-managed and seller-managed). Absent when the seller does not evaluate event source health."
               },
               "managed_by": {
@@ -108,7 +107,7 @@
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -140,18 +139,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Operation-level errors that prevented processing",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/media-buy/update-media-buy-async-response-input-required.json b/schemas/cache/media-buy/update-media-buy-async-response-input-required.json
index 5f50930be..0a4bc6d41 100644
--- a/schemas/cache/media-buy/update-media-buy-async-response-input-required.json
+++ b/schemas/cache/media-buy/update-media-buy-async-response-input-required.json
@@ -1,24 +1,23 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-input-required.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Update Media Buy - Input Required",
   "description": "Payload when update_media_buy task is paused waiting for user input or approval.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
-    },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
     "reason": {
-      "description": "Reason code indicating why input is needed",
+      "type": "string",
       "enum": [
         "APPROVAL_REQUIRED",
         "CHANGE_CONFIRMATION"
       ],
-      "type": "string"
+      "description": "Reason code indicating why input is needed"
+    },
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Update Media Buy - Input Required",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/update-media-buy-async-response-submitted.json b/schemas/cache/media-buy/update-media-buy-async-response-submitted.json
index 956f1a792..52281344b 100644
--- a/schemas/cache/media-buy/update-media-buy-async-response-submitted.json
+++ b/schemas/cache/media-buy/update-media-buy-async-response-submitted.json
@@ -1,16 +1,15 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-submitted.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Update Media Buy - Submitted",
   "description": "Payload acknowledging update_media_buy task is queued for processing.",
+  "type": "object",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Update Media Buy - Submitted",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/update-media-buy-async-response-working.json b/schemas/cache/media-buy/update-media-buy-async-response-working.json
index 0131be415..f1f19a573 100644
--- a/schemas/cache/media-buy/update-media-buy-async-response-working.json
+++ b/schemas/cache/media-buy/update-media-buy-async-response-working.json
@@ -1,36 +1,35 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-async-response-working.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": true,
+  "title": "Update Media Buy - Working",
   "description": "Progress payload for active update_media_buy task.",
+  "type": "object",
   "properties": {
-    "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+    "percentage": {
+      "type": "number",
+      "minimum": 0,
+      "maximum": 100,
+      "description": "Completion percentage (0-100)"
     },
     "current_step": {
-      "description": "Current step or phase of the operation",
-      "type": "string"
+      "type": "string",
+      "description": "Current step or phase of the operation"
     },
-    "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
-    },
-    "percentage": {
-      "description": "Completion percentage (0-100)",
-      "maximum": 100,
-      "minimum": 0,
-      "type": "number"
+    "total_steps": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Total number of steps in the operation"
     },
     "step_number": {
-      "description": "Current step number",
+      "type": "integer",
       "minimum": 1,
-      "type": "integer"
+      "description": "Current step number"
     },
-    "total_steps": {
-      "description": "Total number of steps in the operation",
-      "minimum": 1,
-      "type": "integer"
+    "context": {
+      "$ref": "../core/context.json"
+    },
+    "ext": {
+      "$ref": "../core/ext.json"
     }
   },
-  "title": "Update Media Buy - Working",
-  "type": "object"
+  "additionalProperties": true
 }
\ No newline at end of file
diff --git a/schemas/cache/media-buy/update-media-buy-request.json b/schemas/cache/media-buy/update-media-buy-request.json
index 578aa5254..45fcba57b 100644
--- a/schemas/cache/media-buy/update-media-buy-request.json
+++ b/schemas/cache/media-buy/update-media-buy-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for updating campaign and package settings",
@@ -15,7 +14,7 @@
       "type": "string"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "end_time": {
       "description": "New end date/time in ISO 8601 format",
@@ -23,7 +22,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated idempotency key for safe retries. If an update fails without a response, resending with the same idempotency_key guarantees the update is applied at most once. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -32,7 +31,7 @@
       "type": "string"
     },
     "invoice_recipient": {
-      "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+      "$ref": "../core/business-entity.json",
       "description": "Update who receives the invoice for this buy. When provided, the seller invoices this entity instead of the account's default billing_entity. The seller MUST validate the invoice recipient is authorized for this account. When governance_agents are configured, the seller MUST include invoice_recipient in the check_governance request."
     },
     "media_buy_id": {
@@ -42,7 +41,7 @@
     "new_packages": {
       "description": "New packages to add to this media buy. Uses the same schema as create_media_buy packages. Sellers that support mid-flight package additions advertise add_packages in valid_actions. Sellers that do not support this MUST reject with UNSUPPORTED_FEATURE.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/media-buy/package-request.json"
+        "$ref": "package-request.json"
       },
       "minItems": 1,
       "type": "array"
@@ -50,7 +49,7 @@
     "packages": {
       "description": "Package-specific updates for existing packages",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/media-buy/package-update.json"
+        "$ref": "package-update.json"
       },
       "minItems": 1,
       "type": "array"
@@ -60,11 +59,11 @@
       "type": "boolean"
     },
     "push_notification_config": {
-      "$ref": "/schemas/3.0.0-rc.3/core/push-notification-config.json",
+      "$ref": "../core/push-notification-config.json",
       "description": "Optional webhook configuration for async update notifications. Publisher will send webhook when update completes if operation takes longer than immediate response time. This is separate from reporting_webhook which configures ongoing campaign reporting."
     },
     "reporting_webhook": {
-      "$ref": "/schemas/3.0.0-rc.3/core/reporting-webhook.json",
+      "$ref": "../core/reporting-webhook.json",
       "description": "Optional webhook configuration for automated reporting delivery. Updates the reporting configuration for this media buy."
     },
     "revision": {
@@ -73,7 +72,7 @@
       "type": "integer"
     },
     "start_time": {
-      "$ref": "/schemas/3.0.0-rc.3/core/start-timing.json"
+      "$ref": "../core/start-timing.json"
     }
   },
   "required": [
diff --git a/schemas/cache/media-buy/update-media-buy-response.json b/schemas/cache/media-buy/update-media-buy-response.json
index f4789c873..922374216 100644
--- a/schemas/cache/media-buy/update-media-buy-response.json
+++ b/schemas/cache/media-buy/update-media-buy-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/media-buy/update-media-buy-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for update_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - updates are either fully applied or not applied at all.",
   "oneOf": [
@@ -15,15 +14,15 @@
         "affected_packages": {
           "description": "Array of packages that were modified with complete state information",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/package.json"
+            "$ref": "../core/package.json"
           },
           "type": "array"
         },
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "implementation_date": {
           "description": "ISO 8601 timestamp when changes take effect (null if pending approval)",
@@ -34,7 +33,7 @@
           ]
         },
         "invoice_recipient": {
-          "$ref": "/schemas/3.0.0-rc.3/core/business-entity.json",
+          "$ref": "../core/business-entity.json",
           "description": "Updated invoice recipient, echoed from the request when provided. Confirms the seller accepted the billing override. Bank details are omitted (write-only)."
         },
         "media_buy_id": {
@@ -51,7 +50,7 @@
           "type": "boolean"
         },
         "status": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/media-buy-status.json",
+          "$ref": "../enums/media-buy-status.json",
           "description": "Media buy status after the update. Present when the update changes the media buy's status (e.g., cancellation transitions to 'canceled', pause transitions to 'paused')."
         },
         "valid_actions": {
@@ -102,18 +101,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Array of errors explaining why the operation failed",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/pricing-options/cpa-option.json b/schemas/cache/pricing-options/cpa-option.json
index 15b6fe59a..b296465f4 100644
--- a/schemas/cache/pricing-options/cpa-option.json
+++ b/schemas/cache/pricing-options/cpa-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpa-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per Acquisition pricing. Advertiser pays a fixed price when a specified conversion event occurs. The event_type field declares which event triggers billing (e.g., purchase, lead, app_install).",
@@ -22,7 +21,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -34,7 +33,7 @@
     "event_type": {
       "allOf": [
         {
-          "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+          "$ref": "../enums/event-type.json"
         }
       ],
       "description": "The conversion event type that triggers billing (e.g., purchase, lead, app_install)"
@@ -50,7 +49,7 @@
       "type": "number"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/cpc-option.json b/schemas/cache/pricing-options/cpc-option.json
index 63c7054cc..95070add6 100644
--- a/schemas/cache/pricing-options/cpc-option.json
+++ b/schemas/cache/pricing-options/cpc-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpc-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per Click pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -44,11 +43,11 @@
       "type": "number"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/cpcv-option.json b/schemas/cache/pricing-options/cpcv-option.json
index 7ae469de7..38282bb6c 100644
--- a/schemas/cache/pricing-options/cpcv-option.json
+++ b/schemas/cache/pricing-options/cpcv-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpcv-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per Completed View (100% video/audio completion) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -44,11 +43,11 @@
       "type": "number"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/cpm-option.json b/schemas/cache/pricing-options/cpm-option.json
index 3883a2ab7..737dd80cb 100644
--- a/schemas/cache/pricing-options/cpm-option.json
+++ b/schemas/cache/pricing-options/cpm-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpm-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per Mille (cost per 1,000 impressions) pricing. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -44,11 +43,11 @@
       "type": "number"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/cpp-option.json b/schemas/cache/pricing-options/cpp-option.json
index 607358a39..ac8d4df49 100644
--- a/schemas/cache/pricing-options/cpp-option.json
+++ b/schemas/cache/pricing-options/cpp-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpp-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per Point (Gross Rating Point) pricing for TV and audio campaigns. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -47,7 +46,7 @@
           "type": "string"
         },
         "demographic_system": {
-          "$ref": "/schemas/3.0.0-rc.3/enums/demographic-system.json",
+          "$ref": "../enums/demographic-system.json",
           "description": "Measurement system for the demographic field. Defaults to nielsen when omitted."
         },
         "min_points": {
@@ -62,11 +61,11 @@
       "type": "object"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/cpv-option.json b/schemas/cache/pricing-options/cpv-option.json
index a19302716..f623fe749 100644
--- a/schemas/cache/pricing-options/cpv-option.json
+++ b/schemas/cache/pricing-options/cpv-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/cpv-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost Per View (at publisher-defined threshold) pricing for video/audio. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -79,11 +78,11 @@
       "type": "object"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/flat-rate-option.json b/schemas/cache/pricing-options/flat-rate-option.json
index 9c3d4c395..1ba26a6ed 100644
--- a/schemas/cache/pricing-options/flat-rate-option.json
+++ b/schemas/cache/pricing-options/flat-rate-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/flat-rate-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Flat rate pricing for sponsorships, takeovers, and DOOH exclusive placements. A fixed total cost regardless of delivery volume. For duration-scaled pricing (rate \u00d7 time units), use the `time` model instead. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -89,11 +88,11 @@
       "type": "object"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/price-breakdown.json b/schemas/cache/pricing-options/price-breakdown.json
index d7445cd5d..0fbfcaeaa 100644
--- a/schemas/cache/pricing-options/price-breakdown.json
+++ b/schemas/cache/pricing-options/price-breakdown.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Breaks down the composition of fixed_price from a list (rate card) price through adjustments. Adjustments fall into four kinds: fees (increase buyer price), discounts (reduce buyer price), commissions (revenue splits that don't affect buyer price), and settlement terms (applied at invoicing). The invariant is: list_price with all fee and discount adjustments applied sequentially equals fixed_price. Fees increase the running price; discounts reduce it. This invariant applies only when fixed_price is present on the parent object; on auction-based packages the breakdown is informational only. All monetary values are rounded to currency precision at each step. Budgets are always denominated at the fixed_price level, inclusive of commissions.",
@@ -37,7 +36,7 @@
             "type": "string"
           },
           "kind": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+            "$ref": "../enums/adjustment-kind.json"
           },
           "name": {
             "description": "Specific adjustment name. Use well-known values where applicable for interoperability.",
diff --git a/schemas/cache/pricing-options/price-guidance.json b/schemas/cache/pricing-options/price-guidance.json
index 054370265..38ed78ce4 100644
--- a/schemas/cache/pricing-options/price-guidance.json
+++ b/schemas/cache/pricing-options/price-guidance.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Pricing guidance for auction-based bidding. Helps buyers calibrate bids with historical percentiles.",
diff --git a/schemas/cache/pricing-options/time-option.json b/schemas/cache/pricing-options/time-option.json
index 585b476a5..c1720299b 100644
--- a/schemas/cache/pricing-options/time-option.json
+++ b/schemas/cache/pricing-options/time-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/time-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Cost per time unit (hour, day, week, or month) - rate scales with campaign duration. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -69,11 +68,11 @@
       "type": "object"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/pricing-options/vcpm-option.json b/schemas/cache/pricing-options/vcpm-option.json
index a9d3e982a..6e8e82cdf 100644
--- a/schemas/cache/pricing-options/vcpm-option.json
+++ b/schemas/cache/pricing-options/vcpm-option.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/pricing-options/vcpm-option.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Viewable Cost Per Mille (cost per 1,000 viewable impressions) pricing - MRC viewability standard. If fixed_price is present, it's fixed pricing. If absent, it's auction-based.",
@@ -18,7 +17,7 @@
     "eligible_adjustments": {
       "description": "Adjustment kinds applicable to this pricing option. Tells buyer agents which adjustments are available before negotiation. When absent, no adjustments are pre-declared \u2014 the buyer should check price_breakdown if present.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/adjustment-kind.json"
+        "$ref": "../enums/adjustment-kind.json"
       },
       "type": "array",
       "uniqueItems": true
@@ -44,11 +43,11 @@
       "type": "number"
     },
     "price_breakdown": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-breakdown.json",
+      "$ref": "price-breakdown.json",
       "description": "Breakdown of how fixed_price was derived from the list (rate card) price. Only meaningful when fixed_price is present."
     },
     "price_guidance": {
-      "$ref": "/schemas/3.0.0-rc.3/pricing-options/price-guidance.json",
+      "$ref": "price-guidance.json",
       "description": "Optional pricing guidance for auction-based bidding"
     },
     "pricing_model": {
diff --git a/schemas/cache/property/base-property-source.json b/schemas/cache/property/base-property-source.json
index 4154c7a0a..8b06a93b4 100644
--- a/schemas/cache/property/base-property-source.json
+++ b/schemas/cache/property/base-property-source.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/base-property-source.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "A source of properties for a property list. Supports three selection patterns: publisher with tags, publisher with property IDs, or direct identifiers.",
   "discriminator": {
@@ -23,7 +22,7 @@
         "tags": {
           "description": "Property tags from the publisher's adagents.json. Selects all properties with these tags.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/property-tag.json"
+            "$ref": "../core/property-tag.json"
           },
           "minItems": 1,
           "type": "array"
@@ -44,7 +43,7 @@
         "property_ids": {
           "description": "Specific property IDs from the publisher's adagents.json",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/property-id.json"
+            "$ref": "../core/property-id.json"
           },
           "minItems": 1,
           "type": "array"
@@ -75,7 +74,7 @@
         "identifiers": {
           "description": "Direct property identifiers (domains, app IDs, etc.)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/identifier.json"
+            "$ref": "../core/identifier.json"
           },
           "minItems": 1,
           "type": "array"
diff --git a/schemas/cache/property/create-property-list-request.json b/schemas/cache/property/create-property-list-request.json
index 690c4a388..f0e99894c 100644
--- a/schemas/cache/property/create-property-list-request.json
+++ b/schemas/cache/property/create-property-list-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/create-property-list-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Request parameters for creating a new property list",
@@ -7,27 +6,27 @@
     "base_properties": {
       "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/property/base-property-source.json"
+        "$ref": "base-property-source.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "description": {
       "description": "Description of the list's purpose",
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list-filters.json",
+      "$ref": "property-list-filters.json",
       "description": "Dynamic filters to apply when resolving the list"
     },
     "idempotency_key": {
diff --git a/schemas/cache/property/create-property-list-response.json b/schemas/cache/property/create-property-list-response.json
index 70812374f..1f0762f25 100644
--- a/schemas/cache/property/create-property-list-response.json
+++ b/schemas/cache/property/create-property-list-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/create-property-list-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response payload for create_property_list task",
@@ -9,10 +8,10 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "list": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list.json",
+      "$ref": "property-list.json",
       "description": "The created property list"
     }
   },
diff --git a/schemas/cache/property/delete-property-list-request.json b/schemas/cache/property/delete-property-list-request.json
index c9591efb7..6cadea38e 100644
--- a/schemas/cache/property/delete-property-list-request.json
+++ b/schemas/cache/property/delete-property-list-request.json
@@ -1,14 +1,13 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/delete-property-list-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Request parameters for deleting a property list",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
diff --git a/schemas/cache/property/delete-property-list-response.json b/schemas/cache/property/delete-property-list-response.json
index 450450dc2..f457ee5ca 100644
--- a/schemas/cache/property/delete-property-list-response.json
+++ b/schemas/cache/property/delete-property-list-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/delete-property-list-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response payload for delete_property_list task",
@@ -9,7 +8,7 @@
       "type": "boolean"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "list_id": {
       "description": "ID of the deleted list",
diff --git a/schemas/cache/property/feature-requirement.json b/schemas/cache/property/feature-requirement.json
index 44b2e9b3d..4489674a9 100644
--- a/schemas/cache/property/feature-requirement.json
+++ b/schemas/cache/property/feature-requirement.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/feature-requirement.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A feature-based requirement for property filtering. Use min_value/max_value for quantitative features, allowed_values for binary/categorical features.",
diff --git a/schemas/cache/property/get-property-list-request.json b/schemas/cache/property/get-property-list-request.json
index 2eda5e588..3664cc089 100644
--- a/schemas/cache/property/get-property-list-request.json
+++ b/schemas/cache/property/get-property-list-request.json
@@ -1,14 +1,13 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/get-property-list-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Request parameters for retrieving a property list with resolved identifiers",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "list_id": {
       "description": "ID of the property list to retrieve",
diff --git a/schemas/cache/property/get-property-list-response.json b/schemas/cache/property/get-property-list-response.json
index 0c4e37b29..39403e366 100644
--- a/schemas/cache/property/get-property-list-response.json
+++ b/schemas/cache/property/get-property-list-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/get-property-list-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response payload for get_property_list task. Returns identifiers only (not full property objects or scores). Consumers should cache the resolved identifiers and refresh based on cache_valid_until.",
@@ -12,7 +11,7 @@
     "coverage_gaps": {
       "additionalProperties": {
         "items": {
-          "$ref": "/schemas/3.0.0-rc.3/core/identifier.json"
+          "$ref": "../core/identifier.json"
         },
         "type": "array"
       },
@@ -20,21 +19,21 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "identifiers": {
       "description": "Resolved identifiers that passed filters (if resolve=true). Cache these locally for real-time use.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/identifier.json"
+        "$ref": "../core/identifier.json"
       },
       "type": "array"
     },
     "list": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list.json",
+      "$ref": "property-list.json",
       "description": "The property list metadata (always returned)"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     },
     "resolved_at": {
       "description": "When the list was resolved",
diff --git a/schemas/cache/property/list-property-lists-request.json b/schemas/cache/property/list-property-lists-request.json
index d1675cb47..7b1c22721 100644
--- a/schemas/cache/property/list-property-lists-request.json
+++ b/schemas/cache/property/list-property-lists-request.json
@@ -1,21 +1,20 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/list-property-lists-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Request parameters for listing property lists",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "name_contains": {
       "description": "Filter to lists whose name contains this string",
       "type": "string"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "principal": {
       "description": "Filter to lists owned by this principal",
diff --git a/schemas/cache/property/list-property-lists-response.json b/schemas/cache/property/list-property-lists-response.json
index 058e42823..2e49450d2 100644
--- a/schemas/cache/property/list-property-lists-response.json
+++ b/schemas/cache/property/list-property-lists-response.json
@@ -1,21 +1,20 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/list-property-lists-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response payload for list_property_lists task",
   "properties": {
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "lists": {
       "description": "Array of property lists (metadata only, not resolved properties)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/property/property-list.json"
+        "$ref": "property-list.json"
       },
       "type": "array"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     }
   },
   "required": [
diff --git a/schemas/cache/property/property-error.json b/schemas/cache/property/property-error.json
index 2cccefd60..efccf90f8 100644
--- a/schemas/cache/property/property-error.json
+++ b/schemas/cache/property/property-error.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-error.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Error information for a property that could not be evaluated",
@@ -21,7 +20,7 @@
       "type": "string"
     },
     "property": {
-      "$ref": "/schemas/3.0.0-rc.3/core/property.json",
+      "$ref": "../core/property.json",
       "description": "The property that caused the error"
     }
   },
diff --git a/schemas/cache/property/property-feature-definition.json b/schemas/cache/property/property-feature-definition.json
index a91b41d06..bc2c2620a 100644
--- a/schemas/cache/property/property-feature-definition.json
+++ b/schemas/cache/property/property-feature-definition.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-feature-definition.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Defines a feature that a governance agent can evaluate for properties. Used in get_adcp_capabilities to advertise agent capabilities.",
@@ -37,7 +36,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "feature_id": {
       "description": "Unique identifier for this feature (e.g., 'consent_quality', 'carbon_score'). Features prefixed with 'registry:' reference standardized policies from the shared policy registry (e.g., 'registry:us_coppa', 'registry:uk_hfss'). Unprefixed feature IDs are agent-defined.",
diff --git a/schemas/cache/property/property-feature.json b/schemas/cache/property/property-feature.json
index 469101c6d..c2869ffe3 100644
--- a/schemas/cache/property/property-feature.json
+++ b/schemas/cache/property/property-feature.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-feature.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A discrete feature assessment for a property (e.g., from app store privacy labels)",
diff --git a/schemas/cache/property/property-list-changed-webhook.json b/schemas/cache/property/property-list-changed-webhook.json
index 9fdea0357..eb9dc0a1b 100644
--- a/schemas/cache/property/property-list-changed-webhook.json
+++ b/schemas/cache/property/property-list-changed-webhook.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-list-changed-webhook.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Webhook notification sent when a property list's resolved properties change. Contains a summary only - recipients must call get_property_list to retrieve the updated properties. This keeps payloads small and avoids redundant data transfer.",
@@ -34,7 +33,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "list_id": {
       "description": "ID of the property list that changed",
diff --git a/schemas/cache/property/property-list-filters.json b/schemas/cache/property/property-list-filters.json
index 5486fc019..520af2641 100644
--- a/schemas/cache/property/property-list-filters.json
+++ b/schemas/cache/property/property-list-filters.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-list-filters.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Filters that dynamically modify a property list when resolved",
@@ -7,7 +6,7 @@
     "channels_any": {
       "description": "Property must support ANY of the listed channels. When omitted, no channel restriction is applied.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+        "$ref": "../enums/channels.json"
       },
       "minItems": 1,
       "type": "array"
@@ -24,7 +23,7 @@
     "exclude_identifiers": {
       "description": "Identifiers to always exclude from results",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/identifier.json"
+        "$ref": "../core/identifier.json"
       },
       "minItems": 1,
       "type": "array"
@@ -32,7 +31,7 @@
     "feature_requirements": {
       "description": "Feature-based requirements. Property must pass ALL requirements (AND logic).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/property/feature-requirement.json"
+        "$ref": "feature-requirement.json"
       },
       "minItems": 1,
       "type": "array"
@@ -40,7 +39,7 @@
     "property_types": {
       "description": "Filter to these property types",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/enums/property-type.json"
+        "$ref": "../enums/property-type.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/property/property-list.json b/schemas/cache/property/property-list.json
index 3eaf4a306..59f189ca9 100644
--- a/schemas/cache/property/property-list.json
+++ b/schemas/cache/property/property-list.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/property-list.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A managed property list with optional filters for dynamic evaluation. Lists are resolved at setup time and cached by orchestrators/sellers for real-time use.",
@@ -7,12 +6,12 @@
     "base_properties": {
       "description": "Array of property sources to evaluate. Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers). If omitted, queries the agent's entire property database.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/property/base-property-source.json"
+        "$ref": "base-property-source.json"
       },
       "type": "array"
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time."
     },
     "cache_duration_hours": {
@@ -31,7 +30,7 @@
       "type": "string"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list-filters.json",
+      "$ref": "property-list-filters.json",
       "description": "Dynamic filters applied when resolving the list"
     },
     "list_id": {
diff --git a/schemas/cache/property/update-property-list-request.json b/schemas/cache/property/update-property-list-request.json
index c3cf287d2..009b4926a 100644
--- a/schemas/cache/property/update-property-list-request.json
+++ b/schemas/cache/property/update-property-list-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/update-property-list-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Request parameters for updating an existing property list",
@@ -7,26 +6,26 @@
     "base_properties": {
       "description": "Complete replacement for the base properties list (not a patch). Each entry is a discriminated union: publisher_tags (publisher_domain + tags), publisher_ids (publisher_domain + property_ids), or identifiers (direct identifiers).",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/property/base-property-source.json"
+        "$ref": "base-property-source.json"
       },
       "type": "array"
     },
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Update brand reference. Resolved to full brand identity at execution time."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "description": {
       "description": "New description",
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list-filters.json",
+      "$ref": "property-list-filters.json",
       "description": "Complete replacement for the filters (not a patch)"
     },
     "idempotency_key": {
diff --git a/schemas/cache/property/update-property-list-response.json b/schemas/cache/property/update-property-list-response.json
index a56721620..3586c0c77 100644
--- a/schemas/cache/property/update-property-list-response.json
+++ b/schemas/cache/property/update-property-list-response.json
@@ -1,14 +1,13 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/property/update-property-list-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Response payload for update_property_list task",
   "properties": {
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "list": {
-      "$ref": "/schemas/3.0.0-rc.3/property/property-list.json",
+      "$ref": "property-list.json",
       "description": "The updated property list"
     }
   },
diff --git a/schemas/cache/protocol/get-adcp-capabilities-request.json b/schemas/cache/protocol/get-adcp-capabilities-request.json
index 52fafe8e2..7715358c2 100644
--- a/schemas/cache/protocol/get-adcp-capabilities-request.json
+++ b/schemas/cache/protocol/get-adcp-capabilities-request.json
@@ -1,14 +1,13 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/protocol/get-adcp-capabilities-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request payload for get_adcp_capabilities task. Protocol-level capability discovery that works across all AdCP protocols.",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "protocols": {
       "description": "Specific protocols to query capabilities for. If omitted, returns capabilities for all supported protocols.",
diff --git a/schemas/cache/protocol/get-adcp-capabilities-response.json b/schemas/cache/protocol/get-adcp-capabilities-response.json
index 650064fc4..964f25772 100644
--- a/schemas/cache/protocol/get-adcp-capabilities-response.json
+++ b/schemas/cache/protocol/get-adcp-capabilities-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/protocol/get-adcp-capabilities-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_adcp_capabilities task. Protocol-level capability discovery across all AdCP protocols. Each domain protocol has its own capability section.",
@@ -76,7 +75,7 @@
         "available_uses": {
           "description": "Rights uses available across this agent's roster",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/right-use.json"
+            "$ref": "../enums/right-use.json"
           },
           "type": "array"
         },
@@ -100,7 +99,7 @@
         "right_types": {
           "description": "Types of rights available through this agent",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/right-type.json"
+            "$ref": "../enums/right-type.json"
           },
           "type": "array"
         },
@@ -113,7 +112,7 @@
       "type": "object"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "creative": {
       "additionalProperties": true,
@@ -144,12 +143,12 @@
     "errors": {
       "description": "Task-specific errors and warnings",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "extensions_supported": {
       "description": "Extension namespaces this agent supports. Buyers can expect meaningful data in ext.{namespace} fields on responses from this agent. Extension schemas are published in the AdCP extension registry.",
@@ -334,7 +333,7 @@
             "supported_uid_types": {
               "description": "Universal ID types accepted for audience matching (MAIDs, RampID, UID2, etc.). MAID support varies significantly by platform \u2014 check this field before sending uids with type: maid.",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/uid-type.json"
+                "$ref": "../enums/uid-type.json"
               },
               "minItems": 1,
               "type": "array"
@@ -356,7 +355,7 @@
             "supported_channels": {
               "description": "Channels for which the seller can provide content artifacts. Helps buyers understand which parts of a mixed-channel buy will have content standards coverage.",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+                "$ref": "../enums/channels.json"
               },
               "minItems": 1,
               "type": "array"
@@ -382,13 +381,13 @@
                 "additionalProperties": true,
                 "properties": {
                   "event_type": {
-                    "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json",
+                    "$ref": "../enums/event-type.json",
                     "description": "Event type this window applies to, or omit for default window"
                   },
                   "post_click": {
                     "description": "Available post-click attribution windows (e.g. [{\"interval\": 7, \"unit\": \"days\"}])",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                      "$ref": "../core/duration.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -396,7 +395,7 @@
                   "post_view": {
                     "description": "Available post-view attribution windows (e.g. [{\"interval\": 1, \"unit\": \"days\"}])",
                     "items": {
-                      "$ref": "/schemas/3.0.0-rc.3/core/duration.json"
+                      "$ref": "../core/duration.json"
                     },
                     "minItems": 1,
                     "type": "array"
@@ -416,7 +415,7 @@
             "supported_action_sources": {
               "description": "Action sources this seller accepts events from",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/action-source.json"
+                "$ref": "../enums/action-source.json"
               },
               "minItems": 1,
               "type": "array"
@@ -424,7 +423,7 @@
             "supported_event_types": {
               "description": "Event types this seller can track and attribute. If omitted, all standard event types are supported.",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/event-type.json"
+                "$ref": "../enums/event-type.json"
               },
               "minItems": 1,
               "type": "array"
@@ -444,7 +443,7 @@
             "supported_uid_types": {
               "description": "Universal ID types accepted for user matching",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/uid-type.json"
+                "$ref": "../enums/uid-type.json"
               },
               "minItems": 1,
               "type": "array"
@@ -506,7 +505,7 @@
                     "verification_methods": {
                       "description": "Age verification methods this seller supports",
                       "items": {
-                        "$ref": "/schemas/3.0.0-rc.3/enums/age-verification-method.json"
+                        "$ref": "../enums/age-verification-method.json"
                       },
                       "type": "array"
                     }
@@ -619,7 +618,7 @@
                     "transport_modes": {
                       "description": "Transport modes supported for travel_time isochrones. Only relevant when travel_time is true.",
                       "items": {
-                        "$ref": "/schemas/3.0.0-rc.3/enums/transport-mode.json"
+                        "$ref": "../enums/transport-mode.json"
                       },
                       "minItems": 1,
                       "type": "array"
@@ -719,7 +718,7 @@
           "type": "object"
         },
         "features": {
-          "$ref": "/schemas/3.0.0-rc.3/core/media-buy-features.json"
+          "$ref": "../core/media-buy-features.json"
         },
         "portfolio": {
           "description": "Information about the seller's media inventory portfolio",
@@ -737,7 +736,7 @@
             "primary_channels": {
               "description": "Primary advertising channels in this portfolio",
               "items": {
-                "$ref": "/schemas/3.0.0-rc.3/enums/channels.json"
+                "$ref": "../enums/channels.json"
               },
               "type": "array"
             },
@@ -803,7 +802,7 @@
         "supported_pricing_models": {
           "description": "Pricing models this seller supports across its product portfolio. Buyers can use this for pre-flight filtering before querying individual products. Individual products may support a subset of these models.",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/pricing-model.json"
+            "$ref": "../enums/pricing-model.json"
           },
           "minItems": 1,
           "type": "array",
@@ -849,7 +848,7 @@
           "type": "string"
         },
         "capabilities": {
-          "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-capabilities.json",
+          "$ref": "../sponsored-intelligence/si-capabilities.json",
           "description": "Modalities, components, and commerce capabilities"
         },
         "endpoint": {
diff --git a/schemas/cache/signals/activate-signal-request.json b/schemas/cache/signals/activate-signal-request.json
index 26b3b4026..50be3033e 100644
--- a/schemas/cache/signals/activate-signal-request.json
+++ b/schemas/cache/signals/activate-signal-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/signals/activate-signal-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request parameters for activating or deactivating a signal on deployment targets",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account for this activation. Associates with a commercial relationship established via sync_accounts."
     },
     "action": {
@@ -18,18 +17,18 @@
       "type": "string"
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "destinations": {
       "description": "Target destination(s) for activation. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/destination.json"
+        "$ref": "../core/destination.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. Prevents duplicate activations on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
diff --git a/schemas/cache/signals/activate-signal-response.json b/schemas/cache/signals/activate-signal-response.json
index efe842214..f31b04736 100644
--- a/schemas/cache/signals/activate-signal-response.json
+++ b/schemas/cache/signals/activate-signal-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/signals/activate-signal-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "description": "Response payload for activate_signal task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - the signal is either fully activated or not activated at all.",
   "oneOf": [
@@ -13,17 +12,17 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "deployments": {
           "description": "Array of deployment results for each deployment target",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/deployment.json"
+            "$ref": "../core/deployment.json"
           },
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         },
         "sandbox": {
           "description": "When true, this response contains simulated data from sandbox mode.",
@@ -55,18 +54,18 @@
       },
       "properties": {
         "context": {
-          "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+          "$ref": "../core/context.json"
         },
         "errors": {
           "description": "Array of errors explaining why activation failed (e.g., platform connectivity issues, signal definition problems, authentication failures)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+            "$ref": "../core/error.json"
           },
           "minItems": 1,
           "type": "array"
         },
         "ext": {
-          "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+          "$ref": "../core/ext.json"
         }
       },
       "required": [
diff --git a/schemas/cache/signals/get-signals-request.json b/schemas/cache/signals/get-signals-request.json
index 64507f2f9..ff90cc542 100644
--- a/schemas/cache/signals/get-signals-request.json
+++ b/schemas/cache/signals/get-signals-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/signals/get-signals-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -17,11 +16,11 @@
   "description": "Request parameters for discovering and refining signals. Use signal_spec for natural language discovery, signal_ids for exact lookups, or both to refine previous results (signal_ids anchor the starting set, signal_spec guides adjustments).",
   "properties": {
     "account": {
-      "$ref": "/schemas/3.0.0-rc.3/core/account-ref.json",
+      "$ref": "../core/account-ref.json",
       "description": "Account for this request. When provided, the signals agent returns per-account pricing options if configured."
     },
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "countries": {
       "description": "Countries where signals will be used (ISO 3166-1 alpha-2 codes). When omitted, no geographic filter is applied.",
@@ -35,16 +34,16 @@
     "destinations": {
       "description": "Filter signals to those activatable on specific agents/platforms. When omitted, returns all signals available on the current agent. If the authenticated caller matches one of these destinations, activation keys will be included in the response.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/destination.json"
+        "$ref": "../core/destination.json"
       },
       "minItems": 1,
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "filters": {
-      "$ref": "/schemas/3.0.0-rc.3/core/signal-filters.json"
+      "$ref": "../core/signal-filters.json"
     },
     "max_results": {
       "description": "Maximum number of results to return",
@@ -52,12 +51,12 @@
       "type": "integer"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-request.json"
+      "$ref": "../core/pagination-request.json"
     },
     "signal_ids": {
       "description": "Specific signals to look up by data provider and ID. Returns exact matches from the data provider's catalog. When combined with signal_spec, these signals anchor the starting set and signal_spec guides adjustments.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json"
+        "$ref": "../core/signal-id.json"
       },
       "minItems": 1,
       "type": "array"
diff --git a/schemas/cache/signals/get-signals-response.json b/schemas/cache/signals/get-signals-response.json
index 1d06e49c4..72b0e0efd 100644
--- a/schemas/cache/signals/get-signals-response.json
+++ b/schemas/cache/signals/get-signals-response.json
@@ -1,24 +1,23 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/signals/get-signals-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response payload for get_signals task",
   "properties": {
     "context": {
-      "$ref": "/schemas/3.0.0-rc.3/core/context.json"
+      "$ref": "../core/context.json"
     },
     "errors": {
       "description": "Task-specific errors and warnings (e.g., signal discovery or pricing issues)",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "pagination": {
-      "$ref": "/schemas/3.0.0-rc.3/core/pagination-response.json"
+      "$ref": "../core/pagination-response.json"
     },
     "sandbox": {
       "description": "When true, this response contains simulated data from sandbox mode.",
@@ -49,7 +48,7 @@
           "deployments": {
             "description": "Array of deployment targets",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/deployment.json"
+              "$ref": "../core/deployment.json"
             },
             "type": "array"
           },
@@ -64,7 +63,7 @@
           "pricing_options": {
             "description": "Pricing options available for this signal. The buyer selects one and passes its pricing_option_id in report_usage for billing verification.",
             "items": {
-              "$ref": "/schemas/3.0.0-rc.3/core/signal-pricing-option.json"
+              "$ref": "../core/signal-pricing-option.json"
             },
             "minItems": 1,
             "type": "array"
@@ -93,15 +92,15 @@
             "type": "string"
           },
           "signal_id": {
-            "$ref": "/schemas/3.0.0-rc.3/core/signal-id.json",
+            "$ref": "../core/signal-id.json",
             "description": "Universal signal identifier referencing the data provider's catalog. Use this to verify authorization and look up signal definitions."
           },
           "signal_type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/signal-catalog-type.json",
+            "$ref": "../enums/signal-catalog-type.json",
             "description": "Catalog type of signal (marketplace, custom, owned)"
           },
           "value_type": {
-            "$ref": "/schemas/3.0.0-rc.3/enums/signal-value-type.json",
+            "$ref": "../enums/signal-value-type.json",
             "description": "The data type of this signal's values (binary, categorical, numeric)"
           }
         },
diff --git a/schemas/cache/sponsored-intelligence/si-capabilities.json b/schemas/cache/sponsored-intelligence/si-capabilities.json
index de341cbaa..b989a2601 100644
--- a/schemas/cache/sponsored-intelligence/si-capabilities.json
+++ b/schemas/cache/sponsored-intelligence/si-capabilities.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-capabilities.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Capabilities that a brand agent declares or a host supports",
diff --git a/schemas/cache/sponsored-intelligence/si-get-offering-request.json b/schemas/cache/sponsored-intelligence/si-get-offering-request.json
index 63506c612..04fe541e2 100644
--- a/schemas/cache/sponsored-intelligence/si-get-offering-request.json
+++ b/schemas/cache/sponsored-intelligence/si-get-offering-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-get-offering-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Get offering details and availability before session handoff. Returns offering information, availability status, and optionally matching products based on context.",
@@ -9,7 +8,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "include_products": {
       "default": false,
diff --git a/schemas/cache/sponsored-intelligence/si-get-offering-response.json b/schemas/cache/sponsored-intelligence/si-get-offering-response.json
index 7048954f6..6b6fa4ffa 100644
--- a/schemas/cache/sponsored-intelligence/si-get-offering-response.json
+++ b/schemas/cache/sponsored-intelligence/si-get-offering-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-get-offering-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Offering details, availability status, and optionally matching products. Use the offering_token in si_initiate_session for correlation.",
@@ -23,12 +22,12 @@
     "errors": {
       "description": "Errors during offering lookup",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "matching_products": {
       "description": "Products matching the request context. Only included if include_products was true.",
diff --git a/schemas/cache/sponsored-intelligence/si-identity.json b/schemas/cache/sponsored-intelligence/si-identity.json
index 50a25bae7..fdd55bd90 100644
--- a/schemas/cache/sponsored-intelligence/si-identity.json
+++ b/schemas/cache/sponsored-intelligence/si-identity.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-identity.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "User identity shared with brand agent (with explicit consent)",
diff --git a/schemas/cache/sponsored-intelligence/si-initiate-session-request.json b/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
index 0b1fbb793..b9fe73499 100644
--- a/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
+++ b/schemas/cache/sponsored-intelligence/si-initiate-session-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-initiate-session-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Host initiates a session with a brand agent",
@@ -9,7 +8,7 @@
       "type": "string"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "idempotency_key": {
       "description": "Client-generated unique key for this request. Prevents duplicate session creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.",
@@ -18,7 +17,7 @@
       "type": "string"
     },
     "identity": {
-      "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-identity.json"
+      "$ref": "si-identity.json"
     },
     "media_buy_id": {
       "description": "AdCP media buy ID if session was triggered by advertising",
@@ -37,7 +36,7 @@
       "type": "string"
     },
     "supported_capabilities": {
-      "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-capabilities.json",
+      "$ref": "si-capabilities.json",
       "description": "What capabilities the host supports"
     }
   },
diff --git a/schemas/cache/sponsored-intelligence/si-initiate-session-response.json b/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
index 132fbe407..cb594f66e 100644
--- a/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
+++ b/schemas/cache/sponsored-intelligence/si-initiate-session-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-initiate-session-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Brand agent's response to session initiation",
@@ -7,15 +6,15 @@
     "errors": {
       "description": "Errors during session initiation",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "negotiated_capabilities": {
-      "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-capabilities.json",
+      "$ref": "si-capabilities.json",
       "description": "Intersection of brand and host capabilities for this session"
     },
     "response": {
@@ -29,7 +28,7 @@
         "ui_elements": {
           "description": "Visual components to render",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-ui-element.json"
+            "$ref": "si-ui-element.json"
           },
           "type": "array"
         }
@@ -41,7 +40,7 @@
       "type": "string"
     },
     "session_status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/si-session-status.json",
+      "$ref": "../enums/si-session-status.json",
       "description": "Current session lifecycle state. Returned in initiation, message, and termination responses."
     },
     "session_ttl_seconds": {
diff --git a/schemas/cache/sponsored-intelligence/si-send-message-request.json b/schemas/cache/sponsored-intelligence/si-send-message-request.json
index 3f59f3fd9..29a656021 100644
--- a/schemas/cache/sponsored-intelligence/si-send-message-request.json
+++ b/schemas/cache/sponsored-intelligence/si-send-message-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-send-message-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "anyOf": [
@@ -32,7 +31,7 @@
       "type": "object"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "message": {
       "description": "User's message to the brand agent",
diff --git a/schemas/cache/sponsored-intelligence/si-send-message-response.json b/schemas/cache/sponsored-intelligence/si-send-message-response.json
index 1bc04322c..a947fdad5 100644
--- a/schemas/cache/sponsored-intelligence/si-send-message-response.json
+++ b/schemas/cache/sponsored-intelligence/si-send-message-response.json
@@ -1,17 +1,16 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-send-message-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Brand agent's response to a user message",
   "properties": {
     "errors": {
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "handoff": {
       "additionalProperties": true,
@@ -86,14 +85,14 @@
           "type": "string"
         },
         "surface": {
-          "$ref": "/schemas/3.0.0-rc.3/a2ui/surface.json",
+          "$ref": "../a2ui/surface.json",
           "description": "A2UI surface with interactive components"
         },
         "ui_elements": {
           "deprecated": true,
           "description": "Visual components to render (DEPRECATED: use surface instead)",
           "items": {
-            "$ref": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-ui-element.json"
+            "$ref": "si-ui-element.json"
           },
           "type": "array"
         }
@@ -105,7 +104,7 @@
       "type": "string"
     },
     "session_status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/si-session-status.json",
+      "$ref": "../enums/si-session-status.json",
       "description": "Current session status. On a successful response, one of: active, pending_handoff, or complete. Terminated sessions return error codes (SESSION_NOT_FOUND or SESSION_TERMINATED) instead of a success response."
     }
   },
diff --git a/schemas/cache/sponsored-intelligence/si-terminate-session-request.json b/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
index 382b90f48..c4ac90d2f 100644
--- a/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
+++ b/schemas/cache/sponsored-intelligence/si-terminate-session-request.json
@@ -1,11 +1,10 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-terminate-session-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Request to terminate an SI session",
   "properties": {
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "reason": {
       "description": "Reason for termination",
diff --git a/schemas/cache/sponsored-intelligence/si-terminate-session-response.json b/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
index bf9d892de..e7b2b2a38 100644
--- a/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
+++ b/schemas/cache/sponsored-intelligence/si-terminate-session-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-terminate-session-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Confirmation of session termination",
@@ -32,12 +31,12 @@
     },
     "errors": {
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/error.json"
+        "$ref": "../core/error.json"
       },
       "type": "array"
     },
     "ext": {
-      "$ref": "/schemas/3.0.0-rc.3/core/ext.json"
+      "$ref": "../core/ext.json"
     },
     "follow_up": {
       "additionalProperties": true,
@@ -64,7 +63,7 @@
       "type": "string"
     },
     "session_status": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/si-session-status.json",
+      "$ref": "../enums/si-session-status.json",
       "description": "Resulting session state. 'complete' for handoff_transaction/handoff_complete, 'terminated' for user_exit/session_timeout/host_terminated."
     },
     "terminated": {
diff --git a/schemas/cache/sponsored-intelligence/si-ui-element.json b/schemas/cache/sponsored-intelligence/si-ui-element.json
index 53cca0bfc..13014398f 100644
--- a/schemas/cache/sponsored-intelligence/si-ui-element.json
+++ b/schemas/cache/sponsored-intelligence/si-ui-element.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/sponsored-intelligence/si-ui-element.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "allOf": [
diff --git a/schemas/cache/tmp/available-package.json b/schemas/cache/tmp/available-package.json
index 21d1b4a00..8ada1c6a0 100644
--- a/schemas/cache/tmp/available-package.json
+++ b/schemas/cache/tmp/available-package.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/available-package.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "A package available for contextual matching. Synced to providers at media buy creation time \u2014 not sent per request. Providers cache this metadata and use it when evaluating context match requests for the placement.",
@@ -7,14 +6,14 @@
     "catalogs": {
       "description": "The buyer's catalogs attached to this package, with selectors (ids, gtins, tags, category, query) scoping which items are in play. References synced catalogs by catalog_id. The provider resolves items from its cached copy.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/catalog.json"
+        "$ref": "../core/catalog.json"
       },
       "type": "array"
     },
     "format_ids": {
       "description": "Creative format identifiers eligible for this package. Uses the standard AdCP format-id object with agent_url and id for unambiguous format resolution across namespaces.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/core/format-id.json"
+        "$ref": "../core/format-id.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/tmp/context-match-request.json b/schemas/cache/tmp/context-match-request.json
index 8f75ad1e0..ce113527e 100644
--- a/schemas/cache/tmp/context-match-request.json
+++ b/schemas/cache/tmp/context-match-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/context-match-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Sent by publisher to router or provider to evaluate packages against contextual signals. The provider uses its synced package set for the placement. MUST NOT contain user identity. The request_id MUST NOT correlate with any identity match request_id.",
@@ -10,7 +9,7 @@
       "type": "string"
     },
     "artifact": {
-      "$ref": "/schemas/3.0.0-rc.3/content-standards/artifact.json",
+      "$ref": "../content-standards/artifact.json",
       "description": "Full content artifact adjacent to this ad opportunity. Same schema used for content standards evaluation. The publisher sends the artifact when they want the buyer to evaluate the full content. Contractual protections govern buyer use. TEE deployment upgrades contractual trust to cryptographic verification. Publishers MUST NOT include asset access credentials (bearer tokens, service accounts) \u2014 the router fans out to multiple buyer agents. For secured assets, use signed URLs with short expiry. Routers MUST strip access fields from artifacts before forwarding."
     },
     "artifact_refs": {
@@ -138,7 +137,7 @@
           "description": "Metro area, using the same classification systems as AdCP targeting.",
           "properties": {
             "system": {
-              "$ref": "/schemas/3.0.0-rc.3/enums/metro-system.json",
+              "$ref": "../enums/metro-system.json",
               "description": "Metro area classification system (e.g., 'nielsen_dma', 'uk_itl2')."
             },
             "value": {
@@ -174,7 +173,7 @@
       "type": "string"
     },
     "property_id": {
-      "$ref": "/schemas/3.0.0-rc.3/core/property-id.json",
+      "$ref": "../core/property-id.json",
       "description": "Publisher's human-readable property slug (e.g., 'cnn_homepage'). Optional when property_rid is present. Useful for logging and debugging."
     },
     "property_rid": {
@@ -183,7 +182,7 @@
       "type": "string"
     },
     "property_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/property-type.json",
+      "$ref": "../enums/property-type.json",
       "description": "Type of the publisher property"
     },
     "protocol_version": {
diff --git a/schemas/cache/tmp/context-match-response.json b/schemas/cache/tmp/context-match-response.json
index cba671574..940bb70de 100644
--- a/schemas/cache/tmp/context-match-response.json
+++ b/schemas/cache/tmp/context-match-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/context-match-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response from router or provider with offers for matched packages. An empty offers array means no packages matched. For simple GAM integration, package_id flows as a macro via signals. For rich integrations, the offer includes brand, price, summary, and optionally an inline creative manifest.",
@@ -13,7 +12,7 @@
     "offers": {
       "description": "Offers from the buyer, one per activated package. An empty array means no packages matched. For simple activation, each offer has just package_id. For richer responses, offers include brand, price, summary, and creative manifest.",
       "items": {
-        "$ref": "/schemas/3.0.0-rc.3/tmp/offer.json"
+        "$ref": "offer.json"
       },
       "type": "array"
     },
diff --git a/schemas/cache/tmp/error.json b/schemas/cache/tmp/error.json
index 148b46df6..3cf7c8b85 100644
--- a/schemas/cache/tmp/error.json
+++ b/schemas/cache/tmp/error.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/error.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Error response from a TMP provider or router. Returned instead of a normal response when the provider cannot process the request. Distinguishes errors from empty results (an empty offers array is a valid response meaning no matches, not an error).",
diff --git a/schemas/cache/tmp/identity-match-request.json b/schemas/cache/tmp/identity-match-request.json
index 191a09bf8..440cc2297 100644
--- a/schemas/cache/tmp/identity-match-request.json
+++ b/schemas/cache/tmp/identity-match-request.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/identity-match-request.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Sent by publisher to evaluate user eligibility for packages using an opaque identity token. MUST NOT contain page context. The request_id MUST NOT correlate with any context match request_id. The package_ids MUST include ALL active packages for the buyer, not just those on the current page, to prevent set-correlation attacks.",
@@ -55,7 +54,7 @@
       "type": "string"
     },
     "uid_type": {
-      "$ref": "/schemas/3.0.0-rc.3/enums/uid-type.json",
+      "$ref": "../enums/uid-type.json",
       "description": "Type of the user identifier. Tells the buyer which identity graph to resolve against, avoiding trial-and-error matching."
     },
     "user_token": {
diff --git a/schemas/cache/tmp/identity-match-response.json b/schemas/cache/tmp/identity-match-response.json
index fe4d7fc9e..628c6869b 100644
--- a/schemas/cache/tmp/identity-match-response.json
+++ b/schemas/cache/tmp/identity-match-response.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/identity-match-response.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "Response indicating which packages the user is eligible for. The ttl_sec field defines a caching contract: the router caches this response and returns cached eligibility without re-querying the buyer during the TTL window.",
diff --git a/schemas/cache/tmp/offer-price.json b/schemas/cache/tmp/offer-price.json
index 1f0f7739f..caaeaf555 100644
--- a/schemas/cache/tmp/offer-price.json
+++ b/schemas/cache/tmp/offer-price.json
@@ -1,5 +1,4 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/offer-price.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": false,
   "description": "Lightweight price for a TMP offer. Used when the product supports variable pricing and the buyer specifies a price at match time.",
diff --git a/schemas/cache/tmp/offer.json b/schemas/cache/tmp/offer.json
index fc5e52ed4..f7aa6c2c2 100644
--- a/schemas/cache/tmp/offer.json
+++ b/schemas/cache/tmp/offer.json
@@ -1,15 +1,14 @@
 {
-  "$id": "/schemas/3.0.0-rc.3/tmp/offer.json",
   "$schema": "http://json-schema.org/draft-07/schema#",
   "additionalProperties": true,
   "description": "A buyer's response to a context match request. Generalizes package activation \u2014 a simple activation is an offer with just package_id. A rich response includes brand, price, summary, and optionally an inline creative manifest.",
   "properties": {
     "brand": {
-      "$ref": "/schemas/3.0.0-rc.3/core/brand-ref.json",
+      "$ref": "../core/brand-ref.json",
       "description": "Brand for this offer. Required when the product allows dynamic brands (brand selected at match time rather than fixed on the package). For single-brand packages, the brand is already known from the media buy."
     },
     "creative_manifest": {
-      "$ref": "/schemas/3.0.0-rc.3/core/creative-manifest.json",
+      "$ref": "../core/creative-manifest.json",
       "description": "Full creative details, inline. When present, the publisher has everything needed to render. Inline for small creatives (markdown, product card). For large creatives (VAST, video), the manifest references external assets via URLs."
     },
     "macros": {
@@ -24,7 +23,7 @@
       "type": "string"
     },
     "price": {
-      "$ref": "/schemas/3.0.0-rc.3/tmp/offer-price.json",
+      "$ref": "offer-price.json",
       "description": "Price for this offer. Only present when the product supports variable pricing. For fixed-price packages, price is already set on the media buy."
     },
     "summary": {
diff --git a/scripts/consolidate_exports.py b/scripts/consolidate_exports.py
index e7a13c2cf..6803020e1 100644
--- a/scripts/consolidate_exports.py
+++ b/scripts/consolidate_exports.py
@@ -277,6 +277,13 @@ def _module_sort_key(p: Path) -> tuple[int, str]:
 
     # Add model_rebuild() calls for types with forward references
     # This resolves Pydantic forward references after all types are imported
+    rebuild_candidates = [
+        "CreativeManifest",
+        "PreviewCreativeRequest1",
+        "PreviewCreativeRequest2",
+    ]
+    rebuild_types = [t for t in rebuild_candidates if t in all_exports]
+
     rebuild_lines = [
         "",
         "# Rebuild models with forward references",
@@ -287,11 +294,10 @@ def _module_sort_key(p: Path) -> tuple[int, str]:
         "",
         "# Rebuild models that reference other models via forward refs",
         "# Note: only call model_rebuild() on actual classes, not Union type aliases",
-        "CreativeManifest.model_rebuild()",
-        "PreviewCreativeRequest1.model_rebuild()",
-        "PreviewCreativeRequest2.model_rebuild()",
-        "",
     ]
+    for t in rebuild_types:
+        rebuild_lines.append(f"{t}.model_rebuild()")
+    rebuild_lines.append("")
     lines.extend(rebuild_lines)
 
     return "\n".join(lines)
diff --git a/skills/build-seller-agent/SKILL.md b/skills/build-seller-agent/SKILL.md
index 39734842f..964106819 100644
--- a/skills/build-seller-agent/SKILL.md
+++ b/skills/build-seller-agent/SKILL.md
@@ -58,8 +58,8 @@ Pricing models:
 One file. Subclass `ADCPHandler`, override the tools you support, call `serve()`.
 
 ```python
-from adcp.server import ADCPHandler, serve
-from adcp.server.responses import capabilities_response, products_response
+from adcp.server import ADCPHandler, serve, adcp_error, resolve_account, inject_context
+from adcp.server.responses import capabilities_response, products_response, media_buy_response
 from adcp.server.test_controller import TestControllerStore
 
 class MySeller(ADCPHandler):
@@ -74,6 +74,125 @@ class MySeller(ADCPHandler):
 serve(MySeller(), name="my-seller", test_controller=MyStore())
 ```
 
+## Product Construction Example
+
+```python
+PRODUCTS = [
+    {
+        "product_id": "premium-homepage",
+        "name": "Homepage Takeover",
+        "description": "Full-page homepage placement with 100% SOV",
+        "delivery_type": "guaranteed",
+        "publisher_properties": [
+            {"publisher_domain": "example.com", "selection_type": "all"}
+        ],
+        "format_ids": [
+            {"agent_url": "http://localhost:3001/mcp", "id": "display_970x250"}
+        ],
+        "pricing_options": [
+            {
+                "pricing_option_id": "po-cpm-homepage",
+                "pricing_model": "cpm",
+                "floor_price": 15.00,
+                "currency": "USD",
+            }
+        ],
+    },
+]
+```
+
+## DX Helpers
+
+The SDK provides helpers that eliminate common boilerplate. Import from `adcp.server`:
+
+| Helper | What it does |
+|--------|-------------|
+| `adcp_error(code, message, field=, suggestion=)` | Structured error with auto-recovery classification (20+ standard codes) |
+| `media_buy_response(..., status="active")` | Auto-populates `valid_actions` from status, auto-sets `revision` and `confirmed_at` |
+| `cancel_media_buy_response(id, "buyer")` | Auto-sets `canceled_at`, `status`, `valid_actions=[]` |
+| `resolve_account(params, resolver)` | Auto-resolves AccountReference, returns ACCOUNT_NOT_FOUND if missing |
+| `inject_context(params, response)` | Echoes `context` field from request to response (ADCP requirement) |
+| `valid_actions_for_status(status)` | Maps status to valid buyer actions |
+| `is_terminal_status(status)` | True for completed/rejected/canceled |
+| `AccountError(code, message, suggestion=)` | Raise from resolver for suspended/payment/ambiguous accounts |
+
+## Account Resolution Pattern
+
+Sellers that require accounts should resolve them before processing:
+
+```python
+from adcp.server import resolve_account, AccountError
+
+class MySeller(ADCPHandler):
+    async def _resolve(self, ref):
+        account = db.find(ref)
+        if not account:
+            return None  # auto-returns ACCOUNT_NOT_FOUND
+        if account.status == "suspended":
+            raise AccountError("ACCOUNT_SUSPENDED")
+        if account.status == "payment_required":
+            raise AccountError("ACCOUNT_PAYMENT_REQUIRED",
+                suggestion="Update payment at https://billing.example.com")
+        return account
+
+    async def create_media_buy(self, params, context=None):
+        account, error = await resolve_account(params, self._resolve)
+        if error:
+            return error  # structured error response
+        # account is guaranteed non-None here
+        ...
+```
+
+## Proposal Workflow (Guaranteed Deals)
+
+For premium/guaranteed inventory, buyers negotiate before committing. The flow:
+
+1. Buyer calls `get_products` with `buying_mode: "refine"` and a `proposal`
+2. Seller returns products with a `proposal` containing `proposal_id` and `status: "draft"`
+3. Buyer refines (adjusts budget, dates, packages) by calling `get_products` again with the `proposal_id`
+4. When satisfied, buyer calls `create_media_buy` with the committed `proposal_id`
+5. Seller validates the proposal and creates the media buy
+
+```python
+async def get_products(self, params, context=None):
+    buying_mode = params.get("buying_mode", "brief")
+
+    if buying_mode == "refine":
+        proposal = params.get("proposal", {})
+        proposal_id = proposal.get("proposal_id") or f"prop-{uuid.uuid4().hex[:8]}"
+        # Store/update the proposal draft
+        proposals[proposal_id] = {
+            "status": "draft",
+            "packages": proposal.get("packages", []),
+        }
+        return products_response(PRODUCTS, proposal={
+            "proposal_id": proposal_id,
+            "status": "draft",
+        })
+
+    # Default brief mode - return all matching products
+    return products_response(PRODUCTS)
+
+async def create_media_buy(self, params, context=None):
+    proposal_id = params.get("proposal_id")
+    if proposal_id:
+        proposal = proposals.get(proposal_id)
+        if not proposal:
+            return adcp_error("INVALID_REQUEST", "Unknown proposal",
+                              field="proposal_id")
+        if proposal.get("status") != "draft":
+            return adcp_error("PROPOSAL_NOT_COMMITTED",
+                              "Proposal must be in draft status")
+    # ... create the media buy from the proposal
+```
+
+For IO-required deals, return `IO_REQUIRED` from `create_media_buy` until the IO is signed:
+```python
+if product["delivery_type"] == "guaranteed" and not has_signed_io(account):
+    return adcp_error("IO_REQUIRED",
+                      suggestion="Sign the IO at https://seller.example.com/io")
+```
+
 ## Tools and Required Response Shapes
 
 Every tool below uses a response builder from `adcp.server.responses`. Use the builders — never return raw dicts.
@@ -138,21 +257,34 @@ async def get_products(self, params, context=None):
 
 **`create_media_buy`**
 ```python
+from adcp.server import adcp_error, inject_context
 from adcp.server.responses import media_buy_response
 
 async def create_media_buy(self, params, context=None):
+    if not params.get("packages"):
+        return adcp_error("INVALID_REQUEST", "At least one package required",
+                          field="packages")
+
     packages = []
     for pkg in params.get("packages", []):
+        product_id = pkg.get("product_id")
+        if product_id not in {p["product_id"] for p in PRODUCTS}:
+            return adcp_error("PRODUCT_NOT_FOUND",
+                              f"Product '{product_id}' not found",
+                              field="product_id",
+                              suggestion="Use get_products to discover available products")
         packages.append({
             "package_id": f"pkg-{uuid.uuid4().hex[:8]}",
-            "product_id": pkg.get("product_id"),
+            "product_id": product_id,
             "pricing_option_id": pkg.get("pricing_option_id"),
             "budget": pkg.get("budget"),
         })
     mb_id = f"mb-{uuid.uuid4().hex[:8]}"
     # Store so get_media_buys and test controller can find it
     media_buys[mb_id] = {"status": "active", "currency": "USD", "packages": packages}
-    return media_buy_response(mb_id, packages)
+    # status="active" auto-populates valid_actions, revision, confirmed_at
+    resp = media_buy_response(mb_id, packages, status="active")
+    return inject_context(params, resp)
 ```
 
 **`get_media_buys`**
@@ -174,6 +306,48 @@ async def get_media_buys(self, params, context=None):
     return media_buys_response(results)
 ```
 
+**`update_media_buy`** — handles pause, resume, cancel, budget changes, package updates.
+```python
+from adcp.server import adcp_error, inject_context, cancel_media_buy_response
+from adcp.server.responses import update_media_buy_response
+
+async def update_media_buy(self, params, context=None):
+    mb_id = params.get("media_buy_id")
+    mb = media_buys.get(mb_id)
+    if not mb:
+        return adcp_error("MEDIA_BUY_NOT_FOUND", f"Media buy {mb_id} not found")
+
+    # Check revision for optimistic concurrency
+    if params.get("revision") and params["revision"] != mb.get("revision", 1):
+        return adcp_error("CONFLICT", "Revision mismatch - refetch and retry")
+
+    status = mb["status"]
+
+    # Handle pause/resume/cancel
+    if params.get("paused") is True and status == "active":
+        mb["status"] = "paused"
+    elif params.get("paused") is False and status == "paused":
+        mb["status"] = "active"
+    elif params.get("canceled") is True:
+        if status in ("completed", "rejected", "canceled"):
+            return adcp_error("NOT_CANCELLABLE",
+                              f"Cannot cancel a {status} media buy")
+        mb["status"] = "canceled"
+        return cancel_media_buy_response(mb_id, "buyer")
+
+    # Handle package updates
+    if params.get("packages"):
+        for pkg_update in params["packages"]:
+            pkg_id = pkg_update.get("package_id")
+            # Apply budget, dates, etc.
+
+    mb["revision"] = mb.get("revision", 1) + 1
+    resp = update_media_buy_response(
+        mb_id, status=mb["status"], revision=mb["revision"]
+    )
+    return inject_context(params, resp)
+```
+
 **`list_creative_formats`**
 ```python
 from adcp.server.responses import creative_formats_response
@@ -294,22 +468,33 @@ return capabilities_response(["media_buy", "compliance_testing"])
 
 ## SDK Quick Reference
 
+**Response builders** (from `adcp.server.responses`):
+
 | Function | Usage |
 |----------|-------|
-| `serve(handler, test_controller=store)` | Start server on `:3001/mcp` with test controller |
-| `create_mcp_server(handler)` | Create server without starting (for customization) |
 | `capabilities_response(protocols)` | `get_adcp_capabilities` response |
 | `products_response(products)` | `get_products` response |
-| `media_buy_response(id, packages)` | `create_media_buy` success response |
+| `media_buy_response(id, packages, status=)` | `create_media_buy` success (auto-populates valid_actions) |
 | `media_buys_response(media_buys)` | `get_media_buys` response |
-| `delivery_response(deliveries, reporting_period=...)` | `get_media_buy_delivery` response |
+| `update_media_buy_response(id, status=)` | `update_media_buy` success (auto-populates valid_actions) |
+| `delivery_response(deliveries, reporting_period=)` | `get_media_buy_delivery` response |
 | `sync_accounts_response(accounts)` | `sync_accounts` response |
 | `sync_governance_response(accounts)` | `sync_governance` response |
 | `creative_formats_response(formats)` | `list_creative_formats` response |
 | `sync_creatives_response(creatives)` | `sync_creatives` response |
-| `error_response(code, message)` | Structured error |
 
-Import handlers from `adcp.server`. Import response builders from `adcp.server.responses`. Import types from `adcp.types`.
+**DX helpers** (from `adcp.server`):
+
+| Function | Usage |
+|----------|-------|
+| `adcp_error(code, message, field=, suggestion=)` | Structured error with auto-recovery |
+| `cancel_media_buy_response(id, "buyer"/"seller")` | Cancellation with auto-defaults |
+| `resolve_account(params, resolver)` | Account resolution with auto-error |
+| `inject_context(params, response)` | Context passthrough (ADCP requirement) |
+| `valid_actions_for_status(status)` | Status-to-actions mapping |
+| `serve(handler, test_controller=store)` | Start server on `:3001/mcp` |
+
+Import helpers from `adcp.server`. Import response builders from `adcp.server.responses`. Import types from `adcp.types`.
 
 ## Validation
 
diff --git a/skills/build-signals-agent/SKILL.md b/skills/build-signals-agent/SKILL.md
index 5269ed511..5b9f4d5aa 100644
--- a/skills/build-signals-agent/SKILL.md
+++ b/skills/build-signals-agent/SKILL.md
@@ -53,7 +53,7 @@ At least one pricing option per signal:
 One file. Subclass `ADCPHandler`, override the tools you support, call `serve()`.
 
 ```python
-from adcp.server import ADCPHandler, serve
+from adcp.server import ADCPHandler, serve, adcp_error, inject_context
 from adcp.server.responses import capabilities_response, signals_response, activate_signal_response
 
 class MySignalsAgent(ADCPHandler):
@@ -64,6 +64,10 @@ class MySignalsAgent(ADCPHandler):
         return signals_response(MY_SIGNALS)
 
     async def activate_signal(self, params, context=None):
+        # adcp_error() auto-classifies recovery (correctable/transient/terminal)
+        segment_id = params.get("signal_agent_segment_id")
+        if segment_id not in SIGNALS:
+            return adcp_error("SIGNAL_NOT_FOUND", f"Signal {segment_id} not found")
         return activate_signal_response(deployments)
 
 serve(MySignalsAgent(), name="my-signals-agent")
@@ -147,13 +151,14 @@ Each signal must include:
 
 **`activate_signal`**
 ```python
+from adcp.server import adcp_error
 from adcp.server.responses import activate_signal_response
 
 async def activate_signal(self, params, context=None):
     segment_id = params.get("signal_agent_segment_id")
     signal = SIGNALS.get(segment_id)
     if not signal:
-        return {"errors": [{"code": "SIGNAL_NOT_FOUND", "message": f"Signal {segment_id} not found"}]}
+        return adcp_error("SIGNAL_NOT_FOUND", f"Signal {segment_id} not found")
 
     deployments = []
     for dest in params.get("destinations", []):
@@ -187,15 +192,23 @@ async def activate_signal(self, params, context=None):
 
 ## SDK Quick Reference
 
+**Response builders** (from `adcp.server.responses`):
+
 | Function | Usage |
 |----------|-------|
-| `serve(handler)` | Start server on `:3001/mcp` |
 | `capabilities_response(protocols)` | `get_adcp_capabilities` response |
 | `signals_response(signals)` | `get_signals` response |
 | `activate_signal_response(deployments)` | `activate_signal` response |
-| `error_response(code, message)` | Structured error |
 
-Import handlers from `adcp.server`. Import response builders from `adcp.server.responses`.
+**DX helpers** (from `adcp.server`):
+
+| Function | Usage |
+|----------|-------|
+| `adcp_error(code, message, field=, suggestion=)` | Structured error with auto-recovery |
+| `inject_context(params, response)` | Context passthrough (ADCP requirement) |
+| `serve(handler)` | Start server on `:3001/mcp` |
+
+Import helpers from `adcp.server`. Import response builders from `adcp.server.responses`.
 
 ## Validation
 
diff --git a/src/adcp/__init__.py b/src/adcp/__init__.py
index 8b26dbde8..5bdaad74a 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -19,9 +19,13 @@
     verify_agent_authorization,
     verify_agent_for_property,
 )
-from adcp.capabilities import FeatureResolver, validate_capabilities
+from adcp.capabilities import (  # noqa: F401
+    FeatureResolver,
+    build_synthetic_capabilities,
+    validate_capabilities,
+)
 from adcp.client import ADCPClient, ADCPMultiAgentClient
-from adcp.exceptions import (
+from adcp.exceptions import (  # noqa: F401
     AdagentsNotFoundError,
     AdagentsTimeoutError,
     AdagentsValidationError,
@@ -30,6 +34,7 @@
     ADCPError,
     ADCPFeatureUnsupportedError,
     ADCPProtocolError,
+    ADCPTaskError,
     ADCPTimeoutError,
     ADCPToolNotFoundError,
     ADCPWebhookError,
@@ -375,6 +380,9 @@
     TaskStatus,
     WebhookMetadata,
 )
+
+# Re-export type guards for response handling
+from adcp.types.guards import is_adcp_error, is_adcp_success  # noqa: F401
 from adcp.types.registry import (
     AgentCapabilities,
     AgentCompliance,
diff --git a/src/adcp/capabilities.py b/src/adcp/capabilities.py
index fd8be23be..0284d3415 100644
--- a/src/adcp/capabilities.py
+++ b/src/adcp/capabilities.py
@@ -21,18 +21,96 @@
 
 # Mapping from AdCP task names to the media_buy.features flag they require.
 # Only includes tasks that exist on ADCPClient and ADCPHandler.
-# Other features (audience_targeting, catalog_management, etc.) will be added
-# here when their corresponding task methods are implemented.
+# Maps AdCP task names to the capability feature they require.
+# Used by validate_capabilities() to check handler/feature consistency.
 TASK_FEATURE_MAP: dict[str, str] = {
+    # Conversion tracking
     "sync_event_sources": "conversion_tracking",
     "log_event": "conversion_tracking",
+    # Audience targeting
+    "sync_audiences": "audience_targeting",
+    # Catalog management
+    "sync_catalogs": "catalog_management",
+    # Content standards
+    "create_content_standards": "content_standards",
+    "update_content_standards": "content_standards",
+    "get_content_standards": "content_standards",
+    "list_content_standards": "content_standards",
+    "calibrate_content": "content_standards",
+    "validate_content_delivery": "content_standards",
+    "get_media_buy_artifacts": "content_standards",
+    "get_creative_features": "content_standards",
+    # Signals
+    "get_signals": "signals",
+    "activate_signal": "signals",
+    # Creative agent
+    "build_creative": "creative_agent",
+    "preview_creative": "creative_agent",
+    "get_creative_delivery": "creative_agent",
+    # Campaign governance
+    "sync_plans": "campaign_governance",
+    "check_governance": "campaign_governance",
+    "report_plan_outcome": "campaign_governance",
+    "get_plan_audit_logs": "campaign_governance",
+    # Property lists
+    "create_property_list": "property_lists",
+    "update_property_list": "property_lists",
+    "get_property_list": "property_lists",
+    "list_property_lists": "property_lists",
+    "delete_property_list": "property_lists",
+    # Collection lists
+    "create_collection_list": "collection_lists",
+    "update_collection_list": "collection_lists",
+    "get_collection_list": "collection_lists",
+    "list_collection_lists": "collection_lists",
+    "delete_collection_list": "collection_lists",
+    # Trusted Match Protocol
+    "context_match": "trusted_match",
+    "identity_match": "trusted_match",
+    # Sponsored Intelligence
+    "si_get_offering": "sponsored_intelligence",
+    "si_initiate_session": "sponsored_intelligence",
+    "si_send_message": "sponsored_intelligence",
+    "si_terminate_session": "sponsored_intelligence",
+    # Brand
+    "get_brand_identity": "brand",
+    "get_rights": "brand",
+    "acquire_rights": "brand",
 }
 
-# Derived: feature -> list of handler methods that implement it.
-# Used by validate_capabilities() to check that sellers implement what they declare.
+# Bidirectional: feature -> list of tasks that require it.
+# Use for feature-gating: "which tasks to hide if feature X is disabled?"
 FEATURE_HANDLER_MAP: dict[str, list[str]] = {}
 for _task, _feature in TASK_FEATURE_MAP.items():
     FEATURE_HANDLER_MAP.setdefault(_feature, []).append(_task)
+del _task, _feature
+
+
+def build_synthetic_capabilities(
+    supported_protocols: list[str],
+    *,
+    major_versions: list[int] | None = None,
+) -> dict[str, Any]:
+    """Build a synthetic capabilities response for pre-v3 sellers.
+
+    Use this when connecting to a seller that doesn't support
+    ``get_adcp_capabilities`` (pre-v3 sellers). The returned dict
+    can be passed to ``FeatureResolver`` after wrapping with the
+    appropriate Pydantic model.
+
+    Args:
+        supported_protocols: List of protocol domains the seller supports
+            (e.g., ``["media_buy"]``).
+        major_versions: ADCP major versions the seller supports.
+            Defaults to ``[2]``.
+
+    Returns:
+        A dict matching the GetAdcpCapabilitiesResponse shape.
+    """
+    return {
+        "adcp": {"major_versions": major_versions or [2]},
+        "supported_protocols": supported_protocols,
+    }
 
 
 class FeatureResolver:
@@ -66,6 +144,19 @@ def __init__(self, capabilities: GetAdcpCapabilitiesResponse) -> None:
     def capabilities(self) -> GetAdcpCapabilitiesResponse:
         return self._caps
 
+    def supports_v3(self) -> bool:
+        """Check if the seller supports ADCP v3.
+
+        Returns:
+            True if major_versions includes 3.
+        """
+        if self._caps.adcp is None:
+            return False
+        for v in self._caps.adcp.major_versions:
+            if (v.root if hasattr(v, "root") else v) == 3:
+                return True
+        return False
+
     def supports(self, feature: str) -> bool:
         """Check if a feature is supported."""
         caps = self._caps
diff --git a/src/adcp/exceptions.py b/src/adcp/exceptions.py
index c8bf3f6ce..b55fe1f9d 100644
--- a/src/adcp/exceptions.py
+++ b/src/adcp/exceptions.py
@@ -1,6 +1,8 @@
+"""Exception hierarchy for AdCP client."""
+
 from __future__ import annotations
 
-"""Exception hierarchy for AdCP client."""
+from typing import Any
 
 
 class ADCPError(Exception):
@@ -25,10 +27,15 @@ def __init__(
         if agent_uri:
             full_message = f"{full_message}\n  URI: {agent_uri}"
         if suggestion:
-            full_message = f"{full_message}\n  💡 {suggestion}"
+            full_message = f"{full_message}\n  Suggestion: {suggestion}"
 
         super().__init__(full_message)
 
+    @property
+    def is_retryable(self) -> bool:
+        """Whether this error is safe to retry."""
+        return False
+
 
 class ADCPConnectionError(ADCPError):
     """Connection to agent failed."""
@@ -41,6 +48,10 @@ def __init__(self, message: str, agent_id: str | None = None, agent_uri: str | N
         )
         super().__init__(message, agent_id, agent_uri, suggestion)
 
+    @property
+    def is_retryable(self) -> bool:
+        return True
+
 
 class ADCPAuthenticationError(ADCPError):
     """Authentication failed (401, 403)."""
@@ -73,6 +84,10 @@ def __init__(
         suggestion += "\n     Try increasing the timeout value or check if the agent is overloaded."
         super().__init__(message, agent_id, agent_uri, suggestion)
 
+    @property
+    def is_retryable(self) -> bool:
+        return True
+
 
 class ADCPProtocolError(ADCPError):
     """Protocol-level error (malformed response, unexpected format)."""
@@ -134,6 +149,7 @@ def __init__(
         operation: str,
         error_message: str | None = None,
         agent_id: str | None = None,
+        errors: list[Any] | None = None,
     ):
         """Initialize simple API error.
 
@@ -141,7 +157,11 @@ def __init__(
             operation: The operation that failed (e.g., "get_products")
             error_message: The underlying error message from TaskResult
             agent_id: Optional agent ID for context
+            errors: Structured ADCP error objects from the response
         """
+        self.operation = operation
+        self.errors = errors or []
+
         message = f"{operation} failed"
         if error_message:
             message = f"{message}: {error_message}"
@@ -225,3 +245,46 @@ def __init__(self, publisher_domain: str, timeout: float):
             "     Try increasing the timeout value or check the domain is correct."
         )
         super().__init__(message, None, None, suggestion)
+
+
+class ADCPTaskError(ADCPError):
+    """A task returned an ADCP error response.
+
+    Provides structured access to the error objects from the response,
+    including error codes for programmatic handling.
+    """
+
+    def __init__(
+        self,
+        operation: str,
+        errors: list[Any],
+        agent_id: str | None = None,
+    ):
+        """Initialize task error.
+
+        Args:
+            operation: The task that failed (e.g., "create_media_buy")
+            errors: List of ADCP Error objects from the response
+            agent_id: Optional agent ID for context
+        """
+        self.operation = operation
+        self.errors = errors
+        self.error_codes = [
+            e.code for e in errors if hasattr(e, "code") and e.code
+        ]
+
+        message = f"{operation} failed"
+        if errors:
+            first_msg = getattr(errors[0], "message", str(errors[0]))
+            message = f"{operation} failed: {first_msg}"
+            if len(errors) > 1:
+                message += f" (+{len(errors) - 1} more)"
+
+        super().__init__(message, agent_id=agent_id)
+
+    @property
+    def is_retryable(self) -> bool:
+        """True if any error code is transient (RATE_LIMITED, etc.)."""
+        from adcp.server.helpers import TRANSIENT_CODES
+
+        return bool(TRANSIENT_CODES & set(self.error_codes))
diff --git a/src/adcp/server/__init__.py b/src/adcp/server/__init__.py
index 9a41318bb..a570d0a6f 100644
--- a/src/adcp/server/__init__.py
+++ b/src/adcp/server/__init__.py
@@ -1,6 +1,9 @@
 """ADCP Server Framework.
 
-The simplest way to build an AdCP agent:
+Build an AdCP agent in minutes. The framework handles the protocol
+plumbing so you focus on business logic.
+
+Quickstart (class-based)::
 
     from adcp.server import ADCPHandler, serve
     from adcp.server.responses import capabilities_response, products_response
@@ -13,6 +16,38 @@ async def get_products(self, params, context=None):
             return products_response(MY_PRODUCTS)
 
     serve(MySeller(), name="my-seller")
+
+Quickstart (decorator-based)::
+
+    from adcp.server import adcp_server, serve
+    from adcp.server.responses import products_response
+
+    server = adcp_server("my-seller")
+
+    @server.get_products
+    async def get_products(params, context=None):
+        return products_response(MY_PRODUCTS)
+
+    serve(server, name="my-seller")  # capabilities auto-generated
+
+What the framework does automatically:
+
+- **Error responses**: ``adcp_error("BUDGET_TOO_LOW")`` auto-populates
+  recovery classification (transient/correctable/terminal) from 20+
+  standard codes.
+- **State transitions**: ``media_buy_response(..., status="active")``
+  auto-populates ``valid_actions`` from the status. No manual mapping.
+- **Account resolution**: ``resolve_account(params, my_resolver)``
+  auto-resolves AccountReference and returns ACCOUNT_NOT_FOUND errors.
+- **Context passthrough**: ``inject_context(params, response)`` echoes
+  the request context field back in the response (ADCP requirement).
+- **Cancellation**: ``cancel_media_buy_response(id, "buyer")``
+  auto-sets canceled_at, status, and valid_actions=[].
+- **Capabilities**: The decorator builder auto-generates
+  ``get_adcp_capabilities`` from which handlers you register.
+- **Validation**: GovernanceHandler and ContentStandardsHandler
+  auto-validate request dicts into Pydantic models before your
+  handler code runs.
 """
 
 from __future__ import annotations
@@ -25,9 +60,24 @@ async def get_products(self, params, context=None):
     not_supported,
 )
 from adcp.server.brand import BrandHandler
+from adcp.server.builder import ADCPServerBuilder, adcp_server
 from adcp.server.compliance import ComplianceHandler
 from adcp.server.content_standards import ContentStandardsHandler
 from adcp.server.governance import GovernanceHandler
+from adcp.server.helpers import (  # noqa: F401
+    CORRECTABLE_CODES,
+    MEDIA_BUY_STATE_MACHINE,
+    STANDARD_ERROR_CODES,
+    TERMINAL_CODES,
+    TRANSIENT_CODES,
+    AccountError,
+    adcp_error,
+    cancel_media_buy_response,
+    inject_context,
+    is_terminal_status,
+    resolve_account,
+    valid_actions_for_status,
+)
 from adcp.server.mcp_tools import MCPToolSet, create_mcp_tools, get_tools_for_handler
 from adcp.server.proposal import ProposalBuilder, ProposalNotSupported
 from adcp.server.responses import (
@@ -88,6 +138,17 @@ async def get_products(self, params, context=None):
     "TestControllerStore",
     "TestControllerError",
     "register_test_controller",
+    # DX helpers
+    "AccountError",
+    "STANDARD_ERROR_CODES",
+    "adcp_error",
+    "adcp_server",
+    "ADCPServerBuilder",
+    "cancel_media_buy_response",
+    "inject_context",
+    "is_terminal_status",
+    "resolve_account",
+    "valid_actions_for_status",
     # Response builders
     "activate_signal_response",
     "build_creative_response",
diff --git a/src/adcp/server/base.py b/src/adcp/server/base.py
index 5aa301835..effeab96e 100644
--- a/src/adcp/server/base.py
+++ b/src/adcp/server/base.py
@@ -1,3 +1,4 @@
+# ruff: noqa: E501
 """Base classes for ADCP server implementations.
 
 Defines the ADCPHandler base class and utilities for building ADCP-compliant agents.
@@ -7,12 +8,71 @@
 
 from abc import ABC
 from dataclasses import dataclass, field
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 from pydantic import BaseModel
 
 from adcp.types import Error
 
+if TYPE_CHECKING:
+    from adcp.types import (
+        AcquireRightsRequest,
+        ActivateSignalRequest,
+        BuildCreativeRequest,
+        CalibrateContentRequest,
+        CheckGovernanceRequest,
+        ComplyTestControllerRequest,
+        ContextMatchRequest,
+        CreateCollectionListRequest,
+        CreateContentStandardsRequest,
+        CreateMediaBuyRequest,
+        CreatePropertyListRequest,
+        DeleteCollectionListRequest,
+        DeletePropertyListRequest,
+        GetAccountFinancialsRequest,
+        GetAdcpCapabilitiesRequest,
+        GetBrandIdentityRequest,
+        GetCollectionListRequest,
+        GetContentStandardsRequest,
+        GetCreativeDeliveryRequest,
+        GetCreativeFeaturesRequest,
+        GetMediaBuyArtifactsRequest,
+        GetMediaBuyDeliveryRequest,
+        GetMediaBuysRequest,
+        GetPlanAuditLogsRequest,
+        GetProductsRequest,
+        GetPropertyListRequest,
+        GetRightsRequest,
+        GetSignalsRequest,
+        IdentityMatchRequest,
+        ListAccountsRequest,
+        ListCollectionListsRequest,
+        ListContentStandardsRequest,
+        ListCreativeFormatsRequest,
+        ListCreativesRequest,
+        ListPropertyListsRequest,
+        LogEventRequest,
+        PreviewCreativeRequest,
+        ProvidePerformanceFeedbackRequest,
+        ReportPlanOutcomeRequest,
+        ReportUsageRequest,
+        SiGetOfferingRequest,
+        SiInitiateSessionRequest,
+        SiSendMessageRequest,
+        SiTerminateSessionRequest,
+        SyncAccountsRequest,
+        SyncAudiencesRequest,
+        SyncCatalogsRequest,
+        SyncCreativesRequest,
+        SyncEventSourcesRequest,
+        SyncPlansRequest,
+        UpdateCollectionListRequest,
+        UpdateContentStandardsRequest,
+        UpdateMediaBuyRequest,
+        UpdatePropertyListRequest,
+        ValidateContentDeliveryRequest,
+    )
+
 
 @dataclass
 class ToolContext:
@@ -81,7 +141,7 @@ def _not_supported(self, operation: str) -> NotImplementedResponse:
     # Core Catalog Operations
     # ========================================================================
 
-    async def get_products(self, params: dict[str, Any], context: ToolContext | None = None) -> Any:
+    async def get_products(self, params: GetProductsRequest | dict[str, Any], context: ToolContext | None = None) -> Any:
         """Get advertising products.
 
         Override this to provide product catalog functionality.
@@ -89,7 +149,7 @@ async def get_products(self, params: dict[str, Any], context: ToolContext | None
         return self._not_supported("get_products")
 
     async def list_creative_formats(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ListCreativeFormatsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """List supported creative formats.
 
@@ -102,7 +162,7 @@ async def list_creative_formats(
     # ========================================================================
 
     async def sync_creatives(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncCreativesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync creatives.
 
@@ -111,7 +171,7 @@ async def sync_creatives(
         return self._not_supported("sync_creatives")
 
     async def list_creatives(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ListCreativesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """List creatives.
 
@@ -120,7 +180,7 @@ async def list_creatives(
         return self._not_supported("list_creatives")
 
     async def build_creative(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: BuildCreativeRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Build a creative.
 
@@ -129,7 +189,7 @@ async def build_creative(
         return self._not_supported("build_creative")
 
     async def preview_creative(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: PreviewCreativeRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Preview a creative rendering.
 
@@ -138,7 +198,7 @@ async def preview_creative(
         return self._not_supported("preview_creative")
 
     async def get_creative_delivery(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetCreativeDeliveryRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get creative delivery metrics.
 
@@ -151,7 +211,7 @@ async def get_creative_delivery(
     # ========================================================================
 
     async def create_media_buy(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: CreateMediaBuyRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Create a media buy.
 
@@ -160,7 +220,7 @@ async def create_media_buy(
         return self._not_supported("create_media_buy")
 
     async def update_media_buy(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: UpdateMediaBuyRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Update a media buy.
 
@@ -169,7 +229,7 @@ async def update_media_buy(
         return self._not_supported("update_media_buy")
 
     async def get_media_buy_delivery(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetMediaBuyDeliveryRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get media buy delivery metrics.
 
@@ -178,7 +238,7 @@ async def get_media_buy_delivery(
         return self._not_supported("get_media_buy_delivery")
 
     async def get_media_buys(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetMediaBuysRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get media buys with status and optional delivery snapshots.
 
@@ -190,7 +250,7 @@ async def get_media_buys(
     # Signal Operations
     # ========================================================================
 
-    async def get_signals(self, params: dict[str, Any], context: ToolContext | None = None) -> Any:
+    async def get_signals(self, params: GetSignalsRequest | dict[str, Any], context: ToolContext | None = None) -> Any:
         """Get available signals.
 
         Override this to provide signal catalog.
@@ -198,7 +258,7 @@ async def get_signals(self, params: dict[str, Any], context: ToolContext | None
         return self._not_supported("get_signals")
 
     async def activate_signal(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ActivateSignalRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Activate a signal.
 
@@ -211,7 +271,7 @@ async def activate_signal(
     # ========================================================================
 
     async def provide_performance_feedback(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ProvidePerformanceFeedbackRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Provide performance feedback.
 
@@ -224,7 +284,7 @@ async def provide_performance_feedback(
     # ========================================================================
 
     async def list_accounts(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ListAccountsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """List accounts.
 
@@ -233,7 +293,7 @@ async def list_accounts(
         return self._not_supported("list_accounts")
 
     async def sync_accounts(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncAccountsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync accounts.
 
@@ -242,7 +302,7 @@ async def sync_accounts(
         return self._not_supported("sync_accounts")
 
     async def get_account_financials(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetAccountFinancialsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get account financials.
 
@@ -251,7 +311,7 @@ async def get_account_financials(
         return self._not_supported("get_account_financials")
 
     async def report_usage(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ReportUsageRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Report account usage.
 
@@ -263,7 +323,7 @@ async def report_usage(
     # Event Operations
     # ========================================================================
 
-    async def log_event(self, params: dict[str, Any], context: ToolContext | None = None) -> Any:
+    async def log_event(self, params: LogEventRequest | dict[str, Any], context: ToolContext | None = None) -> Any:
         """Log event.
 
         Override this to provide functionality.
@@ -271,7 +331,7 @@ async def log_event(self, params: dict[str, Any], context: ToolContext | None =
         return self._not_supported("log_event")
 
     async def sync_event_sources(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncEventSourcesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync event sources.
 
@@ -280,7 +340,7 @@ async def sync_event_sources(
         return self._not_supported("sync_event_sources")
 
     async def sync_audiences(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncAudiencesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync audiences.
 
@@ -298,7 +358,7 @@ async def sync_governance(
         return self._not_supported("sync_governance")
 
     async def sync_catalogs(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncCatalogsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync catalogs.
 
@@ -311,7 +371,7 @@ async def sync_catalogs(
     # ========================================================================
 
     async def get_adcp_capabilities(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetAdcpCapabilitiesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get ADCP capabilities.
 
@@ -324,7 +384,7 @@ async def get_adcp_capabilities(
     # ========================================================================
 
     async def create_content_standards(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: CreateContentStandardsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Create content standards configuration.
 
@@ -333,7 +393,7 @@ async def create_content_standards(
         return self._not_supported("create_content_standards")
 
     async def get_content_standards(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetContentStandardsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get content standards configuration.
 
@@ -342,7 +402,7 @@ async def get_content_standards(
         return self._not_supported("get_content_standards")
 
     async def list_content_standards(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ListContentStandardsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """List content standards configurations.
 
@@ -351,7 +411,7 @@ async def list_content_standards(
         return self._not_supported("list_content_standards")
 
     async def update_content_standards(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: UpdateContentStandardsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Update content standards configuration.
 
@@ -360,7 +420,7 @@ async def update_content_standards(
         return self._not_supported("update_content_standards")
 
     async def calibrate_content(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: CalibrateContentRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Calibrate content against standards.
 
@@ -369,7 +429,7 @@ async def calibrate_content(
         return self._not_supported("calibrate_content")
 
     async def validate_content_delivery(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ValidateContentDeliveryRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Validate content delivery against standards.
 
@@ -378,7 +438,7 @@ async def validate_content_delivery(
         return self._not_supported("validate_content_delivery")
 
     async def get_media_buy_artifacts(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetMediaBuyArtifactsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get artifacts associated with a media buy.
 
@@ -391,7 +451,7 @@ async def get_media_buy_artifacts(
     # ========================================================================
 
     async def si_get_offering(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SiGetOfferingRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get sponsored intelligence offering.
 
@@ -400,7 +460,7 @@ async def si_get_offering(
         return self._not_supported("si_get_offering")
 
     async def si_initiate_session(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SiInitiateSessionRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Initiate sponsored intelligence session.
 
@@ -409,7 +469,7 @@ async def si_initiate_session(
         return self._not_supported("si_initiate_session")
 
     async def si_send_message(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SiSendMessageRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Send message in sponsored intelligence session.
 
@@ -418,7 +478,7 @@ async def si_send_message(
         return self._not_supported("si_send_message")
 
     async def si_terminate_session(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SiTerminateSessionRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Terminate sponsored intelligence session.
 
@@ -431,7 +491,7 @@ async def si_terminate_session(
     # ========================================================================
 
     async def get_creative_features(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetCreativeFeaturesRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Evaluate governance features for a creative.
 
@@ -440,7 +500,7 @@ async def get_creative_features(
         return self._not_supported("get_creative_features")
 
     async def sync_plans(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: SyncPlansRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Sync campaign governance plans.
 
@@ -449,7 +509,7 @@ async def sync_plans(
         return self._not_supported("sync_plans")
 
     async def check_governance(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: CheckGovernanceRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Check an action against campaign governance.
 
@@ -458,7 +518,7 @@ async def check_governance(
         return self._not_supported("check_governance")
 
     async def report_plan_outcome(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ReportPlanOutcomeRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Report the outcome of a governed action.
 
@@ -467,7 +527,7 @@ async def report_plan_outcome(
         return self._not_supported("report_plan_outcome")
 
     async def get_plan_audit_logs(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetPlanAuditLogsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Retrieve governance audit logs for plans.
 
@@ -476,7 +536,7 @@ async def get_plan_audit_logs(
         return self._not_supported("get_plan_audit_logs")
 
     async def create_property_list(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: CreatePropertyListRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Create a property list for governance filtering.
 
@@ -485,7 +545,7 @@ async def create_property_list(
         return self._not_supported("create_property_list")
 
     async def get_property_list(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetPropertyListRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get a property list with optional resolution.
 
@@ -494,7 +554,7 @@ async def get_property_list(
         return self._not_supported("get_property_list")
 
     async def list_property_lists(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ListPropertyListsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """List property lists.
 
@@ -503,7 +563,7 @@ async def list_property_lists(
         return self._not_supported("list_property_lists")
 
     async def update_property_list(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: UpdatePropertyListRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Update a property list.
 
@@ -512,7 +572,7 @@ async def update_property_list(
         return self._not_supported("update_property_list")
 
     async def delete_property_list(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: DeletePropertyListRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Delete a property list.
 
@@ -520,12 +580,61 @@ async def delete_property_list(
         """
         return self._not_supported("delete_property_list")
 
+    # ========================================================================
+    # V3 Governance (Collection Lists) Operations
+    # ========================================================================
+
+    async def create_collection_list(
+        self, params: CreateCollectionListRequest | dict[str, Any], context: ToolContext | None = None
+    ) -> Any:
+        """Create a collection list for governance filtering.
+
+        Override this in GovernanceHandler subclasses.
+        """
+        return self._not_supported("create_collection_list")
+
+    async def get_collection_list(
+        self, params: GetCollectionListRequest | dict[str, Any], context: ToolContext | None = None
+    ) -> Any:
+        """Get a collection list with optional resolution.
+
+        Override this in GovernanceHandler subclasses.
+        """
+        return self._not_supported("get_collection_list")
+
+    async def list_collection_lists(
+        self, params: ListCollectionListsRequest | dict[str, Any], context: ToolContext | None = None
+    ) -> Any:
+        """List collection lists.
+
+        Override this in GovernanceHandler subclasses.
+        """
+        return self._not_supported("list_collection_lists")
+
+    async def update_collection_list(
+        self, params: UpdateCollectionListRequest | dict[str, Any], context: ToolContext | None = None
+    ) -> Any:
+        """Update a collection list.
+
+        Override this in GovernanceHandler subclasses.
+        """
+        return self._not_supported("update_collection_list")
+
+    async def delete_collection_list(
+        self, params: DeleteCollectionListRequest | dict[str, Any], context: ToolContext | None = None
+    ) -> Any:
+        """Delete a collection list.
+
+        Override this in GovernanceHandler subclasses.
+        """
+        return self._not_supported("delete_collection_list")
+
     # ========================================================================
     # V3 TMP Operations
     # ========================================================================
 
     async def context_match(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ContextMatchRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Match ad context to buyer packages.
 
@@ -534,7 +643,7 @@ async def context_match(
         return self._not_supported("context_match")
 
     async def identity_match(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: IdentityMatchRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Match user identity for package eligibility.
 
@@ -547,7 +656,7 @@ async def identity_match(
     # ========================================================================
 
     async def get_brand_identity(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetBrandIdentityRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get brand identity information.
 
@@ -556,7 +665,7 @@ async def get_brand_identity(
         return self._not_supported("get_brand_identity")
 
     async def get_rights(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: GetRightsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Get available rights for licensing.
 
@@ -565,7 +674,7 @@ async def get_rights(
         return self._not_supported("get_rights")
 
     async def acquire_rights(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: AcquireRightsRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Acquire rights for brand content usage.
 
@@ -578,7 +687,7 @@ async def acquire_rights(
     # ========================================================================
 
     async def comply_test_controller(
-        self, params: dict[str, Any], context: ToolContext | None = None
+        self, params: ComplyTestControllerRequest | dict[str, Any], context: ToolContext | None = None
     ) -> Any:
         """Compliance test controller (sandbox only).
 
diff --git a/src/adcp/server/builder.py b/src/adcp/server/builder.py
new file mode 100644
index 000000000..6787e0386
--- /dev/null
+++ b/src/adcp/server/builder.py
@@ -0,0 +1,200 @@
+"""Decorator-based server builder for ADCP.
+
+An alternative to the class-based ADCPHandler for simple agents:
+
+    from adcp.server import adcp_server, serve
+    from adcp.server.responses import capabilities_response, products_response
+
+    server = adcp_server("my-seller", version="1.0.0")
+
+    @server.get_products
+    async def get_products(params, context=None):
+        return products_response(MY_PRODUCTS)
+
+    @server.get_adcp_capabilities
+    async def capabilities(params, context=None):
+        return capabilities_response(["media_buy"])
+
+    if __name__ == "__main__":
+        serve(server, name="my-seller")
+"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from typing import Any
+
+from adcp.server.base import ADCPHandler
+
+# Maps handler method names to their ADCP capability domain.
+# Used by auto-capabilities to detect which domains the agent supports.
+HANDLER_TO_DOMAIN: dict[str, str] = {
+    # Media buy
+    "get_products": "media_buy",
+    "create_media_buy": "media_buy",
+    "update_media_buy": "media_buy",
+    "get_media_buys": "media_buy",
+    "get_media_buy_delivery": "media_buy",
+    "provide_performance_feedback": "media_buy",
+    "list_creative_formats": "media_buy",
+    "sync_creatives": "media_buy",
+    "list_creatives": "media_buy",
+    "sync_event_sources": "media_buy",
+    "log_event": "media_buy",
+    "sync_audiences": "media_buy",
+    "sync_catalogs": "media_buy",
+    # Creative
+    "build_creative": "creative",
+    "preview_creative": "creative",
+    "get_creative_delivery": "creative",
+    "get_creative_features": "creative",
+    # Signals
+    "get_signals": "signals",
+    "activate_signal": "signals",
+    # Account
+    "list_accounts": "media_buy",
+    "sync_accounts": "media_buy",
+    "get_account_financials": "media_buy",
+    "report_usage": "media_buy",
+    "sync_governance": "media_buy",
+    # Governance
+    "create_property_list": "governance",
+    "update_property_list": "governance",
+    "get_property_list": "governance",
+    "list_property_lists": "governance",
+    "delete_property_list": "governance",
+    "create_content_standards": "governance",
+    "update_content_standards": "governance",
+    "get_content_standards": "governance",
+    "list_content_standards": "governance",
+    "calibrate_content": "governance",
+    "validate_content_delivery": "governance",
+    "get_media_buy_artifacts": "governance",
+    "sync_plans": "governance",
+    "check_governance": "governance",
+    "report_plan_outcome": "governance",
+    "get_plan_audit_logs": "governance",
+    # Sponsored Intelligence
+    "si_get_offering": "sponsored_intelligence",
+    "si_initiate_session": "sponsored_intelligence",
+    "si_send_message": "sponsored_intelligence",
+    "si_terminate_session": "sponsored_intelligence",
+    # Brand
+    "get_brand_identity": "brand",
+    "get_rights": "brand",
+    "acquire_rights": "brand",
+    # Collection Lists
+    "create_collection_list": "governance",
+    "get_collection_list": "governance",
+    "list_collection_lists": "governance",
+    "update_collection_list": "governance",
+    "delete_collection_list": "governance",
+    # TMP
+    "context_match": "media_buy",
+    "identity_match": "media_buy",
+    # Compliance
+    "comply_test_controller": "media_buy",
+}
+
+
+class ADCPServerBuilder:
+    """Declarative server builder using decorators.
+
+    Use ``adcp_server()`` to create an instance, then register handlers
+    with decorators. The builder can be passed directly to ``serve()``.
+
+    Example::
+
+        server = adcp_server("my-seller")
+
+        @server.get_products
+        async def get_products(params, context=None):
+            return products_response(MY_PRODUCTS)
+
+        serve(server, name="my-seller")
+    """
+
+    def __init__(self, name: str, *, version: str = "1.0.0") -> None:
+        self.name = name
+        self.version = version
+        self._handlers: dict[str, Callable[..., Any]] = {}
+
+    def __getattr__(self, task_name: str) -> Callable[..., Any]:
+        """Return a decorator that registers a handler for the given task."""
+        if task_name.startswith("_"):
+            raise AttributeError(task_name)
+
+        def decorator(fn: Callable[..., Any]) -> Callable[..., Any]:
+            if (
+                task_name not in HANDLER_TO_DOMAIN
+                and task_name != "get_adcp_capabilities"
+            ):
+                raise ValueError(
+                    f"'{task_name}' is not a known ADCP task. "
+                    f"Check for typos."
+                )
+            self._handlers[task_name] = fn
+            return fn
+
+        return decorator
+
+    def _detect_domains(self) -> list[str]:
+        """Detect which ADCP domains the registered handlers cover."""
+        domains: set[str] = set()
+        for handler_name in self._handlers:
+            domain = HANDLER_TO_DOMAIN.get(handler_name)
+            if domain:
+                domains.add(domain)
+        return sorted(domains)
+
+    def build_handler(self) -> ADCPHandler:
+        """Build an ADCPHandler from registered decorators.
+
+        If ``get_adcp_capabilities`` is not registered, it will be
+        auto-generated from the detected domains.
+        """
+        handlers = dict(self._handlers)
+
+        # Auto-generate capabilities if not provided
+        if "get_adcp_capabilities" not in handlers:
+            domains = self._detect_domains()
+            if domains:
+                from adcp.server.responses import capabilities_response
+
+                async def auto_capabilities(
+                    params: Any, context: Any = None
+                ) -> dict[str, Any]:
+                    return capabilities_response(domains)
+
+                handlers["get_adcp_capabilities"] = auto_capabilities
+
+        # Create a dynamic subclass
+        class DynamicHandler(ADCPHandler):
+            pass
+
+        for task_name, fn in handlers.items():
+            # Wrap standalone functions to accept self
+            async def _bound_method(
+                self: Any,
+                params: Any,
+                context: Any = None,
+                _fn: Callable[..., Any] = fn,
+            ) -> Any:
+                return await _fn(params, context)
+
+            setattr(DynamicHandler, task_name, _bound_method)
+
+        return DynamicHandler()
+
+
+def adcp_server(name: str, **kwargs: Any) -> ADCPServerBuilder:
+    """Create a decorator-based ADCP server builder.
+
+    Args:
+        name: Server name.
+        **kwargs: Additional configuration (e.g., version="1.0.0").
+
+    Returns:
+        An ADCPServerBuilder instance.
+    """
+    return ADCPServerBuilder(name, **kwargs)
diff --git a/src/adcp/server/content_standards.py b/src/adcp/server/content_standards.py
index 9a063600a..c647a313f 100644
--- a/src/adcp/server/content_standards.py
+++ b/src/adcp/server/content_standards.py
@@ -61,7 +61,7 @@ async def handle_create_content_standards(
 
     async def create_content_standards(
         self,
-        params: dict[str, Any],
+        params: CreateContentStandardsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> CreateContentStandardsResponse | NotImplementedResponse:
         """Create content standards configuration.
@@ -80,7 +80,7 @@ async def create_content_standards(
 
     async def get_content_standards(
         self,
-        params: dict[str, Any],
+        params: GetContentStandardsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> GetContentStandardsResponse | NotImplementedResponse:
         """Get content standards configuration.
@@ -99,7 +99,7 @@ async def get_content_standards(
 
     async def list_content_standards(
         self,
-        params: dict[str, Any],
+        params: ListContentStandardsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> ListContentStandardsResponse | NotImplementedResponse:
         """List content standards configurations.
@@ -118,7 +118,7 @@ async def list_content_standards(
 
     async def update_content_standards(
         self,
-        params: dict[str, Any],
+        params: UpdateContentStandardsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> UpdateContentStandardsResponse | NotImplementedResponse:
         """Update content standards configuration.
@@ -137,7 +137,7 @@ async def update_content_standards(
 
     async def calibrate_content(
         self,
-        params: dict[str, Any],
+        params: CalibrateContentRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> CalibrateContentResponse | NotImplementedResponse:
         """Calibrate content against standards.
@@ -156,7 +156,7 @@ async def calibrate_content(
 
     async def validate_content_delivery(
         self,
-        params: dict[str, Any],
+        params: ValidateContentDeliveryRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> ValidateContentDeliveryResponse | NotImplementedResponse:
         """Validate content delivery against standards.
@@ -175,7 +175,7 @@ async def validate_content_delivery(
 
     async def get_media_buy_artifacts(
         self,
-        params: dict[str, Any],
+        params: GetMediaBuyArtifactsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> GetMediaBuyArtifactsResponse | NotImplementedResponse:
         """Get artifacts associated with a media buy.
diff --git a/src/adcp/server/governance.py b/src/adcp/server/governance.py
index 50eac4d6a..1cc540a4b 100644
--- a/src/adcp/server/governance.py
+++ b/src/adcp/server/governance.py
@@ -71,7 +71,7 @@ async def handle_create_property_list(
 
     async def get_creative_features(
         self,
-        params: dict[str, Any],
+        params: GetCreativeFeaturesRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> GetCreativeFeaturesResponse | NotImplementedResponse:
         """Evaluate governance features for a creative manifest."""
@@ -87,7 +87,7 @@ async def get_creative_features(
 
     async def sync_plans(
         self,
-        params: dict[str, Any],
+        params: SyncPlansRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> SyncPlansResponse | NotImplementedResponse:
         """Sync campaign governance plans to the agent."""
@@ -103,7 +103,7 @@ async def sync_plans(
 
     async def check_governance(
         self,
-        params: dict[str, Any],
+        params: CheckGovernanceRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> CheckGovernanceResponse | NotImplementedResponse:
         """Check whether a proposed or committed action complies with plan governance."""
@@ -119,7 +119,7 @@ async def check_governance(
 
     async def report_plan_outcome(
         self,
-        params: dict[str, Any],
+        params: ReportPlanOutcomeRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> ReportPlanOutcomeResponse | NotImplementedResponse:
         """Report the outcome of a previously governed action."""
@@ -135,7 +135,7 @@ async def report_plan_outcome(
 
     async def get_plan_audit_logs(
         self,
-        params: dict[str, Any],
+        params: GetPlanAuditLogsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> GetPlanAuditLogsResponse | NotImplementedResponse:
         """Retrieve governance audit logs for one or more plans."""
@@ -151,7 +151,7 @@ async def get_plan_audit_logs(
 
     async def create_property_list(
         self,
-        params: dict[str, Any],
+        params: CreatePropertyListRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> CreatePropertyListResponse | NotImplementedResponse:
         """Create a property list for governance filtering.
@@ -170,7 +170,7 @@ async def create_property_list(
 
     async def get_property_list(
         self,
-        params: dict[str, Any],
+        params: GetPropertyListRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> GetPropertyListResponse | NotImplementedResponse:
         """Get a property list with optional resolution.
@@ -189,7 +189,7 @@ async def get_property_list(
 
     async def list_property_lists(
         self,
-        params: dict[str, Any],
+        params: ListPropertyListsRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> ListPropertyListsResponse | NotImplementedResponse:
         """List property lists.
@@ -208,7 +208,7 @@ async def list_property_lists(
 
     async def update_property_list(
         self,
-        params: dict[str, Any],
+        params: UpdatePropertyListRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> UpdatePropertyListResponse | NotImplementedResponse:
         """Update a property list.
@@ -227,7 +227,7 @@ async def update_property_list(
 
     async def delete_property_list(
         self,
-        params: dict[str, Any],
+        params: DeletePropertyListRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> DeletePropertyListResponse | NotImplementedResponse:
         """Delete a property list.
diff --git a/src/adcp/server/helpers.py b/src/adcp/server/helpers.py
new file mode 100644
index 000000000..6d9ec0ed6
--- /dev/null
+++ b/src/adcp/server/helpers.py
@@ -0,0 +1,295 @@
+"""DX helpers for ADCP server builders.
+
+Automate error responses, state transitions, account resolution,
+and context passthrough so developers focus on business logic.
+
+    from adcp.server.helpers import adcp_error, valid_actions_for_status
+
+    return adcp_error("BUDGET_TOO_LOW", "Budget $50 is below minimum $500",
+                      field="budget", suggestion="Increase to at least $500")
+
+    actions = valid_actions_for_status("active")
+"""
+
+from __future__ import annotations
+
+from collections.abc import Awaitable, Callable
+from datetime import datetime, timezone
+from typing import Any
+
+# All 32 codes from the ADCP spec (enums/error-code.json) plus SDK extensions.
+# Recovery classification: transient (retry), correctable (fix request), terminal.
+STANDARD_ERROR_CODES: dict[str, dict[str, str]] = {
+    # --- Spec codes: Transient ---
+    "RATE_LIMITED": {"recovery": "transient", "message": "Too many requests"},
+    "SERVICE_UNAVAILABLE": {"recovery": "transient", "message": "Service temporarily unavailable"},
+    # --- Spec codes: Correctable ---
+    "INVALID_REQUEST": {"recovery": "correctable", "message": "Invalid request parameters"},
+    "VALIDATION_ERROR": {"recovery": "correctable", "message": "Request validation failed"},
+    "POLICY_VIOLATION": {"recovery": "correctable", "message": "Policy violation"},
+    "PRODUCT_NOT_FOUND": {"recovery": "correctable", "message": "Product not found"},
+    "PRODUCT_UNAVAILABLE": {"recovery": "correctable", "message": "Product unavailable"},
+    "PRODUCT_EXPIRED": {"recovery": "correctable", "message": "Product expired"},
+    "PROPOSAL_EXPIRED": {"recovery": "correctable", "message": "Proposal expired"},
+    "PROPOSAL_NOT_COMMITTED": {"recovery": "correctable", "message": "Proposal not committed"},
+    "BUDGET_TOO_LOW": {"recovery": "correctable", "message": "Budget below minimum"},
+    "BUDGET_EXHAUSTED": {"recovery": "correctable", "message": "Budget fully spent"},
+    "BUDGET_EXCEEDED": {"recovery": "correctable", "message": "Would exceed budget allocation"},
+    "CREATIVE_REJECTED": {"recovery": "correctable", "message": "Creative rejected"},
+    "CREATIVE_DEADLINE_EXCEEDED": {"recovery": "correctable", "message": "Creative deadline passed"},  # noqa: E501
+    "AUDIENCE_TOO_SMALL": {"recovery": "correctable", "message": "Audience too small"},
+    "MEDIA_BUY_NOT_FOUND": {"recovery": "correctable", "message": "Media buy not found"},
+    "PACKAGE_NOT_FOUND": {"recovery": "correctable", "message": "Package not found"},
+    "CONFLICT": {"recovery": "correctable", "message": "Revision conflict - refetch and retry"},
+    "INVALID_STATE": {"recovery": "correctable", "message": "Invalid state for this operation"},
+    "NOT_CANCELLABLE": {"recovery": "correctable", "message": "Cannot cancel this media buy"},
+    "COMPLIANCE_UNSATISFIED": {"recovery": "correctable", "message": "Compliance not met"},
+    "ACCOUNT_AMBIGUOUS": {"recovery": "correctable", "message": "Account reference is ambiguous"},
+    "ACCOUNT_SETUP_REQUIRED": {"recovery": "correctable", "message": "Account setup required"},
+    "ACCOUNT_PAYMENT_REQUIRED": {"recovery": "correctable", "message": "Payment required"},
+    "IO_REQUIRED": {"recovery": "correctable", "message": "Insertion order required"},
+    "SESSION_NOT_FOUND": {"recovery": "correctable", "message": "Session not found"},
+    "SESSION_TERMINATED": {"recovery": "correctable", "message": "Session already terminated"},
+    # --- Spec codes: Terminal ---
+    "AUTH_REQUIRED": {"recovery": "terminal", "message": "Authentication required"},
+    "ACCOUNT_NOT_FOUND": {"recovery": "terminal", "message": "Account not found"},
+    "ACCOUNT_SUSPENDED": {"recovery": "terminal", "message": "Account suspended"},
+    "UNSUPPORTED_FEATURE": {"recovery": "terminal", "message": "Feature not supported"},
+    # --- SDK extensions (not in spec enum) ---
+    "NOT_SUPPORTED": {"recovery": "terminal", "message": "Operation not supported"},
+}
+
+# Typed recovery classification sets for servers building their own error hierarchies.
+TRANSIENT_CODES: frozenset[str] = frozenset(
+    code for code, info in STANDARD_ERROR_CODES.items() if info["recovery"] == "transient"
+)
+CORRECTABLE_CODES: frozenset[str] = frozenset(
+    code for code, info in STANDARD_ERROR_CODES.items() if info["recovery"] == "correctable"
+)
+TERMINAL_CODES: frozenset[str] = frozenset(
+    code for code, info in STANDARD_ERROR_CODES.items() if info["recovery"] == "terminal"
+)
+
+
+def adcp_error(
+    code: str,
+    message: str | None = None,
+    *,
+    field: str | None = None,
+    suggestion: str | None = None,
+    recovery: str | None = None,
+    retry_after: int | None = None,
+    details: dict[str, str | int | float | bool | None] | None = None,
+) -> dict[str, Any]:
+    """Build a structured ADCP error response with auto-recovery.
+
+    Standard codes get recovery auto-populated from the code table.
+    Custom codes default to "terminal".
+
+    Args:
+        code: Error code (e.g., "BUDGET_TOO_LOW").
+        message: Human-readable message. Defaults to standard message.
+        field: Which request field caused the error.
+        suggestion: Actionable fix suggestion.
+        recovery: Override ("transient", "correctable", "terminal").
+        retry_after: Seconds to wait (for RATE_LIMITED).
+        details: Server-generated debugging data (constraint names, limits,
+            thresholds). Use only server-generated values here. NEVER pass
+            request params or user-supplied strings -- they flow to the
+            caller's LLM context and could enable prompt injection.
+    """
+    std = STANDARD_ERROR_CODES.get(code, {})
+    err: dict[str, Any] = {
+        "code": code,
+        "message": message or std.get("message", code),
+        "recovery": recovery or std.get("recovery", "terminal"),
+    }
+    if field is not None:
+        err["field"] = field
+    if suggestion is not None:
+        err["suggestion"] = suggestion
+    if retry_after is not None:
+        err["retry_after"] = retry_after
+    if details is not None:
+        err["details"] = details
+    return {"errors": [err]}
+
+
+# ============================================================================
+# Media Buy State Machine
+# ============================================================================
+
+# Status values from the ADCP spec (enums/media-buy-status.json).
+# Actions are operations available via update_media_buy for each status.
+# Public constant — servers can inspect, test against, or extend this.
+MEDIA_BUY_STATE_MACHINE: dict[str, list[str]] = {
+    "pending_activation": [
+        "cancel", "update_budget", "update_dates",
+        "update_packages", "add_packages",
+    ],
+    "active": [
+        "pause", "cancel", "update_budget", "update_dates",
+        "update_packages", "add_packages",
+    ],
+    "paused": ["resume", "cancel", "update_budget", "update_dates"],
+    "completed": [],
+    "rejected": [],
+    "canceled": [],
+}
+
+
+def valid_actions_for_status(status: str) -> list[str]:
+    """Get valid buyer actions for a media buy status."""
+    return list(MEDIA_BUY_STATE_MACHINE.get(status, []))
+
+
+def is_terminal_status(status: str) -> bool:
+    """Check if a media buy status is terminal (no further actions)."""
+    return status in ("completed", "rejected", "canceled")
+
+
+# ============================================================================
+# Account Resolution
+# ============================================================================
+
+AccountResolver = Callable[[dict[str, Any]], Awaitable[Any | None]]
+
+
+class AccountError(Exception):
+    """Raised by account resolvers to indicate a specific account error.
+
+    Use this in your resolver to return structured errors for cases
+    beyond simple "not found"::
+
+        async def my_resolver(ref):
+            account = db.find(ref)
+            if not account:
+                return None  # auto-returns ACCOUNT_NOT_FOUND
+            if account.status == "suspended":
+                raise AccountError("ACCOUNT_SUSPENDED", "Account is suspended")
+            if account.status == "payment_required":
+                raise AccountError("ACCOUNT_PAYMENT_REQUIRED",
+                    suggestion="Update payment method at https://...")
+            return account
+    """
+
+    def __init__(
+        self,
+        code: str,
+        message: str | None = None,
+        *,
+        suggestion: str | None = None,
+    ):
+        self.code = code
+        self.error_message = message
+        self.suggestion = suggestion
+        super().__init__(message or code)
+
+
+async def resolve_account(
+    params: dict[str, Any],
+    resolver: AccountResolver | None,
+) -> tuple[Any | None, dict[str, Any] | None]:
+    """Resolve an account reference from request params.
+
+    Returns (account, None) on success, (None, error_dict) on failure,
+    or (None, None) if no account field or no resolver configured.
+
+    The resolver can return None (auto-ACCOUNT_NOT_FOUND) or raise
+    ``AccountError`` for specific error codes (ACCOUNT_SUSPENDED,
+    ACCOUNT_PAYMENT_REQUIRED, ACCOUNT_AMBIGUOUS, etc.).
+    """
+    if resolver is None or "account" not in params:
+        return None, None
+    try:
+        account = await resolver(params["account"])
+    except AccountError as e:
+        return None, adcp_error(
+            e.code,
+            e.error_message,
+            field="account",
+            suggestion=e.suggestion,
+        )
+    if account is None:
+        return None, adcp_error(
+            "ACCOUNT_NOT_FOUND",
+            "The specified account does not exist",
+            field="account",
+            suggestion="Use list_accounts to discover available accounts, "
+            "or sync_accounts to create one",
+        )
+    return account, None
+
+
+# ============================================================================
+# Context Passthrough
+# ============================================================================
+
+
+_MAX_CONTEXT_SIZE = 64 * 1024  # 64KB limit on context passthrough
+
+
+def inject_context(
+    params: dict[str, Any],
+    response: dict[str, Any],
+    *,
+    max_size: int = _MAX_CONTEXT_SIZE,
+) -> dict[str, Any]:
+    """Auto-inject context passthrough from request into response.
+
+    ADCP requires that if a request contains a ``context`` field,
+    the response must echo it back unchanged. A size limit prevents
+    resource amplification from oversized context payloads.
+
+    The context field is opaque and may contain attacker-controlled
+    data -- do not interpret or display its contents.
+    """
+    if "context" in params and "context" not in response:
+        import json
+
+        ctx = params["context"]
+        if len(json.dumps(ctx, default=str)) <= max_size:
+            response["context"] = ctx
+    return response
+
+
+# ============================================================================
+# Cancellation Helper
+# ============================================================================
+
+
+def cancel_media_buy_response(
+    media_buy_id: str,
+    canceled_by: str,
+    *,
+    reason: str | None = None,
+    canceled_at: str | None = None,
+    affected_packages: list[Any] | None = None,
+    revision: int | None = None,
+    sandbox: bool = True,
+) -> dict[str, Any]:
+    """Build a cancellation response with auto-defaults.
+
+    Auto-sets canceled_at to now, status to "canceled", valid_actions to [].
+    Requires canceled_by ("buyer" or "seller") - the field developers
+    most commonly forget.
+    """
+    if canceled_by not in ("buyer", "seller"):
+        raise ValueError(
+            f"canceled_by must be 'buyer' or 'seller', got {canceled_by!r}"
+        )
+    resp: dict[str, Any] = {
+        "media_buy_id": media_buy_id,
+        "status": "canceled",
+        "canceled_by": canceled_by,
+        "canceled_at": canceled_at or datetime.now(timezone.utc).isoformat(),
+        "valid_actions": [],
+        "sandbox": sandbox,
+    }
+    if reason is not None:
+        resp["reason"] = reason
+    if affected_packages is not None:
+        resp["affected_packages"] = affected_packages
+    if revision is not None:
+        resp["revision"] = revision
+    return resp
diff --git a/src/adcp/server/mcp_tools.py b/src/adcp/server/mcp_tools.py
index 1b54c4c8a..d8cb6718f 100644
--- a/src/adcp/server/mcp_tools.py
+++ b/src/adcp/server/mcp_tools.py
@@ -1,3 +1,4 @@
+# ruff: noqa: E501
 """MCP server integration helpers.
 
 Provides utilities for registering ADCP handlers with MCP servers.
@@ -14,12 +15,28 @@
 
 logger = logging.getLogger(__name__)
 
+# MCP ToolAnnotations — behavioral hints for agent planning.
+# RO = read-only (safe to call speculatively)
+# MUT = mutating (creates or changes state)
+# DEST = destructive (deletes state, not easily reversible)
+# IDEMP = idempotent (safe to retry / call multiple times)
+_RO: dict[str, bool] = {"readOnlyHint": True, "idempotentHint": True}
+_MUT: dict[str, bool] = {"readOnlyHint": False, "destructiveHint": False}
+_DEST: dict[str, bool] = {"readOnlyHint": False, "destructiveHint": True}
+_IDEMP: dict[str, bool] = {"readOnlyHint": False, "idempotentHint": True}
+
 # Tool definitions for all ADCP operations
 ADCP_TOOL_DEFINITIONS: list[dict[str, Any]] = [
     # Core Catalog Operations
     {
         "name": "get_products",
-        "description": "Get advertising products from the catalog",
+        "description": (
+            "Search available advertising products matching campaign requirements. "
+            "Returns products with pricing, formats, and delivery options. "
+            "Use buying_mode='brief' for natural language or 'refine' for proposal negotiation. "
+            "Products include product_ids needed for create_media_buy."
+        ),
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -32,7 +49,8 @@
     },
     {
         "name": "list_creative_formats",
-        "description": "List supported creative formats",
+        "description": "List available creative formats with asset requirements. Returns format_ids needed for sync_creatives.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -45,7 +63,8 @@
     # Creative Operations
     {
         "name": "sync_creatives",
-        "description": "Sync creatives to the agent",
+        "description": "Upload or update creative assets for a media buy. Idempotent: re-sending the same creative_id updates it. Returns approval status per creative.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -56,7 +75,8 @@
     },
     {
         "name": "list_creatives",
-        "description": "List synced creatives",
+        "description": "List synced creatives with optional filtering by status, format, or media buy.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -68,7 +88,8 @@
     },
     {
         "name": "build_creative",
-        "description": "Build a creative from assets",
+        "description": "Generate a creative from a brief and brand assets. Returns a creative manifest with rendered assets.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -80,7 +101,8 @@
     },
     {
         "name": "preview_creative",
-        "description": "Preview a creative rendering",
+        "description": "Preview a creative rendering before going live. Returns preview URLs or HTML for visual verification.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -92,7 +114,8 @@
     },
     {
         "name": "get_creative_delivery",
-        "description": "Get creative delivery metrics",
+        "description": "Get creative delivery tags (VAST, HTML, etc.) for serving. Use after creatives are approved.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -104,7 +127,8 @@
     # Media Buy Operations
     {
         "name": "create_media_buy",
-        "description": "Create a media buy from products",
+        "description": "Create a new media buy with packages. Each package references a product_id from get_products and a pricing_option_id. Returns media_buy_id for tracking.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -115,7 +139,8 @@
     },
     {
         "name": "update_media_buy",
-        "description": "Update an existing media buy",
+        "description": "Update an existing media buy: pause, resume, cancel, or modify packages and budget. Requires revision for optimistic concurrency.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -127,7 +152,8 @@
     },
     {
         "name": "get_media_buy_delivery",
-        "description": "Get delivery metrics for a media buy",
+        "description": "Get delivery metrics (impressions, clicks, spend) for active media buys. Returns totals and per-package breakdowns.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -139,7 +165,8 @@
     },
     {
         "name": "get_media_buys",
-        "description": "List media buys with status and optional delivery snapshots",
+        "description": "List media buys with status, packages, and optional delivery snapshots. Filter by media_buy_ids.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -153,7 +180,8 @@
     # Signal Operations
     {
         "name": "get_signals",
-        "description": "Get available signals",
+        "description": "Discover available audience signals for targeting. Use signal_spec for natural language search or signal_ids for exact lookup.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -164,7 +192,8 @@
     },
     {
         "name": "activate_signal",
-        "description": "Activate a signal for use",
+        "description": "Activate an audience signal to a destination (DSP platform or sales agent). Returns deployment status and activation keys.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -177,7 +206,8 @@
     # Account Operations
     {
         "name": "list_accounts",
-        "description": "List accounts",
+        "description": "List advertiser accounts on this seller. Returns account_ids needed for other operations.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -188,7 +218,8 @@
     },
     {
         "name": "sync_accounts",
-        "description": "Sync accounts",
+        "description": "Create or update advertiser accounts. Idempotent: re-sending the same brand/operator pair updates the existing account.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -199,7 +230,8 @@
     },
     {
         "name": "get_account_financials",
-        "description": "Get account financials",
+        "description": "Get financial details for an account including balance, credit, and payment status.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -210,7 +242,8 @@
     },
     {
         "name": "report_usage",
-        "description": "Report usage for billing or metering",
+        "description": "Report usage metrics for billing reconciliation.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -223,7 +256,8 @@
     # Event Operations
     {
         "name": "log_event",
-        "description": "Log event",
+        "description": "Log conversion events (purchases, leads, etc.) for attribution and optimization.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -234,7 +268,8 @@
     },
     {
         "name": "sync_event_sources",
-        "description": "Sync event sources",
+        "description": "Register conversion tracking pixels or event endpoints. Idempotent.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -245,7 +280,8 @@
     },
     {
         "name": "sync_audiences",
-        "description": "Sync audiences",
+        "description": "Upload audience segments for targeting. Idempotent: re-sending updates existing segments.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -257,7 +293,8 @@
     },
     {
         "name": "sync_catalogs",
-        "description": "Sync catalogs",
+        "description": "Upload product catalogs for dynamic ads. Supports multiple catalog types (product, store, hotel, etc.).",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -270,7 +307,8 @@
     # Governance Sync
     {
         "name": "sync_governance",
-        "description": "Register governance agents for accounts",
+        "description": "Register governance agents for accounts. Idempotent.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -282,7 +320,8 @@
     # Feedback Operations
     {
         "name": "provide_performance_feedback",
-        "description": "Provide performance feedback",
+        "description": "Send conversion or performance data back to the seller for optimization. Reference by media_buy_id or buyer_ref.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -295,7 +334,8 @@
     # V3 Protocol Discovery
     {
         "name": "get_adcp_capabilities",
-        "description": "Get ADCP capabilities supported by this agent",
+        "description": "Get this agent's supported protocols, features, and configuration. Call first to understand what this seller can do.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {},
@@ -304,7 +344,8 @@
     # V3 Content Standards
     {
         "name": "create_content_standards",
-        "description": "Create content standards configuration",
+        "description": "Create content standards configuration for brand safety and compliance.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -316,7 +357,8 @@
     },
     {
         "name": "get_content_standards",
-        "description": "Get content standards configuration",
+        "description": "Get content standards configuration.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -327,7 +369,8 @@
     },
     {
         "name": "list_content_standards",
-        "description": "List content standards configurations",
+        "description": "List content standards configurations.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -337,7 +380,8 @@
     },
     {
         "name": "update_content_standards",
-        "description": "Update content standards configuration",
+        "description": "Update content standards configuration.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -349,7 +393,8 @@
     },
     {
         "name": "calibrate_content",
-        "description": "Calibrate content against standards",
+        "description": "Evaluate content against standards. Returns compliance assessment.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -361,7 +406,8 @@
     },
     {
         "name": "validate_content_delivery",
-        "description": "Validate content delivery against standards",
+        "description": "Validate that delivery meets content standards.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -373,7 +419,8 @@
     },
     {
         "name": "get_media_buy_artifacts",
-        "description": "Get artifacts associated with a media buy",
+        "description": "Get compliance artifacts associated with a media buy.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -385,7 +432,8 @@
     # V3 Governance
     {
         "name": "get_creative_features",
-        "description": "Evaluate governance features for a creative",
+        "description": "Get creative feature definitions for governance evaluation.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -398,7 +446,8 @@
     },
     {
         "name": "sync_plans",
-        "description": "Sync campaign governance plans",
+        "description": "Sync campaign governance plans. Idempotent.",
+        "annotations": _IDEMP,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -409,7 +458,8 @@
     },
     {
         "name": "check_governance",
-        "description": "Check an action against campaign governance",
+        "description": "Check an action against campaign governance rules. Returns approved, denied, or conditions.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -426,7 +476,8 @@
     },
     {
         "name": "report_plan_outcome",
-        "description": "Report the outcome of a governed action",
+        "description": "Report the outcome of a governed action for audit.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -442,7 +493,8 @@
     },
     {
         "name": "get_plan_audit_logs",
-        "description": "Retrieve governance audit logs for one or more plans",
+        "description": "Get audit logs for governance decisions.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -455,7 +507,8 @@
     # V3 Sponsored Intelligence
     {
         "name": "si_get_offering",
-        "description": "Get sponsored intelligence offering",
+        "description": "Get sponsored intelligence offering details and capabilities.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {},
@@ -463,7 +516,8 @@
     },
     {
         "name": "si_initiate_session",
-        "description": "Initiate sponsored intelligence session",
+        "description": "Start a sponsored intelligence conversational session.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -474,7 +528,8 @@
     },
     {
         "name": "si_send_message",
-        "description": "Send message in sponsored intelligence session",
+        "description": "Send a message in an active SI session.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -486,7 +541,8 @@
     },
     {
         "name": "si_terminate_session",
-        "description": "Terminate sponsored intelligence session",
+        "description": "End an SI session. Cannot be undone.",
+        "annotations": _DEST,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -498,7 +554,8 @@
     # V3 Governance (Property Lists)
     {
         "name": "create_property_list",
-        "description": "Create a property list for governance filtering",
+        "description": "Create a property list for inclusion/exclusion targeting.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -513,7 +570,8 @@
     },
     {
         "name": "get_property_list",
-        "description": "Get a property list with optional resolution",
+        "description": "Get a property list with optional resolution of dynamic filters.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -526,7 +584,8 @@
     },
     {
         "name": "list_property_lists",
-        "description": "List property lists",
+        "description": "List property lists with optional filtering by principal or status.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -537,7 +596,8 @@
     },
     {
         "name": "update_property_list",
-        "description": "Update a property list",
+        "description": "Update a property list name, description, or filters.",
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -552,7 +612,77 @@
     },
     {
         "name": "delete_property_list",
-        "description": "Delete a property list",
+        "description": "Permanently delete a property list.",
+        "annotations": _DEST,
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "list_id": {"type": "string"},
+            },
+            "required": ["list_id"],
+        },
+    },
+    # V3 Governance (Collection Lists)
+    {
+        "name": "create_collection_list",
+        "description": "Create a collection list for governance filtering.",
+        "annotations": _MUT,
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "name": {"type": "string"},
+                "description": {"type": "string"},
+                "base_collections": {"type": "array"},
+                "filters": {"type": "object"},
+            },
+            "required": ["name"],
+        },
+    },
+    {
+        "name": "get_collection_list",
+        "description": "Get a collection list with optional resolution.",
+        "annotations": _RO,
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "list_id": {"type": "string"},
+                "resolve": {"type": "boolean"},
+                "pagination": {"type": "object"},
+            },
+            "required": ["list_id"],
+        },
+    },
+    {
+        "name": "list_collection_lists",
+        "description": "List collection lists with optional filtering by principal or status.",
+        "annotations": _RO,
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "principal": {"type": "string"},
+                "pagination": {"type": "object"},
+            },
+        },
+    },
+    {
+        "name": "update_collection_list",
+        "description": "Update a collection list name, description, or filters.",
+        "annotations": _MUT,
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "list_id": {"type": "string"},
+                "name": {"type": "string"},
+                "description": {"type": "string"},
+                "filters": {"type": "object"},
+            },
+            "required": ["list_id"],
+        },
+    },
+    {
+        "name": "delete_collection_list",
+        "description": "Permanently delete a collection list.",
+        "annotations": _DEST,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -568,6 +698,7 @@
             "Evaluate publisher placement context against buyer packages"
             " and return matching offers. Called at ad-request time."
         ),
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -590,6 +721,7 @@
             "Evaluate user identity token against active packages"
             " for eligibility. Requires consent in regulated regions."
         ),
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -606,7 +738,8 @@
     # V3 Brand Rights
     {
         "name": "get_brand_identity",
-        "description": "Get brand identity information",
+        "description": "Get brand identity information (logos, colors, guidelines).",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -619,7 +752,8 @@
     },
     {
         "name": "get_rights",
-        "description": "Get available rights for licensing",
+        "description": "Discover available brand rights for licensing.",
+        "annotations": _RO,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -640,6 +774,7 @@
             "Acquire rights for brand content usage."
             " Binding contractual action with financial obligations."
         ),
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -666,6 +801,7 @@
             "Compliance test controller. Sandbox only,"
             " not for production use."
         ),
+        "annotations": _MUT,
         "inputSchema": {
             "type": "object",
             "properties": {
@@ -706,6 +842,11 @@
         "list_property_lists",
         "update_property_list",
         "delete_property_list",
+        "create_collection_list",
+        "get_collection_list",
+        "list_collection_lists",
+        "update_collection_list",
+        "delete_collection_list",
     },
     "ContentStandardsHandler": {
         "create_content_standards",
@@ -770,13 +911,16 @@ def _generate_pydantic_schemas() -> dict[str, dict[str, Any]]:
             CheckGovernanceRequest,
             ComplyTestControllerRequest,
             ContextMatchRequest,
+            CreateCollectionListRequest,
             CreateContentStandardsRequest,
             CreateMediaBuyRequest,
             CreatePropertyListRequest,
+            DeleteCollectionListRequest,
             DeletePropertyListRequest,
             GetAccountFinancialsRequest,
             GetAdcpCapabilitiesRequest,
             GetBrandIdentityRequest,
+            GetCollectionListRequest,
             GetContentStandardsRequest,
             GetCreativeDeliveryRequest,
             GetCreativeFeaturesRequest,
@@ -790,6 +934,7 @@ def _generate_pydantic_schemas() -> dict[str, dict[str, Any]]:
             GetSignalsRequest,
             IdentityMatchRequest,
             ListAccountsRequest,
+            ListCollectionListsRequest,
             ListContentStandardsRequest,
             ListCreativeFormatsRequest,
             ListCreativesRequest,
@@ -809,6 +954,7 @@ def _generate_pydantic_schemas() -> dict[str, dict[str, Any]]:
             SyncCreativesRequest,
             SyncEventSourcesRequest,
             SyncPlansRequest,
+            UpdateCollectionListRequest,
             UpdateContentStandardsRequest,
             UpdateMediaBuyRequest,
             UpdatePropertyListRequest,
@@ -872,6 +1018,12 @@ def _generate_pydantic_schemas() -> dict[str, dict[str, Any]]:
         "list_property_lists": ListPropertyListsRequest,
         "update_property_list": UpdatePropertyListRequest,
         "delete_property_list": DeletePropertyListRequest,
+        # Collection Lists
+        "create_collection_list": CreateCollectionListRequest,
+        "get_collection_list": GetCollectionListRequest,
+        "list_collection_lists": ListCollectionListsRequest,
+        "update_collection_list": UpdateCollectionListRequest,
+        "delete_collection_list": DeleteCollectionListRequest,
         # Sponsored Intelligence
         "si_get_offering": SiGetOfferingRequest,
         "si_initiate_session": SiInitiateSessionRequest,
diff --git a/src/adcp/server/responses.py b/src/adcp/server/responses.py
index 80db49a5c..ee5871937 100644
--- a/src/adcp/server/responses.py
+++ b/src/adcp/server/responses.py
@@ -25,6 +25,8 @@ async def get_products():
 from datetime import datetime, timezone
 from typing import Any
 
+from adcp.server.helpers import valid_actions_for_status
+
 
 def _serialize(items: list[Any]) -> list[Any]:
     """Serialize a list of dicts or Pydantic models to plain dicts."""
@@ -133,22 +135,36 @@ def media_buy_response(
     *,
     buyer_ref: str | None = None,
     status: str | None = None,
+    valid_actions: list[str] | None = None,
+    revision: int | None = None,
+    confirmed_at: str | None = None,
     sandbox: bool = True,
 ) -> dict[str, Any]:
     """Build a create_media_buy success response.
 
     Each package should include: package_id, product_id, pricing_option_id, budget.
     Matches CreateMediaBuyResponse1 (success) schema.
+
+    Auto-populates valid_actions from status if not provided.
+    Auto-sets revision to 1 and confirmed_at to now if not provided.
     """
     resp: dict[str, Any] = {
         "media_buy_id": media_buy_id,
         "packages": _serialize(packages),
+        "revision": revision if revision is not None else 1,
+        "confirmed_at": confirmed_at or datetime.now(timezone.utc).isoformat(),
         "sandbox": sandbox,
     }
     if buyer_ref is not None:
         resp["buyer_ref"] = buyer_ref
     if status is not None:
         resp["status"] = status
+        if valid_actions is None:
+            resp["valid_actions"] = valid_actions_for_status(status)
+        else:
+            resp["valid_actions"] = valid_actions
+    elif valid_actions is not None:
+        resp["valid_actions"] = valid_actions
     return resp
 
 
@@ -166,12 +182,14 @@ def update_media_buy_response(
     *,
     affected_packages: list[Any] | None = None,
     status: str | None = None,
+    valid_actions: list[str] | None = None,
     revision: int | None = None,
     sandbox: bool = True,
 ) -> dict[str, Any]:
     """Build an update_media_buy success response.
 
     Matches UpdateMediaBuyResponse1 (success) schema.
+    Auto-populates valid_actions from status if not provided.
     """
     resp: dict[str, Any] = {
         "media_buy_id": media_buy_id,
@@ -181,6 +199,12 @@ def update_media_buy_response(
         resp["affected_packages"] = _serialize(affected_packages)
     if status is not None:
         resp["status"] = status
+        if valid_actions is None:
+            resp["valid_actions"] = valid_actions_for_status(status)
+        else:
+            resp["valid_actions"] = valid_actions
+    elif valid_actions is not None:
+        resp["valid_actions"] = valid_actions
     if revision is not None:
         resp["revision"] = revision
     return resp
@@ -417,10 +441,13 @@ def sync_catalogs_response(
 
 
 def error_response(code: str, message: str) -> dict[str, Any]:
-    """Build a standard AdCP error dict.
-
-    Args:
-        code: Error code (e.g., "INVALID_PRODUCT", "NOT_FOUND").
-        message: Human-readable error message.
+    """Build a single AdCP error object (not a full error response).
+
+    .. deprecated::
+        Use ``adcp_error()`` from ``adcp.server.helpers`` instead.
+        It returns a properly wrapped ``{"errors": [...]}`` response with
+        auto-recovery classification. This function returns an unwrapped
+        single error dict ``{"code": ..., "message": ...}`` which is not
+        a valid ADCP error response on its own.
     """
     return {"code": code, "message": message}
diff --git a/src/adcp/server/serve.py b/src/adcp/server/serve.py
index 09f7e8728..9d1cc9bb0 100644
--- a/src/adcp/server/serve.py
+++ b/src/adcp/server/serve.py
@@ -26,7 +26,7 @@ async def get_adcp_capabilities(self, params, context=None):
 
 
 def serve(
-    handler: ADCPHandler,
+    handler: ADCPHandler | Any,
     *,
     name: str = "adcp-agent",
     port: int | None = None,
@@ -35,7 +35,10 @@ def serve(
     instructions: str | None = None,
     test_controller: TestControllerStore | None = None,
 ) -> None:
-    """Start an MCP server from an ADCP handler.
+    """Start an MCP server from an ADCP handler or server builder.
+
+    Accepts either an ``ADCPHandler`` instance or an ``ADCPServerBuilder``
+    (from ``adcp_server()``). Builders are auto-converted via ``build_handler()``.
 
     This is the simplest way to run an ADCP agent. It creates a FastMCP server,
     registers all tools from the handler, optionally registers a test controller,
@@ -50,6 +53,12 @@ def serve(
         instructions: Optional system instructions for the agent.
         test_controller: Optional TestControllerStore instance for storyboard testing.
 
+    Security:
+        This function does NOT configure authentication. In production,
+        use a reverse proxy or middleware that validates credentials
+        before forwarding to the MCP endpoint. Without authentication,
+        the tools/list endpoint exposes the agent's capability surface.
+
     Example:
         from adcp.server import ADCPHandler, serve
         from adcp.server.responses import capabilities_response
@@ -69,6 +78,14 @@ async def force_account_status(self, account_id, status):
 
         serve(MyAgent(), name="my-agent", test_controller=MyStore())
     """
+    # Accept ADCPServerBuilder from adcp_server() decorator pattern
+    from adcp.server.builder import ADCPServerBuilder
+
+    if isinstance(handler, ADCPServerBuilder):
+        if not name or name == "adcp-agent":
+            name = handler.name
+        handler = handler.build_handler()
+
     mcp = create_mcp_server(handler, name=name, port=port, instructions=instructions)
 
     if test_controller is not None:
@@ -176,5 +193,6 @@ def model_dump_one_level(self) -> dict[str, Any]:
         wrap_output=False,
     )
 
-    # Register directly in the tool manager's dict
+    # FastMCP does not expose a public API for registering pre-built Tool
+    # objects with custom schemas. This accesses internals; requires mcp>=1.23.
     mcp._tool_manager._tools[name] = tool
diff --git a/src/adcp/server/sponsored_intelligence.py b/src/adcp/server/sponsored_intelligence.py
index 1d1b2c3d3..611a53d19 100644
--- a/src/adcp/server/sponsored_intelligence.py
+++ b/src/adcp/server/sponsored_intelligence.py
@@ -55,7 +55,7 @@ async def handle_si_get_offering(
 
     async def si_get_offering(
         self,
-        params: dict[str, Any],
+        params: SiGetOfferingRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> SiGetOfferingResponse | NotImplementedResponse:
         """Get sponsored intelligence offering.
@@ -74,7 +74,7 @@ async def si_get_offering(
 
     async def si_initiate_session(
         self,
-        params: dict[str, Any],
+        params: SiInitiateSessionRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> SiInitiateSessionResponse | NotImplementedResponse:
         """Initiate sponsored intelligence session.
@@ -93,7 +93,7 @@ async def si_initiate_session(
 
     async def si_send_message(
         self,
-        params: dict[str, Any],
+        params: SiSendMessageRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> SiSendMessageResponse | NotImplementedResponse:
         """Send message in sponsored intelligence session.
@@ -112,7 +112,7 @@ async def si_send_message(
 
     async def si_terminate_session(
         self,
-        params: dict[str, Any],
+        params: SiTerminateSessionRequest | dict[str, Any],
         context: ToolContext | None = None,
     ) -> SiTerminateSessionResponse | NotImplementedResponse:
         """Terminate sponsored intelligence session.
diff --git a/src/adcp/types/__init__.py b/src/adcp/types/__init__.py
index c41254161..165e65ce0 100644
--- a/src/adcp/types/__init__.py
+++ b/src/adcp/types/__init__.py
@@ -85,6 +85,9 @@
     CheckGovernanceRequest,
     CheckGovernanceResponse,
     CoBrandingRequirement,
+    CollectionList,
+    CollectionListChangedWebhook,
+    CollectionListFilters,
     Colors,
     ComplyTestControllerRequest,
     ComplyTestControllerResponse,
@@ -101,6 +104,8 @@
     CpmPricingOption,
     CppPricingOption,
     CpvPricingOption,
+    CreateCollectionListRequest,
+    CreateCollectionListResponse,
     CreateContentStandardsRequest,
     CreateContentStandardsResponse,
     CreateMediaBuyRequest,
@@ -128,6 +133,8 @@
     DatetimeRange,
     DayOfWeek,
     DaypartTarget,
+    DeleteCollectionListRequest,
+    DeleteCollectionListResponse,
     DeletePropertyListRequest,
     DeletePropertyListResponse,
     DeliveryForecast,
@@ -172,6 +179,8 @@
     GetAdcpCapabilitiesResponse,
     GetBrandIdentityRequest,
     GetBrandIdentityResponse,
+    GetCollectionListRequest,
+    GetCollectionListResponse,
     GetContentStandardsRequest,
     GetContentStandardsResponse,
     GetCreativeDeliveryRequest,
@@ -207,6 +216,8 @@
     LandingPageRequirement,
     ListAccountsRequest,
     ListAccountsResponse,
+    ListCollectionListsRequest,
+    ListCollectionListsResponse,
     ListContentStandardsRequest,
     ListContentStandardsResponse,
     ListCreativeFormatsRequest,
@@ -241,6 +252,7 @@
     PackageUpdate,
     Pagination,
     PaginationRequest,
+    PaginationResponse,
     Parameters,
     PerformanceFeedback,
     Placement,
@@ -336,6 +348,8 @@
     TmpError,
     Totals,
     Transform,
+    UpdateCollectionListRequest,
+    UpdateCollectionListResponse,
     UpdateContentStandardsRequest,
     UpdateContentStandardsResponse,
     UpdateFrequency,
@@ -518,6 +532,35 @@
     Status,
 )
 
+# Re-export type guards for discriminated union response handling
+from adcp.types.guards import (  # noqa: F401
+    is_activate_signal_error,
+    is_activate_signal_success,
+    is_adcp_error,
+    is_adcp_success,
+    is_build_creative_error,
+    is_build_creative_success,
+    is_calibrate_content_success,
+    is_create_media_buy_error,
+    is_create_media_buy_success,
+    is_get_account_financials_error,
+    is_get_account_financials_success,
+    is_get_creative_features_success,
+    is_log_event_error,
+    is_log_event_success,
+    is_performance_feedback_error,
+    is_performance_feedback_success,
+    is_sync_accounts_error,
+    is_sync_accounts_success,
+    is_sync_catalogs_error,
+    is_sync_catalogs_success,
+    is_sync_creatives_error,
+    is_sync_creatives_success,
+    is_update_media_buy_error,
+    is_update_media_buy_success,
+    is_validate_content_delivery_success,
+)
+
 # Semantic aliases for auto-generated field enum names
 ListCreativesField = Field1
 
@@ -743,6 +786,20 @@ def __init__(self, *args: object, **kwargs: object) -> None:
     "SiTerminateSessionRequest",
     "SiTerminateSessionResponse",
     "SiUiElement",
+    # V3 Governance (Collection Lists)
+    "CollectionList",
+    "CollectionListChangedWebhook",
+    "CollectionListFilters",
+    "CreateCollectionListRequest",
+    "CreateCollectionListResponse",
+    "DeleteCollectionListRequest",
+    "DeleteCollectionListResponse",
+    "GetCollectionListRequest",
+    "GetCollectionListResponse",
+    "ListCollectionListsRequest",
+    "ListCollectionListsResponse",
+    "UpdateCollectionListRequest",
+    "UpdateCollectionListResponse",
     # V3 Governance (Property Lists)
     "CreatePropertyListRequest",
     "CreatePropertyListResponse",
@@ -900,6 +957,7 @@ def __init__(self, *args: object, **kwargs: object) -> None:
     "Pacing",
     "Pagination",
     "PaginationRequest",
+    "PaginationResponse",
     "PricingModel",
     "PrimaryCountry",
     "PropertyIdentifierTypes",
diff --git a/src/adcp/types/_generated.py b/src/adcp/types/_generated.py
index 1acf3bc15..aa5f5b83e 100644
--- a/src/adcp/types/_generated.py
+++ b/src/adcp/types/_generated.py
@@ -10,7 +10,7 @@
 DO NOT EDIT MANUALLY.
 
 Generated from: https://github.com/adcontextprotocol/adcp/tree/main/schemas
-Generation date: 2026-04-04 03:44:57 UTC
+Generation date: 2026-04-16 13:06:46 UTC
 """
 
 # ruff: noqa: E501, I001
@@ -74,6 +74,7 @@
 from adcp.types.generated_poc.enums.forecastable_metric import ForecastableMetric
 from adcp.types.generated_poc.enums.format_id_parameter import FormatIdParameter
 from adcp.types.generated_poc.enums.frequency_cap_scope import FrequencyCapScope
+from adcp.types.generated_poc.enums.genre_taxonomy import GenreTaxonomy
 from adcp.types.generated_poc.enums.geo_level import GeographicTargetingLevel
 from adcp.types.generated_poc.enums.governance_domain import GovernanceDomain
 from adcp.types.generated_poc.enums.governance_mode import GovernanceMode
@@ -84,6 +85,7 @@
 from adcp.types.generated_poc.enums.installment_status import InstallmentStatus
 from adcp.types.generated_poc.enums.javascript_module_type import JavascriptModuleType
 from adcp.types.generated_poc.enums.landing_page_requirement import LandingPageRequirement
+from adcp.types.generated_poc.enums.makegood_remedy import MakegoodRemedy
 from adcp.types.generated_poc.enums.markdown_flavor import MarkdownFlavor
 from adcp.types.generated_poc.enums.match_id_type import MatchIdType
 from adcp.types.generated_poc.enums.media_buy_status import MediaBuyStatus
@@ -92,6 +94,7 @@
 from adcp.types.generated_poc.enums.notification_type import NotificationType
 from adcp.types.generated_poc.enums.outcome_type import OutcomeType
 from adcp.types.generated_poc.enums.pacing import Pacing
+from adcp.types.generated_poc.enums.performance_standard_metric import PerformanceStandardMetric
 from adcp.types.generated_poc.enums.policy_category import PolicyCategory
 from adcp.types.generated_poc.enums.policy_enforcement import PolicyEnforcementLevel
 from adcp.types.generated_poc.enums.postal_system import PostalCodeSystem
@@ -125,6 +128,7 @@
 from adcp.types.generated_poc.enums.validation_mode import ValidationMode
 from adcp.types.generated_poc.enums.vast_tracking_event import VastTrackingEvent
 from adcp.types.generated_poc.enums.vast_version import VastVersion
+from adcp.types.generated_poc.enums.viewability_standard import ViewabilityStandard
 from adcp.types.generated_poc.enums.wcag_level import WcagLevel
 from adcp.types.generated_poc.enums.webhook_response_type import WebhookResponseType
 from adcp.types.generated_poc.enums.webhook_security_method import WebhookSecurityMethod
@@ -244,6 +248,57 @@
 )
 from adcp.types.generated_poc.brand.rights_pricing_option import Period, RightsPricingOption
 from adcp.types.generated_poc.brand.rights_terms import RightsTerms
+from adcp.types.generated_poc.collection.base_collection_source import (
+    BaseCollectionSource,
+    BaseCollectionSource1,
+    BaseCollectionSource2,
+    BaseCollectionSource3,
+    Identifier,
+)
+from adcp.types.generated_poc.collection.collection_list import CollectionList
+from adcp.types.generated_poc.collection.collection_list_changed_webhook import (
+    ChangeSummary,
+    CollectionListChangedWebhook,
+)
+from adcp.types.generated_poc.collection.collection_list_filters import (
+    CollectionListFilters,
+    ExcludeDistributionId,
+    Kind,
+)
+from adcp.types.generated_poc.collection.create_collection_list_request import (
+    CreateCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.create_collection_list_response import (
+    CreateCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.delete_collection_list_request import (
+    DeleteCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.delete_collection_list_response import (
+    DeleteCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.get_collection_list_request import (
+    GetCollectionListRequest,
+    Pagination,
+)
+from adcp.types.generated_poc.collection.get_collection_list_response import (
+    Collection,
+    CoverageGap,
+    DistributionId,
+    GetCollectionListResponse,
+)
+from adcp.types.generated_poc.collection.list_collection_lists_request import (
+    ListCollectionListsRequest,
+)
+from adcp.types.generated_poc.collection.list_collection_lists_response import (
+    ListCollectionListsResponse,
+)
+from adcp.types.generated_poc.collection.update_collection_list_request import (
+    UpdateCollectionListRequest,
+)
+from adcp.types.generated_poc.collection.update_collection_list_response import (
+    UpdateCollectionListResponse,
+)
 from adcp.types.generated_poc.compliance.comply_test_controller_request import (
     ComplyTestControllerRequest,
     ComplyTestControllerRequest1,
@@ -291,7 +346,6 @@
 )
 from adcp.types.generated_poc.content_standards.artifact_webhook_payload import (
     ArtifactWebhookPayload,
-    Pagination,
 )
 from adcp.types.generated_poc.content_standards.calibrate_content_request import (
     CalibrateContentRequest,
@@ -417,18 +471,16 @@
 from adcp.types.generated_poc.core.brand_id import BrandId
 from adcp.types.generated_poc.core.brand_ref import BrandReference
 from adcp.types.generated_poc.core.business_entity import Address, Bank, BusinessEntity
-from adcp.types.generated_poc.core.catalog import Catalog, Gtin
-from adcp.types.generated_poc.core.catalog_field_mapping import CatalogFieldMapping, Transform
-from adcp.types.generated_poc.core.catchment import (
-    Catchment,
-    Geometry,
-    Radius,
-    TravelTime,
+from adcp.types.generated_poc.core.cancellation_policy import (
+    CancellationFee,
+    CancellationPolicy,
     Type,
-    Unit,
 )
-from adcp.types.generated_poc.core.collection import Collection, Kind, RelatedCollection
-from adcp.types.generated_poc.core.collection_distribution import CollectionDistribution, Identifier
+from adcp.types.generated_poc.core.catalog import Catalog, Gtin
+from adcp.types.generated_poc.core.catalog_field_mapping import CatalogFieldMapping, Transform
+from adcp.types.generated_poc.core.catchment import Catchment, Geometry, Radius, TravelTime, Unit
+from adcp.types.generated_poc.core.collection import RelatedCollection
+from adcp.types.generated_poc.core.collection_distribution import CollectionDistribution
 from adcp.types.generated_poc.core.collection_selector import CollectionSelector
 from adcp.types.generated_poc.core.content_rating import ContentRating
 from adcp.types.generated_poc.core.context import ContextObject
@@ -540,6 +592,11 @@
 from adcp.types.generated_poc.core.material_deadline import MaterialDeadline
 from adcp.types.generated_poc.core.mcp_webhook_payload import McpWebhookPayload
 from adcp.types.generated_poc.core.measurement_readiness import MeasurementReadiness
+from adcp.types.generated_poc.core.measurement_terms import (
+    BillingMeasurement,
+    MakegoodPolicy,
+    MeasurementTerms,
+)
 from adcp.types.generated_poc.core.media_buy import Cancellation, MediaBuy
 from adcp.types.generated_poc.core.media_buy_features import MediaBuyFeatures
 from adcp.types.generated_poc.core.offering import GeoTargets, Metro, Offering, PostalArea, Region
@@ -566,6 +623,7 @@
     MeasurementPeriod,
     PerformanceFeedback,
 )
+from adcp.types.generated_poc.core.performance_standard import PerformanceStandard
 from adcp.types.generated_poc.core.placement import Placement
 from adcp.types.generated_poc.core.placement_definition import PlacementDefinition
 from adcp.types.generated_poc.core.planned_delivery import Geo, PlannedDelivery
@@ -1114,7 +1172,6 @@
 )
 from adcp.types.generated_poc.property.property_list import PropertyList
 from adcp.types.generated_poc.property.property_list_changed_webhook import (
-    ChangeSummary,
     PropertyListChangedWebhook,
 )
 from adcp.types.generated_poc.property.property_list_filters import (
@@ -1402,6 +1459,10 @@
     "Background3",
     "Balance",
     "Bank",
+    "BaseCollectionSource",
+    "BaseCollectionSource1",
+    "BaseCollectionSource2",
+    "BaseCollectionSource3",
     "BaseGroupAsset",
     "BaseIndividualAsset",
     "BasePropertySource",
@@ -1411,6 +1472,7 @@
     "Baseline",
     "BatchFrequency",
     "Billing",
+    "BillingMeasurement",
     "BitDepth",
     "Bleed",
     "Bleed1",
@@ -1457,6 +1519,8 @@
     "CanceledBy",
     "Cancellation",
     "Cancellation1",
+    "CancellationFee",
+    "CancellationPolicy",
     "Catalog",
     "CatalogAction",
     "CatalogAsset",
@@ -1484,6 +1548,9 @@
     "CollectionCadence",
     "CollectionDistribution",
     "CollectionInfo",
+    "CollectionList",
+    "CollectionListChangedWebhook",
+    "CollectionListFilters",
     "CollectionRelationship",
     "CollectionSelector",
     "CollectionStatus",
@@ -1527,12 +1594,15 @@
     "CountriesAllItem",
     "Country",
     "Coverage",
+    "CoverageGap",
     "CpaPricingOption",
     "CpcPricingOption",
     "CpcvPricingOption",
     "CpmPricingOption",
     "CppPricingOption",
     "CpvPricingOption",
+    "CreateCollectionListRequest",
+    "CreateCollectionListResponse",
     "CreateContentStandardsRequest",
     "CreateContentStandardsResponse",
     "CreateContentStandardsResponse1",
@@ -1597,6 +1667,8 @@
     "Delegation",
     "DelegationAuthority",
     "DelegationType",
+    "DeleteCollectionListRequest",
+    "DeleteCollectionListResponse",
     "DeletePropertyListRequest",
     "DeletePropertyListResponse",
     "Delivery",
@@ -1630,6 +1702,7 @@
     "DisclosurePersistence",
     "DisclosurePosition",
     "DistanceUnit",
+    "DistributionId",
     "DistributionIdentifierType",
     "DoohMetrics",
     "DriftMetrics",
@@ -1648,6 +1721,7 @@
     "EventSource",
     "EventSourceHealth",
     "EventType",
+    "ExcludeDistributionId",
     "ExcludedCountry",
     "ExcludedItem",
     "Exclusivity",
@@ -1689,6 +1763,7 @@
     "FuelType",
     "GenerationContext",
     "GenerationCredential",
+    "GenreTaxonomy",
     "Geo",
     "GeoCountriesExcludeItem",
     "GeoCountry",
@@ -1723,6 +1798,8 @@
     "GetBrandIdentityResponse",
     "GetBrandIdentityResponse1",
     "GetBrandIdentityResponse2",
+    "GetCollectionListRequest",
+    "GetCollectionListResponse",
     "GetContentStandardsRequest",
     "GetContentStandardsResponse",
     "GetContentStandardsResponse1",
@@ -1812,6 +1889,8 @@
     "LimitedSeries",
     "ListAccountsRequest",
     "ListAccountsResponse",
+    "ListCollectionListsRequest",
+    "ListCollectionListsResponse",
     "ListContentStandardsRequest",
     "ListContentStandardsResponse",
     "ListContentStandardsResponse1",
@@ -1833,6 +1912,8 @@
     "LogEventResponse2",
     "Logo",
     "MajorVersion",
+    "MakegoodPolicy",
+    "MakegoodRemedy",
     "ManagedBy",
     "MarkdownAsset",
     "MarkdownAssetRequirements",
@@ -1849,6 +1930,7 @@
     "McpWebhookPayload",
     "MeasurementPeriod",
     "MeasurementReadiness",
+    "MeasurementTerms",
     "MediaBuy",
     "MediaBuyDelivery",
     "MediaBuyFeatures",
@@ -1910,6 +1992,8 @@
     "PaymentStatus",
     "PaymentTerms",
     "PerformanceFeedback",
+    "PerformanceStandard",
+    "PerformanceStandardMetric",
     "Period",
     "Placement",
     "PlacementDefinition",
@@ -2217,6 +2301,8 @@
     "UidType",
     "Unit",
     "UniversalMacro",
+    "UpdateCollectionListRequest",
+    "UpdateCollectionListResponse",
     "UpdateContentStandardsRequest",
     "UpdateContentStandardsResponse",
     "UpdateContentStandardsResponse1",
@@ -2263,6 +2349,7 @@
     "ViewThreshold",
     "ViewThreshold1",
     "Viewability",
+    "ViewabilityStandard",
     "Visual",
     "Voice",
     "VoiceSynthesis",
diff --git a/src/adcp/types/generated_poc/a2ui/component.py b/src/adcp/types/generated_poc/a2ui/component.py
index 4ae93c645..38a2e3c18 100644
--- a/src/adcp/types/generated_poc/a2ui/component.py
+++ b/src/adcp/types/generated_poc/a2ui/component.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  a2ui/component.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -14,11 +14,11 @@ class A2UiComponent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    component: Annotated[
-        dict[str, dict[str, Any]],
-        Field(description='Component definition (keyed by component type)'),
-    ]
     id: Annotated[str, Field(description='Unique identifier for this component within the surface')]
     parentId: Annotated[
         str | None, Field(description='ID of the parent component (null for root)')
     ] = None
+    component: Annotated[
+        dict[str, dict[str, Any]],
+        Field(description='Component definition (keyed by component type)'),
+    ]
diff --git a/src/adcp/types/generated_poc/adagents.py b/src/adcp/types/generated_poc/adagents.py
index aefdd3303..b97813636 100644
--- a/src/adcp/types/generated_poc/adagents.py
+++ b/src/adcp/types/generated_poc/adagents.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  adagents.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -153,8 +153,7 @@ class SignalTags(AdCPBaseModel):
     name: Annotated[str, Field(description='Human-readable name for this tag')]
 
 
-class Tags(SignalTags):
-    pass
+Tags = SignalTags
 
 
 class AuthorizedAgents(AdCPBaseModel):
diff --git a/src/adcp/types/generated_poc/collection/__init__.py b/src/adcp/types/generated_poc/collection/__init__.py
new file mode 100644
index 000000000..862adb7d8
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/__init__.py
@@ -0,0 +1,3 @@
+# generated by datamodel-codegen:
+#   filename:  .schema_temp
+#   timestamp: 2026-04-16T02:55:59+00:00
diff --git a/src/adcp/types/generated_poc/collection/base_collection_source.py b/src/adcp/types/generated_poc/collection/base_collection_source.py
new file mode 100644
index 000000000..c2582e895
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/base_collection_source.py
@@ -0,0 +1,116 @@
+# generated by datamodel-codegen:
+#   filename:  collection/base_collection_source.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Any, Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field, RootModel
+
+from ..enums import distribution_identifier_type
+from ..enums import genre_taxonomy as genre_taxonomy_1
+
+
+class BaseCollectionSource2(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_collections'],
+        Field(
+            description='Discriminator indicating selection by specific collection IDs within a publisher'
+        ),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    collection_ids: Annotated[
+        list[str],
+        Field(
+            description="Specific collection IDs from the publisher's adagents.json", min_length=1
+        ),
+    ]
+
+
+class Identifier(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        distribution_identifier_type.DistributionIdentifierType,
+        Field(description='Type of distribution identifier'),
+    ]
+    value: Annotated[str, Field(description='The identifier value')]
+
+
+class BaseCollectionSource1(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['distribution_ids'],
+        Field(
+            description='Discriminator indicating selection by platform-independent distribution identifiers'
+        ),
+    ]
+    identifiers: Annotated[
+        list[Identifier],
+        Field(
+            description='Platform-independent identifiers (imdb_id, gracenote_id, eidr_id, etc.). Each identifier uniquely identifies a collection across all publishers.',
+            min_length=1,
+        ),
+    ]
+
+
+class BaseCollectionSource3(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    selection_type: Annotated[
+        Literal['publisher_genres'],
+        Field(description='Discriminator indicating selection by genre within a publisher'),
+    ]
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain where publisher's adagents.json is hosted",
+            pattern='^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$',
+        ),
+    ]
+    genres: Annotated[
+        list[str],
+        Field(
+            description="Genre values to match against the publisher's collections", min_length=1
+        ),
+    ]
+    genre_taxonomy: Annotated[
+        genre_taxonomy_1.GenreTaxonomy,
+        Field(
+            description="Taxonomy for the genre values. Required so sellers can interpret genre strings unambiguously. Use 'custom' for free-form values negotiated out of band."
+        ),
+    ]
+
+
+class BaseCollectionSource(
+    RootModel[BaseCollectionSource1 | BaseCollectionSource2 | BaseCollectionSource3]
+):
+    root: Annotated[
+        BaseCollectionSource1 | BaseCollectionSource2 | BaseCollectionSource3,
+        Field(
+            description='A source of collections for a collection list. Supports three selection patterns: distribution identifiers (cross-publisher), publisher-specific collection IDs, or publisher-specific genres.',
+            discriminator='selection_type',
+            title='Base Collection Source',
+        ),
+    ]
+
+    def __getattr__(self, name: str) -> Any:
+        """Proxy attribute access to the wrapped type."""
+        if name.startswith('_'):
+            raise AttributeError(name)
+        return getattr(self.root, name)
diff --git a/src/adcp/types/generated_poc/collection/collection_list.py b/src/adcp/types/generated_poc/collection/collection_list.py
new file mode 100644
index 000000000..9d7e75620
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/collection_list.py
@@ -0,0 +1,66 @@
+# generated by datamodel-codegen:
+#   filename:  collection/collection_list.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
+
+from ..core import brand_ref
+from . import base_collection_source, collection_list_filters
+
+
+class CollectionList(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list_id: Annotated[str, Field(description='Unique identifier for this collection list')]
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    principal: Annotated[
+        str | None, Field(description='Principal identity that owns this list')
+    ] = None
+    base_collections: Annotated[
+        list[base_collection_source.BaseCollectionSource] | None,
+        Field(
+            description="Array of collection sources to evaluate. Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres). If omitted, queries the agent's entire collection database."
+        ),
+    ] = None
+    filters: Annotated[
+        collection_list_filters.CollectionListFilters | None,
+        Field(description='Dynamic filters applied when resolving the list'),
+    ] = None
+    brand: Annotated[
+        brand_ref.BrandReference | None,
+        Field(
+            description='Brand reference used to automatically apply appropriate rules. Resolved to full brand identity at execution time.'
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(description='URL to receive notifications when the resolved list changes'),
+    ] = None
+    cache_duration_hours: Annotated[
+        int | None,
+        Field(
+            description='Recommended cache duration for resolved list. Consumers should re-fetch after this period. Defaults to 168 (one week) because collection metadata changes less frequently than property metadata.',
+            ge=1,
+        ),
+    ] = 168
+    created_at: Annotated[AwareDatetime | None, Field(description='When the list was created')] = (
+        None
+    )
+    updated_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was last modified')
+    ] = None
+    collection_count: Annotated[
+        int | None,
+        Field(
+            description='Number of collections in the resolved list (at time of last resolution)'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py b/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py
new file mode 100644
index 000000000..fb2295067
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/collection_list_changed_webhook.py
@@ -0,0 +1,51 @@
+# generated by datamodel-codegen:
+#   filename:  collection/collection_list_changed_webhook.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated, Literal
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import ext as ext_1
+
+
+class ChangeSummary(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    collections_added: Annotated[
+        int | None, Field(description='Number of collections added since last resolution')
+    ] = None
+    collections_removed: Annotated[
+        int | None, Field(description='Number of collections removed since last resolution')
+    ] = None
+    total_collections: Annotated[
+        int | None, Field(description='Total collections in the resolved list')
+    ] = None
+
+
+class CollectionListChangedWebhook(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    event: Annotated[Literal['collection_list_changed'], Field(description='The event type')]
+    list_id: Annotated[str, Field(description='ID of the collection list that changed')]
+    list_name: Annotated[str | None, Field(description='Name of the collection list')] = None
+    change_summary: Annotated[
+        ChangeSummary | None, Field(description='Summary of changes to the resolved list')
+    ] = None
+    resolved_at: Annotated[AwareDatetime, Field(description='When the list was re-resolved')]
+    cache_valid_until: Annotated[
+        AwareDatetime | None,
+        Field(description='When the consumer should refresh from the governance agent'),
+    ] = None
+    signature: Annotated[
+        str,
+        Field(
+            description="Cryptographic signature of the webhook payload, signed with the agent's private key. Recipients MUST verify this signature."
+        ),
+    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/collection_list_filters.py b/src/adcp/types/generated_poc/collection/collection_list_filters.py
new file mode 100644
index 000000000..1bcf49ef6
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/collection_list_filters.py
@@ -0,0 +1,88 @@
+# generated by datamodel-codegen:
+#   filename:  collection/collection_list_filters.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import content_rating
+from ..enums import distribution_identifier_type
+from ..enums import genre_taxonomy as genre_taxonomy_1
+from ..enums import production_quality as production_quality_1
+
+
+class Kind(Enum):
+    series = 'series'
+    publication = 'publication'
+    event_series = 'event_series'
+    rotation = 'rotation'
+
+
+class ExcludeDistributionId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        distribution_identifier_type.DistributionIdentifierType,
+        Field(description='Type of distribution identifier'),
+    ]
+    value: Annotated[str, Field(description='The identifier value')]
+
+
+class CollectionListFilters(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    content_ratings_exclude: Annotated[
+        list[content_rating.ContentRating] | None,
+        Field(
+            description="Exclude collections with any of these content ratings (OR logic). This is a metadata filter on the collection's declared content_rating field — it does not evaluate episode content.",
+            min_length=1,
+        ),
+    ] = None
+    content_ratings_include: Annotated[
+        list[content_rating.ContentRating] | None,
+        Field(
+            description='Include only collections with any of these content ratings (OR logic). Collections without a declared content_rating are excluded.',
+            min_length=1,
+        ),
+    ] = None
+    genres_exclude: Annotated[
+        list[str] | None,
+        Field(
+            description='Exclude collections tagged with any of these genres (OR logic). Values are interpreted against genre_taxonomy when present.',
+            min_length=1,
+        ),
+    ] = None
+    genres_include: Annotated[
+        list[str] | None,
+        Field(
+            description='Include only collections with any of these genres (OR logic). Collections without genre metadata are excluded. Values are interpreted against genre_taxonomy when present.',
+            min_length=1,
+        ),
+    ] = None
+    genre_taxonomy: Annotated[
+        genre_taxonomy_1.GenreTaxonomy | None,
+        Field(
+            description='Taxonomy for genre filter values. When present, genres_include and genres_exclude values are interpreted as taxonomy IDs.'
+        ),
+    ] = None
+    kinds: Annotated[
+        list[Kind] | None, Field(description='Filter to these collection kinds', min_length=1)
+    ] = None
+    exclude_distribution_ids: Annotated[
+        list[ExcludeDistributionId] | None,
+        Field(
+            description='Always exclude collections with these distribution identifiers',
+            min_length=1,
+        ),
+    ] = None
+    production_quality: Annotated[
+        list[production_quality_1.ProductionQuality] | None,
+        Field(description='Filter by production quality tier', min_length=1),
+    ] = None
diff --git a/src/adcp/types/generated_poc/collection/create_collection_list_request.py b/src/adcp/types/generated_poc/collection/create_collection_list_request.py
new file mode 100644
index 000000000..1f037cf68
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/create_collection_list_request.py
@@ -0,0 +1,60 @@
+# generated by datamodel-codegen:
+#   filename:  collection/create_collection_list_request.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import brand_ref
+from ..core import context as context_1
+from ..core import ext as ext_1
+from . import base_collection_source, collection_list_filters
+
+
+class CreateCollectionListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable name for the list')]
+    description: Annotated[str | None, Field(description="Description of the list's purpose")] = (
+        None
+    )
+    base_collections: Annotated[
+        list[base_collection_source.BaseCollectionSource] | None,
+        Field(
+            description="Array of collection sources to evaluate. Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres). If omitted, queries the agent's entire collection database.",
+            min_length=1,
+        ),
+    ] = None
+    filters: Annotated[
+        collection_list_filters.CollectionListFilters | None,
+        Field(description='Dynamic filters to apply when resolving the list'),
+    ] = None
+    brand: Annotated[
+        brand_ref.BrandReference | None,
+        Field(
+            description='Brand reference. When provided, the agent automatically applies appropriate rules based on brand characteristics (industry, target_audience, etc.). Resolved at execution time.'
+        ),
+    ] = None
+    idempotency_key: Annotated[
+        str | None,
+        Field(
+            description='Client-generated unique key for this request. Prevents duplicate collection list creation on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/create_collection_list_response.py b/src/adcp/types/generated_poc/collection/create_collection_list_response.py
new file mode 100644
index 000000000..0cdc8fb34
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/create_collection_list_response.py
@@ -0,0 +1,29 @@
+# generated by datamodel-codegen:
+#   filename:  collection/create_collection_list_response.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import ext as ext_1
+from . import collection_list
+
+
+class CreateCollectionListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[
+        collection_list.CollectionList, Field(description='The created collection list')
+    ]
+    auth_token: Annotated[
+        str,
+        Field(
+            description='Token that can be shared with sellers to authorize fetching this list. Store this - it is only returned at creation time.'
+        ),
+    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/delete_collection_list_request.py b/src/adcp/types/generated_poc/collection/delete_collection_list_request.py
new file mode 100644
index 000000000..093cb3a2f
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/delete_collection_list_request.py
@@ -0,0 +1,38 @@
+# generated by datamodel-codegen:
+#   filename:  collection/delete_collection_list_request.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+
+
+class DeleteCollectionListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the collection list to delete')]
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+    idempotency_key: Annotated[
+        str | None,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/collection/delete_collection_list_response.py b/src/adcp/types/generated_poc/collection/delete_collection_list_response.py
new file mode 100644
index 000000000..fe1a1128c
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/delete_collection_list_response.py
@@ -0,0 +1,21 @@
+# generated by datamodel-codegen:
+#   filename:  collection/delete_collection_list_response.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import ext as ext_1
+
+
+class DeleteCollectionListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    deleted: Annotated[bool, Field(description='Whether the list was successfully deleted')]
+    list_id: Annotated[str, Field(description='ID of the deleted list')]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/get_collection_list_request.py b/src/adcp/types/generated_poc/collection/get_collection_list_request.py
new file mode 100644
index 000000000..5ad693d89
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/get_collection_list_request.py
@@ -0,0 +1,56 @@
+# generated by datamodel-codegen:
+#   filename:  collection/get_collection_list_request.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+
+
+class Pagination(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    max_results: Annotated[
+        int | None,
+        Field(description='Maximum number of collections to return per page', ge=1, le=10000),
+    ] = 1000
+    cursor: Annotated[
+        str | None,
+        Field(description='Opaque cursor from a previous response to fetch the next page'),
+    ] = None
+
+
+class GetCollectionListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the collection list to retrieve')]
+    resolve: Annotated[
+        bool | None,
+        Field(
+            description='Whether to apply filters and return resolved collections (default: true)'
+        ),
+    ] = True
+    pagination: Annotated[
+        Pagination | None,
+        Field(
+            description='Pagination parameters. Uses higher limits than standard pagination because collection lists can contain thousands of entries.'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/get_collection_list_response.py b/src/adcp/types/generated_poc/collection/get_collection_list_response.py
new file mode 100644
index 000000000..e4cd0d1e7
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/get_collection_list_response.py
@@ -0,0 +1,98 @@
+# generated by datamodel-codegen:
+#   filename:  collection/get_collection_list_response.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AwareDatetime, ConfigDict, Field
+
+from ..core import content_rating as content_rating_1
+from ..core import ext as ext_1
+from ..core import pagination_response
+from ..enums import distribution_identifier_type
+from ..enums import genre_taxonomy as genre_taxonomy_1
+from . import collection_list
+
+
+class DistributionId(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    type: Annotated[
+        distribution_identifier_type.DistributionIdentifierType,
+        Field(description='Type of distribution identifier'),
+    ]
+    value: Annotated[str, Field(description='The identifier value')]
+
+
+class Kind(Enum):
+    series = 'series'
+    publication = 'publication'
+    event_series = 'event_series'
+    rotation = 'rotation'
+
+
+CoverageGap = DistributionId
+
+
+class Collection(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    collection_rid: Annotated[
+        str | None,
+        Field(
+            description='Registry-assigned stable identifier for this collection. Present when the collection has been registered in the collection registry.'
+        ),
+    ] = None
+    name: Annotated[str, Field(description='Human-readable collection name')]
+    distribution_ids: Annotated[
+        list[DistributionId] | None,
+        Field(description='Platform-independent identifiers for cross-publisher matching'),
+    ] = None
+    content_rating: Annotated[
+        content_rating_1.ContentRating | None,
+        Field(description='Baseline content rating for this collection'),
+    ] = None
+    genre: Annotated[list[str] | None, Field(description='Genre tags for this collection')] = None
+    genre_taxonomy: Annotated[
+        genre_taxonomy_1.GenreTaxonomy | None, Field(description='Taxonomy system for genre values')
+    ] = None
+    kind: Annotated[Kind | None, Field(description='What kind of content program this is')] = None
+
+
+class GetCollectionListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[
+        collection_list.CollectionList,
+        Field(description='The collection list metadata (always returned)'),
+    ]
+    collections: Annotated[
+        list[Collection] | None,
+        Field(
+            description='Resolved collections that passed filters (if resolve=true). Each entry contains identification and key metadata for seller matching.'
+        ),
+    ] = None
+    pagination: pagination_response.PaginationResponse | None = None
+    resolved_at: Annotated[
+        AwareDatetime | None, Field(description='When the list was resolved')
+    ] = None
+    cache_valid_until: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Cache expiration timestamp. Re-fetch the list after this time to get updated collections.'
+        ),
+    ] = None
+    coverage_gaps: Annotated[
+        dict[str, list[CoverageGap]] | None,
+        Field(
+            description="Collections included in the list despite missing metadata for a filtered dimension. Maps dimension name (e.g., 'genre', 'content_rating') to arrays of distribution identifiers for collections not covered. Only present when filters are applied and some collections lack the filtered metadata."
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/list_collection_lists_request.py b/src/adcp/types/generated_poc/collection/list_collection_lists_request.py
new file mode 100644
index 000000000..611ec195c
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/list_collection_lists_request.py
@@ -0,0 +1,37 @@
+# generated by datamodel-codegen:
+#   filename:  collection/list_collection_lists_request.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import context as context_1
+from ..core import ext as ext_1
+from ..core import pagination_request
+
+
+class ListCollectionListsRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    principal: Annotated[
+        str | None, Field(description='Filter to lists owned by this principal')
+    ] = None
+    name_contains: Annotated[
+        str | None, Field(description='Filter to lists whose name contains this string')
+    ] = None
+    pagination: pagination_request.PaginationRequest | None = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/list_collection_lists_response.py b/src/adcp/types/generated_poc/collection/list_collection_lists_response.py
new file mode 100644
index 000000000..cefcbfa6a
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/list_collection_lists_response.py
@@ -0,0 +1,26 @@
+# generated by datamodel-codegen:
+#   filename:  collection/list_collection_lists_response.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import ext as ext_1
+from ..core import pagination_response
+from . import collection_list
+
+
+class ListCollectionListsResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    lists: Annotated[
+        list[collection_list.CollectionList],
+        Field(description='Array of collection lists (metadata only, not resolved collections)'),
+    ]
+    pagination: pagination_response.PaginationResponse | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/collection/update_collection_list_request.py b/src/adcp/types/generated_poc/collection/update_collection_list_request.py
new file mode 100644
index 000000000..63531d308
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/update_collection_list_request.py
@@ -0,0 +1,64 @@
+# generated by datamodel-codegen:
+#   filename:  collection/update_collection_list_request.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import AnyUrl, ConfigDict, Field
+
+from ..core import brand_ref
+from ..core import context as context_1
+from ..core import ext as ext_1
+from . import base_collection_source, collection_list_filters
+
+
+class UpdateCollectionListRequest(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    adcp_major_version: Annotated[
+        int | None,
+        Field(
+            description="The AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.",
+            ge=1,
+            le=99,
+        ),
+    ] = None
+    list_id: Annotated[str, Field(description='ID of the collection list to update')]
+    name: Annotated[str | None, Field(description='New name for the list')] = None
+    description: Annotated[str | None, Field(description='New description')] = None
+    base_collections: Annotated[
+        list[base_collection_source.BaseCollectionSource] | None,
+        Field(
+            description='Complete replacement for the base collections list (not a patch). Each entry is a discriminated union: distribution_ids (platform-independent identifiers), publisher_collections (publisher_domain + collection_ids), or publisher_genres (publisher_domain + genres).'
+        ),
+    ] = None
+    filters: Annotated[
+        collection_list_filters.CollectionListFilters | None,
+        Field(description='Complete replacement for the filters (not a patch)'),
+    ] = None
+    brand: Annotated[
+        brand_ref.BrandReference | None,
+        Field(
+            description='Update brand reference. Resolved to full brand identity at execution time.'
+        ),
+    ] = None
+    webhook_url: Annotated[
+        AnyUrl | None,
+        Field(
+            description='Update the webhook URL for list change notifications (set to empty string to remove)'
+        ),
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
+    idempotency_key: Annotated[
+        str | None,
+        Field(
+            description='Client-generated unique key for at-most-once execution. If a request with the same key has already been processed, the server returns the original response without re-processing. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.',
+            max_length=255,
+            min_length=16,
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/collection/update_collection_list_response.py b/src/adcp/types/generated_poc/collection/update_collection_list_response.py
new file mode 100644
index 000000000..1edf6e959
--- /dev/null
+++ b/src/adcp/types/generated_poc/collection/update_collection_list_response.py
@@ -0,0 +1,23 @@
+# generated by datamodel-codegen:
+#   filename:  collection/update_collection_list_response.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..core import ext as ext_1
+from . import collection_list
+
+
+class UpdateCollectionListResponse(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='forbid',
+    )
+    list: Annotated[
+        collection_list.CollectionList, Field(description='The updated collection list')
+    ]
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/ad_inventory_config.py b/src/adcp/types/generated_poc/core/ad_inventory_config.py
index 45c78d988..18108c9b5 100644
--- a/src/adcp/types/generated_poc/core/ad_inventory_config.py
+++ b/src/adcp/types/generated_poc/core/ad_inventory_config.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/ad_inventory_config.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,6 +17,9 @@ class AdInventoryConfiguration(AdCPBaseModel):
     expected_breaks: Annotated[
         int, Field(description='Number of planned ad breaks in the installment', ge=0)
     ]
+    total_ad_seconds: Annotated[
+        int | None, Field(description='Total seconds of ad time across all breaks', ge=0)
+    ] = None
     max_ad_duration_seconds: Annotated[
         int | None,
         Field(
@@ -24,18 +27,15 @@ class AdInventoryConfiguration(AdCPBaseModel):
             ge=1,
         ),
     ] = None
-    supported_formats: Annotated[
-        list[str] | None,
-        Field(
-            description="Ad format types supported in breaks (e.g., 'video', 'audio', 'display')"
-        ),
-    ] = None
-    total_ad_seconds: Annotated[
-        int | None, Field(description='Total seconds of ad time across all breaks', ge=0)
-    ] = None
     unplanned_breaks: Annotated[
         bool | None,
         Field(
             description='Whether ad breaks are dynamic and driven by live conditions (sports timeouts, election coverage). When false, all breaks are pre-defined.'
         ),
     ] = None
+    supported_formats: Annotated[
+        list[str] | None,
+        Field(
+            description="Ad format types supported in breaks (e.g., 'video', 'audio', 'display')"
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/assets/brief_asset.py b/src/adcp/types/generated_poc/core/assets/brief_asset.py
index dc2eb5d72..008a6ddc7 100644
--- a/src/adcp/types/generated_poc/core/assets/brief_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/brief_asset.py
@@ -1,11 +1,9 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/brief_asset.json
-#   timestamp: 2026-02-28T17:39:50+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
 from ..creative_brief import CreativeBrief
 
-
-class BriefAsset(CreativeBrief):
-    pass
+BriefAsset = CreativeBrief
diff --git a/src/adcp/types/generated_poc/core/assets/catalog_asset.py b/src/adcp/types/generated_poc/core/assets/catalog_asset.py
index 4d6bdd804..b73409705 100644
--- a/src/adcp/types/generated_poc/core/assets/catalog_asset.py
+++ b/src/adcp/types/generated_poc/core/assets/catalog_asset.py
@@ -1,11 +1,9 @@
 # generated by datamodel-codegen:
 #   filename:  core/assets/catalog_asset.json
-#   timestamp: 2026-02-28T17:39:50+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
 from ..catalog import Catalog
 
-
-class CatalogAsset(Catalog):
-    pass
+CatalogAsset = Catalog
diff --git a/src/adcp/types/generated_poc/core/cancellation_policy.py b/src/adcp/types/generated_poc/core/cancellation_policy.py
new file mode 100644
index 000000000..2cc973a9d
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/cancellation_policy.py
@@ -0,0 +1,62 @@
+# generated by datamodel-codegen:
+#   filename:  core/cancellation_policy.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from . import duration
+
+
+class Type(Enum):
+    percent_remaining = 'percent_remaining'
+    full_commitment = 'full_commitment'
+    fixed_fee = 'fixed_fee'
+    none = 'none'
+
+
+class CancellationFee(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    type: Annotated[
+        Type,
+        Field(
+            description="Fee calculation method. 'percent_remaining': percentage of remaining uncommitted spend. 'full_commitment': buyer owes the full committed budget regardless of delivery. 'fixed_fee': flat monetary amount. 'none': no financial fee (cancellation with notice is free)."
+        ),
+    ]
+    rate: Annotated[
+        float | None,
+        Field(
+            description="Fee rate as a decimal proportion of remaining committed spend. Required when type is 'percent_remaining' (e.g., 0.5 means 50% of remaining spend).",
+            ge=0.0,
+            le=1.0,
+        ),
+    ] = None
+    amount: Annotated[
+        float | None,
+        Field(
+            description="Fixed fee amount in the buy's currency. Required when type is 'fixed_fee'.",
+            ge=0.0,
+        ),
+    ] = None
+
+
+class CancellationPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    notice_period: Annotated[
+        duration.Duration,
+        Field(
+            description="Minimum notice period before cancellation takes effect (e.g., { interval: 30, unit: 'days' }). A guaranteed buy canceled without sufficient notice incurs the declared cancellation fee."
+        ),
+    ]
+    cancellation_fee: Annotated[
+        CancellationFee, Field(description='Fee applied when the notice period is not met.')
+    ]
diff --git a/src/adcp/types/generated_poc/core/collection_distribution.py b/src/adcp/types/generated_poc/core/collection_distribution.py
index 7f13a79b9..6e8c28f0a 100644
--- a/src/adcp/types/generated_poc/core/collection_distribution.py
+++ b/src/adcp/types/generated_poc/core/collection_distribution.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/collection_distribution.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -27,6 +27,12 @@ class CollectionDistribution(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    publisher_domain: Annotated[
+        str,
+        Field(
+            description="Domain of the publisher platform where the collection is distributed (e.g., 'youtube.com', 'spotify.com')"
+        ),
+    ]
     identifiers: Annotated[
         list[Identifier],
         Field(
@@ -34,9 +40,3 @@ class CollectionDistribution(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    publisher_domain: Annotated[
-        str,
-        Field(
-            description="Domain of the publisher platform where the collection is distributed (e.g., 'youtube.com', 'spotify.com')"
-        ),
-    ]
diff --git a/src/adcp/types/generated_poc/core/context.py b/src/adcp/types/generated_poc/core/context.py
index b81eaf3c1..62cd4a1dc 100644
--- a/src/adcp/types/generated_poc/core/context.py
+++ b/src/adcp/types/generated_poc/core/context.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/context.json
-#   timestamp: 2026-02-23T01:56:40+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 
 
 class ContextObject(AdCPBaseModel):
+    pass
     model_config = ConfigDict(
         extra='allow',
     )
diff --git a/src/adcp/types/generated_poc/core/creative_asset.py b/src/adcp/types/generated_poc/core/creative_asset.py
index b437eb573..0b3a1d9d5 100644
--- a/src/adcp/types/generated_poc/core/creative_asset.py
+++ b/src/adcp/types/generated_poc/core/creative_asset.py
@@ -1,13 +1,13 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_asset.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, StringConstraints
+from pydantic import ConfigDict, Field
 
 from ..enums import creative_status
 from . import format_id as format_id_1
@@ -50,7 +50,7 @@ class CreativeAsset(AdCPBaseModel):
     )
     assets: Annotated[
         dict[
-            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            str,
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
diff --git a/src/adcp/types/generated_poc/core/creative_manifest.py b/src/adcp/types/generated_poc/core/creative_manifest.py
index eb97d7c6d..1615872bd 100644
--- a/src/adcp/types/generated_poc/core/creative_manifest.py
+++ b/src/adcp/types/generated_poc/core/creative_manifest.py
@@ -1,13 +1,13 @@
 # generated by datamodel-codegen:
 #   filename:  core/creative_manifest.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field, StringConstraints
+from pydantic import ConfigDict, Field
 
 from . import ext as ext_1
 from . import format_id as format_id_1
@@ -37,7 +37,7 @@ class CreativeManifest(AdCPBaseModel):
     )
     assets: Annotated[
         dict[
-            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            str,
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
diff --git a/src/adcp/types/generated_poc/core/diagnostic_issue.py b/src/adcp/types/generated_poc/core/diagnostic_issue.py
index dfa5bf7ba..ea26a430f 100644
--- a/src/adcp/types/generated_poc/core/diagnostic_issue.py
+++ b/src/adcp/types/generated_poc/core/diagnostic_issue.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/diagnostic_issue.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -21,13 +21,13 @@ class DiagnosticIssue(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    message: Annotated[
-        str,
-        Field(description='Human/agent-readable description of the issue and how to resolve it.'),
-    ]
     severity: Annotated[
         Severity,
         Field(
             description="'error': blocks optimization until resolved. 'warning': optimization works but effectiveness is reduced. 'info': suggestion for improvement."
         ),
     ]
+    message: Annotated[
+        str,
+        Field(description='Human/agent-readable description of the issue and how to resolve it.'),
+    ]
diff --git a/src/adcp/types/generated_poc/core/error.py b/src/adcp/types/generated_poc/core/error.py
index c351d52cb..c97fbc8a9 100644
--- a/src/adcp/types/generated_poc/core/error.py
+++ b/src/adcp/types/generated_poc/core/error.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/error.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -29,20 +29,12 @@ class Error(AdCPBaseModel):
             min_length=1,
         ),
     ]
-    details: Annotated[
-        dict[str, Any] | None, Field(description='Additional task-specific error details')
-    ] = None
+    message: Annotated[str, Field(description='Human-readable error message')]
     field: Annotated[
         str | None,
         Field(description="Field path associated with the error (e.g., 'packages[0].targeting')"),
     ] = None
-    message: Annotated[str, Field(description='Human-readable error message')]
-    recovery: Annotated[
-        Recovery | None,
-        Field(
-            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
-        ),
-    ] = None
+    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
     retry_after: Annotated[
         float | None,
         Field(
@@ -51,4 +43,12 @@ class Error(AdCPBaseModel):
             le=3600.0,
         ),
     ] = None
-    suggestion: Annotated[str | None, Field(description='Suggested fix for the error')] = None
+    details: Annotated[
+        dict[str, Any] | None, Field(description='Additional task-specific error details')
+    ] = None
+    recovery: Annotated[
+        Recovery | None,
+        Field(
+            description='Agent recovery classification. transient: retry after delay (rate limit, service unavailable, timeout). correctable: fix the request and resend (invalid field, budget too low, creative rejected). terminal: requires human action (account suspended, payment required, account not found).'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/ext.py b/src/adcp/types/generated_poc/core/ext.py
index 8c11e772e..976684fbb 100644
--- a/src/adcp/types/generated_poc/core/ext.py
+++ b/src/adcp/types/generated_poc/core/ext.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/ext.json
-#   timestamp: 2026-02-23T01:56:40+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -9,6 +9,7 @@
 
 
 class ExtensionObject(AdCPBaseModel):
+    pass
     model_config = ConfigDict(
         extra='allow',
     )
diff --git a/src/adcp/types/generated_poc/core/format.py b/src/adcp/types/generated_poc/core/format.py
index 58c5c9e5f..5c005369d 100644
--- a/src/adcp/types/generated_poc/core/format.py
+++ b/src/adcp/types/generated_poc/core/format.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/format.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -123,8 +123,7 @@ class Renders(AdCPBaseModel):
     ]
 
 
-class Dimensions1(Dimensions):
-    pass
+Dimensions1 = Dimensions
 
 
 class Renders1(AdCPBaseModel):
diff --git a/src/adcp/types/generated_poc/core/geo_breakdown_support.py b/src/adcp/types/generated_poc/core/geo_breakdown_support.py
index 59b83f19b..fb0341db8 100644
--- a/src/adcp/types/generated_poc/core/geo_breakdown_support.py
+++ b/src/adcp/types/generated_poc/core/geo_breakdown_support.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/geo_breakdown_support.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -9,8 +9,6 @@
 from adcp.types.base import AdCPBaseModel
 from pydantic import ConfigDict, Field
 
-from ..enums import metro_system, postal_system
-
 
 class GeographicBreakdownSupport(AdCPBaseModel):
     model_config = ConfigDict(
@@ -20,13 +18,13 @@ class GeographicBreakdownSupport(AdCPBaseModel):
         bool | None, Field(description='Supports country-level geo breakdown (ISO 3166-1 alpha-2)')
     ] = None
     metro: Annotated[
-        dict[metro_system.MetroAreaSystem, bool] | None,
+        dict[str, bool] | None,
         Field(
             description='Metro area breakdown support. Keys are metro-system enum values; true means supported.'
         ),
     ] = None
     postal_area: Annotated[
-        dict[postal_system.PostalCodeSystem, bool] | None,
+        dict[str, bool] | None,
         Field(
             description='Postal area breakdown support. Keys are postal-system enum values; true means supported.'
         ),
diff --git a/src/adcp/types/generated_poc/core/limited_series.py b/src/adcp/types/generated_poc/core/limited_series.py
index a72f99c47..8bb677d90 100644
--- a/src/adcp/types/generated_poc/core/limited_series.py
+++ b/src/adcp/types/generated_poc/core/limited_series.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/limited_series.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -14,12 +14,12 @@ class LimitedSeries(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    ends: Annotated[AwareDatetime | None, Field(description='When the series ends (ISO 8601)')] = (
-        None
-    )
-    starts: Annotated[
-        AwareDatetime | None, Field(description='When the series begins (ISO 8601)')
-    ] = None
     total_installments: Annotated[
         int, Field(description='Planned number of installments in the series', ge=1)
     ]
+    starts: Annotated[
+        AwareDatetime | None, Field(description='When the series begins (ISO 8601)')
+    ] = None
+    ends: Annotated[AwareDatetime | None, Field(description='When the series ends (ISO 8601)')] = (
+        None
+    )
diff --git a/src/adcp/types/generated_poc/core/measurement_terms.py b/src/adcp/types/generated_poc/core/measurement_terms.py
new file mode 100644
index 000000000..15faad569
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/measurement_terms.py
@@ -0,0 +1,71 @@
+# generated by datamodel-codegen:
+#   filename:  core/measurement_terms.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..enums import makegood_remedy
+from . import brand_ref
+
+
+class BillingMeasurement(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    vendor: Annotated[
+        brand_ref.BrandReference,
+        Field(
+            description="Vendor whose measurement of the billing metric is authoritative for invoicing (e.g., { domain: 'campaignmanager.google.com' } for buyer's DCM, { domain: 'admanager.google.com' } for seller's GAM)."
+        ),
+    ]
+    max_variance_percent: Annotated[
+        float | None,
+        Field(
+            description="Maximum acceptable variance between the billing vendor's count and the other party's count before resolution is triggered (e.g., 10 means a 10% divergence triggers review).",
+            ge=0.0,
+            lt=100.0,
+        ),
+    ] = None
+    measurement_window: Annotated[
+        str | None,
+        Field(
+            description="Which measurement window the billing metric is reconciled against. References a window_id from the product's reporting_capabilities.measurement_windows. For broadcast TV, this is typically 'c7' (live + 7 days DVR). When absent, billing is based on the seller's standard reporting without windowed maturation.",
+            examples=['live', 'c3', 'c7'],
+        ),
+    ] = None
+
+
+class MakegoodPolicy(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    available_remedies: Annotated[
+        list[makegood_remedy.MakegoodRemedy],
+        Field(
+            description='Remedy types the seller supports. Ordered by seller preference (first = preferred). Seller proposes from this list when a breach occurs; buyer accepts or disputes.',
+            min_length=1,
+        ),
+    ]
+
+
+class MeasurementTerms(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    billing_measurement: Annotated[
+        BillingMeasurement | None,
+        Field(
+            description="Which vendor's count of the billing metric governs invoicing. The billing metric is determined by the pricing_model on the selected pricing_option (e.g., impressions for CPM, completed views for CPCV)."
+        ),
+    ] = None
+    makegood_policy: Annotated[
+        MakegoodPolicy | None,
+        Field(
+            description='Remedies available when a performance standard or billing measurement variance is breached. Seller declares which remedy types they support. When a breach occurs, the seller proposes a remedy from this menu; the buyer accepts or disputes.'
+        ),
+    ] = None
diff --git a/src/adcp/types/generated_poc/core/performance_standard.py b/src/adcp/types/generated_poc/core/performance_standard.py
new file mode 100644
index 000000000..b79411d9b
--- /dev/null
+++ b/src/adcp/types/generated_poc/core/performance_standard.py
@@ -0,0 +1,43 @@
+# generated by datamodel-codegen:
+#   filename:  core/performance_standard.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from typing import Annotated
+
+from adcp.types.base import AdCPBaseModel
+from pydantic import ConfigDict, Field
+
+from ..enums import performance_standard_metric, viewability_standard
+from . import brand_ref
+
+
+class PerformanceStandard(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    metric: Annotated[
+        performance_standard_metric.PerformanceStandardMetric,
+        Field(description='The performance metric this standard applies to.'),
+    ]
+    threshold: Annotated[
+        float,
+        Field(
+            description='Rate threshold as a decimal (e.g., 0.70 for 70%). Whether this is a floor or ceiling depends on the metric: for viewability, completion_rate, brand_safety, attention_score the actual rate must be >= threshold; for ivt the actual rate must be <= threshold.',
+            ge=0.0,
+            le=1.0,
+        ),
+    ]
+    standard: Annotated[
+        viewability_standard.ViewabilityStandard | None,
+        Field(
+            description="Measurement standard. Required when metric is 'viewability' (MRC and GroupM define materially different thresholds). Omit for other metrics."
+        ),
+    ] = None
+    vendor: Annotated[
+        brand_ref.BrandReference,
+        Field(
+            description="Vendor measuring this metric (e.g., { domain: 'doubleverify.com' }). The vendor's brand.json agents array (type: 'measurement') is the discovery point for their measurement agent. When specified on a confirmed package, creatives MUST include tracker_script or tracker_pixel assets from this vendor."
+        ),
+    ]
diff --git a/src/adcp/types/generated_poc/core/product.py b/src/adcp/types/generated_poc/core/product.py
index 95f578b91..aa7d523c2 100644
--- a/src/adcp/types/generated_poc/core/product.py
+++ b/src/adcp/types/generated_poc/core/product.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/product.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -15,6 +15,7 @@
 from ..enums import delivery_type as delivery_type_1
 from ..enums import exclusivity as exclusivity_1
 from ..enums import reach_unit, response_type
+from . import cancellation_policy as cancellation_policy_1
 from . import collection_selector
 from . import creative_policy as creative_policy_1
 from . import data_provider_signal_selector, delivery_forecast
@@ -22,38 +23,51 @@
 from . import format_id as format_id_1
 from . import installment
 from . import measurement_readiness as measurement_readiness_1
+from . import measurement_terms as measurement_terms_1
 from . import outcome_measurement as outcome_measurement_1
-from . import placement, pricing_option, publisher_property_selector
+from . import performance_standard, placement, pricing_option, publisher_property_selector
 from . import reporting_capabilities as reporting_capabilities_1
 
 
-class MatchedGtin(RootModel[str]):
-    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
-
-
-class CatalogMatch(AdCPBaseModel):
-    matched_count: Annotated[
-        int | None,
-        Field(description="Number of catalog items that matched this product's inventory.", ge=0),
-    ] = None
-    matched_gtins: Annotated[
-        list[MatchedGtin] | None,
+class DeliveryMeasurement(AdCPBaseModel):
+    provider: Annotated[
+        str,
         Field(
-            description="GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching."
+            description="Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')"
         ),
-    ] = None
-    matched_ids: Annotated[
-        list[str] | None,
+    ]
+    notes: Annotated[
+        str | None,
         Field(
-            description="Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs)."
+            description="Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')"
         ),
     ] = None
-    submitted_count: Annotated[
-        int, Field(description="Total catalog items evaluated from the buyer's catalog.", ge=0)
-    ]
+
+
+class SupportedMetric(Enum):
+    clicks = 'clicks'
+    views = 'views'
+    completed_views = 'completed_views'
+    viewed_seconds = 'viewed_seconds'
+    attention_seconds = 'attention_seconds'
+    attention_score = 'attention_score'
+    engagements = 'engagements'
+    follows = 'follows'
+    saves = 'saves'
+    profile_visits = 'profile_visits'
+    reach = 'reach'
+
+
+class SupportedViewDuration(RootModel[float]):
+    root: Annotated[float, Field(gt=0.0)]
 
 
 class SupportedTarget(Enum):
+    cost_per = 'cost_per'
+    threshold_rate = 'threshold_rate'
+
+
+class SupportedTarget1(Enum):
     cost_per = 'cost_per'
     per_ad_spend = 'per_ad_spend'
     maximize_value = 'maximize_value'
@@ -70,78 +84,45 @@ class ConversionTracking(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    platform_managed: Annotated[
-        bool | None,
-        Field(
-            description="Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'."
-        ),
-    ] = None
     supported_targets: Annotated[
-        list[SupportedTarget] | None,
+        list[SupportedTarget1] | None,
         Field(
             description='Target kinds available for event goals on this product. Values match target.kind on the optimization goal. cost_per: target cost per conversion event. per_ad_spend: target return on ad spend (requires value_field on event sources). maximize_value: maximize total conversion value without a specific ratio target (requires value_field). Only these target kinds are accepted — goals with unlisted target kinds will be rejected. A goal without a target implicitly maximizes conversion count within budget — no declaration needed for that mode. When omitted, buyers can still set target-less event goals.',
             min_length=1,
         ),
     ] = None
-
-
-class DeliveryMeasurement(AdCPBaseModel):
-    notes: Annotated[
-        str | None,
+    platform_managed: Annotated[
+        bool | None,
         Field(
-            description="Additional details about measurement methodology in plain language (e.g., 'MRC-accredited viewability. 50% in-view for 1s display / 2s video', 'Panel-based demographic measurement updated monthly')"
+            description="Whether the seller provides its own always-on measurement (e.g. Amazon sales attribution for Amazon advertisers). When true, sync_event_sources response will include seller-managed event sources with managed_by='seller'."
         ),
     ] = None
-    provider: Annotated[
-        str,
-        Field(
-            description="Measurement provider(s) used for this product (e.g., 'Google Ad Manager with IAS viewability', 'Nielsen DAR', 'Geopath for DOOH impressions')"
-        ),
-    ]
 
 
-class MaterialSubmission(AdCPBaseModel):
-    model_config = ConfigDict(
-        extra='allow',
-    )
-    email: Annotated[
-        EmailStr | None, Field(description='Email address for creative material submission')
+class MatchedGtin(RootModel[str]):
+    root: Annotated[str, Field(pattern='^[0-9]{8,14}$')]
+
+
+class CatalogMatch(AdCPBaseModel):
+    matched_gtins: Annotated[
+        list[MatchedGtin] | None,
+        Field(
+            description="GTINs from the buyer's catalog that are eligible on this product's inventory. Standard GTIN formats (GTIN-8 through GTIN-14). Only present for product-type catalogs with GTIN matching."
+        ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    instructions: Annotated[
-        str | None,
+    matched_ids: Annotated[
+        list[str] | None,
         Field(
-            description='Human-readable instructions for material submission (file naming conventions, shipping address, etc.)',
-            max_length=2000,
+            description="Item IDs from the buyer's catalog that matched this product's inventory. The ID type depends on the catalog type and content_id_type (e.g., SKUs for product catalogs, job_ids for job catalogs, offering_ids for offering catalogs)."
         ),
     ] = None
-    url: Annotated[
-        AnyUrl | None,
-        Field(description='HTTPS URL for uploading or submitting physical creative materials'),
+    matched_count: Annotated[
+        int | None,
+        Field(description="Number of catalog items that matched this product's inventory.", ge=0),
     ] = None
-
-
-class SupportedMetric(Enum):
-    clicks = 'clicks'
-    views = 'views'
-    completed_views = 'completed_views'
-    viewed_seconds = 'viewed_seconds'
-    attention_seconds = 'attention_seconds'
-    attention_score = 'attention_score'
-    engagements = 'engagements'
-    follows = 'follows'
-    saves = 'saves'
-    profile_visits = 'profile_visits'
-    reach = 'reach'
-
-
-class SupportedTarget1(Enum):
-    cost_per = 'cost_per'
-    threshold_rate = 'threshold_rate'
-
-
-class SupportedViewDuration(RootModel[float]):
-    root: Annotated[float, Field(gt=0.0)]
+    submitted_count: Annotated[
+        int, Field(description="Total catalog items evaluated from the buyer's catalog.", ge=0)
+    ]
 
 
 class ProductCard(AdCPBaseModel):
@@ -198,6 +179,27 @@ class Provider(AdCPBaseModel):
     ] = False
 
 
+class MaterialSubmission(AdCPBaseModel):
+    model_config = ConfigDict(
+        extra='allow',
+    )
+    url: Annotated[
+        AnyUrl | None,
+        Field(description='HTTPS URL for uploading or submitting physical creative materials'),
+    ] = None
+    email: Annotated[
+        EmailStr | None, Field(description='Email address for creative material submission')
+    ] = None
+    instructions: Annotated[
+        str | None,
+        Field(
+            description='Human-readable instructions for material submission (file naming conventions, shipping address, etc.)',
+            max_length=2000,
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
+
+
 class MetricOptimization(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
@@ -216,18 +218,18 @@ class MetricOptimization(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    supported_targets: Annotated[
-        list[SupportedTarget1] | None,
-        Field(
-            description='Target kinds available for metric goals on this product. Values match target.kind on the optimization goal. Only these target kinds are accepted — goals with unlisted target kinds will be rejected. When omitted, buyers can set target-less metric goals (maximize volume within budget) but cannot set specific targets.'
-        ),
-    ] = None
     supported_view_durations: Annotated[
         list[SupportedViewDuration] | None,
         Field(
             description="Video view duration thresholds (in seconds) this product supports for completed_views goals. Only relevant when supported_metrics includes 'completed_views'. When absent, the seller uses their platform default. Buyers must set view_duration_seconds to a value in this list — sellers reject unsupported values."
         ),
     ] = None
+    supported_targets: Annotated[
+        list[SupportedTarget] | None,
+        Field(
+            description='Target kinds available for metric goals on this product. Values match target.kind on the optimization goal. Only these target kinds are accepted — goals with unlisted target kinds will be rejected. When omitted, buyers can set target-less metric goals (maximize volume within budget) but cannot set specific targets.'
+        ),
+    ] = None
 
 
 class TrustedMatch(AdCPBaseModel):
@@ -240,16 +242,20 @@ class TrustedMatch(AdCPBaseModel):
             description="Whether this product supports Context Match requests. When true, the publisher's TMP router will send context match requests to registered providers for this product's inventory."
         ),
     ]
-    dynamic_brands: Annotated[
+    identity_match: Annotated[
         bool | None,
         Field(
-            description="Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand — the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context."
+            description="Whether this product supports Identity Match requests. When true, the publisher's TMP router will send identity match requests to evaluate user eligibility."
         ),
     ] = False
-    identity_match: Annotated[
+    response_types: Annotated[
+        list[response_type.TmpResponseType] | None,
+        Field(description='What the publisher can accept back from context match.', min_length=1),
+    ] = [response_type.TmpResponseType.activation]
+    dynamic_brands: Annotated[
         bool | None,
         Field(
-            description="Whether this product supports Identity Match requests. When true, the publisher's TMP router will send identity match requests to evaluate user eligibility."
+            description="Whether the buyer can select a brand at match time. When false (default), the brand must be specified on the media buy/package. When true, the buyer's offer can include any brand — the publisher applies approval rules at match time. Enables multi-brand agreements where the holding company or buyer agent selects brand based on context."
         ),
     ] = False
     providers: Annotated[
@@ -259,119 +265,118 @@ class TrustedMatch(AdCPBaseModel):
             min_length=1,
         ),
     ] = None
-    response_types: Annotated[
-        list[response_type.TmpResponseType] | None,
-        Field(description='What the publisher can accept back from context match.', min_length=1),
-    ] = [response_type.TmpResponseType.activation]
 
 
 class Product(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    brief_relevance: Annotated[
-        str | None,
-        Field(
-            description='Explanation of why this product matches the brief (only included when brief is provided)'
-        ),
-    ] = None
-    catalog_match: Annotated[
-        CatalogMatch | None,
-        Field(
-            description='When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).'
-        ),
-    ] = None
-    catalog_types: Annotated[
-        list[catalog_type.CatalogType] | None,
+    product_id: Annotated[str, Field(description='Unique identifier for the product')]
+    name: Annotated[str, Field(description='Human-readable product name')]
+    description: Annotated[
+        str, Field(description='Detailed description of the product and its inventory')
+    ]
+    publisher_properties: Annotated[
+        list[publisher_property_selector.PublisherPropertySelector],
         Field(
-            description='Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares ["product"], a job board declares ["job", "offering"]. Buyers match synced catalogs to products via this field.',
+            description="Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
             min_length=1,
         ),
-    ] = None
+    ]
     channels: Annotated[
         list[channels_1.MediaChannel] | None,
         Field(
             description="Advertising channels this product is sold as. Products inherit from their properties' supported_channels but may narrow the scope. For example, a product covering YouTube properties might be sold as ['ctv'] even though those properties support ['olv', 'social', 'ctv']."
         ),
     ] = None
-    collection_targeting_allowed: Annotated[
-        bool | None,
+    format_ids: Annotated[
+        list[format_id_1.FormatId],
         Field(
-            description="Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle — buyers get all listed collections. When true, buyers can select specific collections in the media buy."
+            description='Array of supported creative format IDs - structured format_id objects with agent_url and id'
         ),
-    ] = False
-    collections: Annotated[
-        list[collection_selector.CollectionSelector] | None,
+    ]
+    placements: Annotated[
+        list[placement.Placement] | None,
         Field(
-            description='Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.',
+            description='Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.',
             min_length=1,
         ),
     ] = None
-    conversion_tracking: Annotated[
-        ConversionTracking | None,
+    delivery_type: delivery_type_1.DeliveryType
+    exclusivity: Annotated[
+        exclusivity_1.Exclusivity | None,
         Field(
-            description="Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities."
+            description="Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements."
         ),
     ] = None
-    creative_policy: creative_policy_1.CreativePolicy | None = None
-    data_provider_signals: Annotated[
-        list[data_provider_signal_selector.DataProviderSignalSelector] | None,
+    pricing_options: Annotated[
+        list[pricing_option.PricingOption],
+        Field(description='Available pricing models for this product', min_length=1),
+    ]
+    forecast: Annotated[
+        delivery_forecast.DeliveryForecast | None,
         Field(
-            description="Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization."
+            description='Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal.'
         ),
     ] = None
+    outcome_measurement: outcome_measurement_1.OutcomeMeasurement | None = None
     delivery_measurement: Annotated[
         DeliveryMeasurement | None,
         Field(
             description='Measurement provider and methodology for delivery metrics. The buyer accepts the declared provider as the source of truth for the buy. When absent, buyers should apply their own measurement defaults.'
         ),
     ] = None
-    delivery_type: delivery_type_1.DeliveryType
-    description: Annotated[
-        str, Field(description='Detailed description of the product and its inventory')
-    ]
-    enforced_policies: Annotated[
-        list[str] | None,
+    measurement_terms: Annotated[
+        measurement_terms_1.MeasurementTerms | None,
         Field(
-            description='Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.'
+            description="Seller's default billing measurement and makegood terms. Declares who counts the billing metric and what remedies apply when thresholds are breached. Buyers may propose different terms at media buy creation — sellers accept, reject (TERMS_REJECTED), or adjust per their policy."
         ),
     ] = None
-    exclusivity: Annotated[
-        exclusivity_1.Exclusivity | None,
+    performance_standards: Annotated[
+        list[performance_standard.PerformanceStandard] | None,
         Field(
-            description="Whether this product offers exclusive access to its inventory. Defaults to 'none' when absent. Most relevant for guaranteed products tied to specific collections or placements."
+            description="Seller's default performance standards for this product: viewability, IVT, completion rate, brand safety, attention score. Buyers may propose different standards at media buy creation. When absent, no structured performance standards apply.",
+            min_length=1,
         ),
     ] = None
-    expires_at: Annotated[
-        AwareDatetime | None,
+    cancellation_policy: Annotated[
+        cancellation_policy_1.CancellationPolicy | None,
         Field(
-            description='Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it.'
+            description='Cancellation terms for this product. Declares the minimum notice period required before cancellation takes effect and any penalties for insufficient notice. Relevant for guaranteed delivery products. Buyers accept these terms by creating a media buy against the product.'
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    forecast: Annotated[
-        delivery_forecast.DeliveryForecast | None,
+    reporting_capabilities: reporting_capabilities_1.ReportingCapabilities
+    creative_policy: creative_policy_1.CreativePolicy | None = None
+    is_custom: Annotated[bool | None, Field(description='Whether this is a custom product')] = None
+    property_targeting_allowed: Annotated[
+        bool | None,
         Field(
-            description='Forecasted delivery metrics for this product. Gives buyers an estimate of expected performance before requesting a proposal.'
+            description="Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results."
+        ),
+    ] = False
+    data_provider_signals: Annotated[
+        list[data_provider_signal_selector.DataProviderSignalSelector] | None,
+        Field(
+            description="Data provider signals available for this product. Buyers fetch signal definitions from each data provider's adagents.json and can verify agent authorization."
         ),
     ] = None
-    format_ids: Annotated[
-        list[format_id_1.FormatId],
+    signal_targeting_allowed: Annotated[
+        bool | None,
         Field(
-            description='Array of supported creative format IDs - structured format_id objects with agent_url and id'
+            description='Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals.'
         ),
-    ]
-    installments: Annotated[
-        list[installment.Installment] | None,
+    ] = False
+    catalog_types: Annotated[
+        list[catalog_type.CatalogType] | None,
         Field(
-            description='Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).'
+            description='Catalog types this product supports for catalog-driven campaigns. A sponsored product listing declares ["product"], a job board declares ["job", "offering"]. Buyers match synced catalogs to products via this field.',
+            min_length=1,
         ),
     ] = None
-    is_custom: Annotated[bool | None, Field(description='Whether this is a custom product')] = None
-    material_submission: Annotated[
-        MaterialSubmission | None,
+    metric_optimization: Annotated[
+        MetricOptimization | None,
         Field(
-            description="Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation."
+            description="Metric optimization capabilities for this product. Presence indicates the product supports optimization_goals with kind: 'metric'. No event source or conversion tracking setup required — the seller tracks these metrics natively."
         ),
     ] = None
     max_optimization_goals: Annotated[
@@ -387,25 +392,30 @@ class Product(AdCPBaseModel):
             description="Assessment of whether the buyer's event source setup is sufficient for this product to optimize effectively. Only present when the seller can evaluate the buyer's account context. Buyers should check this before creating media buys with event-based optimization goals."
         ),
     ] = None
-    metric_optimization: Annotated[
-        MetricOptimization | None,
+    conversion_tracking: Annotated[
+        ConversionTracking | None,
         Field(
-            description="Metric optimization capabilities for this product. Presence indicates the product supports optimization_goals with kind: 'metric'. No event source or conversion tracking setup required — the seller tracks these metrics natively."
+            description="Conversion event tracking for this product. Presence indicates the product supports optimization_goals with kind: 'event'. Seller-level capabilities (supported event types, UID types, attribution windows) are declared in get_adcp_capabilities."
         ),
     ] = None
-    name: Annotated[str, Field(description='Human-readable product name')]
-    outcome_measurement: outcome_measurement_1.OutcomeMeasurement | None = None
-    placements: Annotated[
-        list[placement.Placement] | None,
+    catalog_match: Annotated[
+        CatalogMatch | None,
         Field(
-            description='Optional array of specific placements within this product. When provided, buyers can target specific placements when assigning creatives.',
-            min_length=1,
+            description='When the buyer provides a catalog on get_products, indicates which catalog items are eligible for this product. Only present for products where catalog matching is relevant (e.g., sponsored product listings, job boards, hotel ads).'
+        ),
+    ] = None
+    brief_relevance: Annotated[
+        str | None,
+        Field(
+            description='Explanation of why this product matches the brief (only included when brief is provided)'
+        ),
+    ] = None
+    expires_at: Annotated[
+        AwareDatetime | None,
+        Field(
+            description='Expiration timestamp. After this time, the product may no longer be available for purchase and create_media_buy may reject packages referencing it.'
         ),
     ] = None
-    pricing_options: Annotated[
-        list[pricing_option.PricingOption],
-        Field(description='Available pricing models for this product', min_length=1),
-    ]
     product_card: Annotated[
         ProductCard | None,
         Field(
@@ -418,30 +428,41 @@ class Product(AdCPBaseModel):
             description='Optional detailed card with carousel and full specifications. Provides rich product presentation similar to media kit pages.'
         ),
     ] = None
-    product_id: Annotated[str, Field(description='Unique identifier for the product')]
-    property_targeting_allowed: Annotated[
+    collections: Annotated[
+        list[collection_selector.CollectionSelector] | None,
+        Field(
+            description='Collections available in this product. Each entry references collections declared in an adagents.json by domain and collection ID. Buyers resolve full collection objects from the referenced adagents.json.',
+            min_length=1,
+        ),
+    ] = None
+    collection_targeting_allowed: Annotated[
         bool | None,
         Field(
-            description="Whether buyers can filter this product to a subset of its publisher_properties. When false (default), the product is 'all or nothing' - buyers must accept all properties or the product is excluded from property_list filtering results."
+            description="Whether buyers can target a subset of this product's collections. When false (default), the product is a bundle — buyers get all listed collections. When true, buyers can select specific collections in the media buy."
         ),
     ] = False
-    publisher_properties: Annotated[
-        list[publisher_property_selector.PublisherPropertySelector],
+    installments: Annotated[
+        list[installment.Installment] | None,
         Field(
-            description="Publisher properties covered by this product. Buyers fetch actual property definitions from each publisher's adagents.json and validate agent authorization. Selection patterns mirror the authorization patterns in adagents.json for consistency.",
-            min_length=1,
+            description='Specific installments included in this product. Each installment references its parent collection via collection_id when the product spans multiple collections. When absent with collections present, the product covers the collections broadly (run-of-collection).'
         ),
-    ]
-    reporting_capabilities: reporting_capabilities_1.ReportingCapabilities | None = None
-    signal_targeting_allowed: Annotated[
-        bool | None,
+    ] = None
+    enforced_policies: Annotated[
+        list[str] | None,
         Field(
-            description='Whether buyers can filter this product to a subset of its data_provider_signals. When false (default), the product includes all listed signals as a bundle. When true, buyers can target specific signals.'
+            description='Registry policy IDs the seller enforces for this product. Enforcement level comes from the policy registry. Buyers can filter products by required policies.'
         ),
-    ] = False
+    ] = None
     trusted_match: Annotated[
         TrustedMatch | None,
         Field(
             description='Trusted Match Protocol capabilities for this product. When present, the product supports real-time contextual and/or identity matching via TMP. Buyers use this to determine what response types the publisher can accept and whether brands can be selected dynamically at match time.'
         ),
     ] = None
+    material_submission: Annotated[
+        MaterialSubmission | None,
+        Field(
+            description="Instructions for submitting physical creative materials (print, static OOH, cinema). Present only for products requiring physical delivery outside the digital creative assignment flow. Buyer agents MUST validate url and email domains against the seller's known domains (from adagents.json) before submitting materials. Never auto-submit without human confirmation."
+        ),
+    ] = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/core/product_filters.py b/src/adcp/types/generated_poc/core/product_filters.py
index 7e93860c8..c9edaf423 100644
--- a/src/adcp/types/generated_poc/core/product_filters.py
+++ b/src/adcp/types/generated_poc/core/product_filters.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/product_filters.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -87,20 +87,16 @@ class TravelTime(AdCPBaseModel):
     value: Annotated[float, Field(description='Travel time limit', ge=1.0)]
 
 
-class Geometry2(Geometry):
-    pass
+Geometry2 = Geometry
 
 
-class TravelTime2(TravelTime):
-    pass
+TravelTime2 = TravelTime
 
 
-class Geometry3(Geometry):
-    pass
+Geometry3 = Geometry
 
 
-class TravelTime3(TravelTime):
-    pass
+TravelTime3 = TravelTime
 
 
 class MatchType(Enum):
@@ -384,7 +380,7 @@ class ProductFilters(AdCPBaseModel):
         list[AnyUrl] | None,
         Field(
             deprecated=True,
-            description='Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.',
+            description='Deprecated: Use trusted_match filter instead. Filter to products executable through specific agentic ad exchanges. URLs are canonical identifiers.'
         ),
     ] = None
     required_features: Annotated[
diff --git a/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
index 66958e16b..43562f738 100644
--- a/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/html_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/html_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, constr
 
 
 class Sandbox(Enum):
@@ -23,7 +23,12 @@ class HtmlAssetRequirements(AdCPBaseModel):
         extra='allow',
     )
     allowed_external_domains: Annotated[
-        list[str] | None,
+        list[
+            constr(
+                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
+            )
+        ]
+        | None,
         Field(
             description='List of domains the HTML creative may reference for external resources. Only applicable when external_resources_allowed is true.'
         ),
diff --git a/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
index cde70e236..eb2538d3d 100644
--- a/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/image_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/image_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
diff --git a/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
index a050b6cf7..a77c79478 100644
--- a/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/javascript_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/javascript_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, constr
 
 
 class ModuleType(Enum):
@@ -22,7 +22,12 @@ class JavascriptAssetRequirements(AdCPBaseModel):
         extra='allow',
     )
     allowed_external_domains: Annotated[
-        list[str] | None,
+        list[
+            constr(
+                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
+            )
+        ]
+        | None,
         Field(
             description='List of domains the JavaScript may reference for external resources. Only applicable when external_resources_allowed is true.'
         ),
diff --git a/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py b/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
index a84385a11..651f09c6c 100644
--- a/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
+++ b/src/adcp/types/generated_poc/core/requirements/url_asset_requirements.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/requirements/url_asset_requirements.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import ConfigDict, Field
+from pydantic import ConfigDict, Field, constr
 
 
 class Protocol(Enum):
@@ -30,7 +30,13 @@ class UrlAssetRequirements(AdCPBaseModel):
         extra='allow',
     )
     allowed_domains: Annotated[
-        list[str] | None, Field(description='List of allowed domains for the URL')
+        list[
+            constr(
+                pattern=r'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]{0,61}[A-Za-z0-9])$'
+            )
+        ]
+        | None,
+        Field(description='List of allowed domains for the URL'),
     ] = None
     macro_support: Annotated[
         bool | None,
diff --git a/src/adcp/types/generated_poc/core/signal_filters.py b/src/adcp/types/generated_poc/core/signal_filters.py
index 876f08e80..7a5b76dc8 100644
--- a/src/adcp/types/generated_poc/core/signal_filters.py
+++ b/src/adcp/types/generated_poc/core/signal_filters.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/signal_filters.json
-#   timestamp: 2026-02-27T02:10:10+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
diff --git a/src/adcp/types/generated_poc/core/special.py b/src/adcp/types/generated_poc/core/special.py
index 12d7d712b..f81b7f3ab 100644
--- a/src/adcp/types/generated_poc/core/special.py
+++ b/src/adcp/types/generated_poc/core/special.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/special.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -16,16 +16,16 @@ class Special(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    name: Annotated[
+        str, Field(description="Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')")
+    ]
     category: Annotated[
         special_category.SpecialCategory | None, Field(description='Category of the event')
     ] = None
+    starts: Annotated[
+        AwareDatetime | None, Field(description='When the event starts (ISO 8601)')
+    ] = None
     ends: Annotated[
         AwareDatetime | None,
         Field(description='When the event ends (ISO 8601). Omit for single-day events.'),
     ] = None
-    name: Annotated[
-        str, Field(description="Name of the event (e.g., 'Olympics 2028', 'Super Bowl LXI')")
-    ]
-    starts: Annotated[
-        AwareDatetime | None, Field(description='When the event starts (ISO 8601)')
-    ] = None
diff --git a/src/adcp/types/generated_poc/core/start_timing.py b/src/adcp/types/generated_poc/core/start_timing.py
index e29480aff..74ed3b8b3 100644
--- a/src/adcp/types/generated_poc/core/start_timing.py
+++ b/src/adcp/types/generated_poc/core/start_timing.py
@@ -1,17 +1,17 @@
 # generated by datamodel-codegen:
 #   filename:  core/start_timing.json
-#   timestamp: 2026-02-23T01:56:40+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
-from typing import Any, Annotated, Literal
+from typing import Any, Annotated
 
 from pydantic import AwareDatetime, Field, RootModel
 
 
-class StartTiming(RootModel[Literal['asap'] | AwareDatetime]):
+class StartTiming(RootModel[str | AwareDatetime]):
     root: Annotated[
-        Literal['asap'] | AwareDatetime,
+        str | AwareDatetime,
         Field(
             description="Campaign start timing: 'asap' or ISO 8601 date-time", title='Start Timing'
         ),
diff --git a/src/adcp/types/generated_poc/core/store_item.py b/src/adcp/types/generated_poc/core/store_item.py
index 95085d00d..f7746bf27 100644
--- a/src/adcp/types/generated_poc/core/store_item.py
+++ b/src/adcp/types/generated_poc/core/store_item.py
@@ -1,10 +1,10 @@
 # generated by datamodel-codegen:
 #   filename:  core/store_item.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
-from typing import Annotated, Literal
+from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
 from pydantic import AnyUrl, ConfigDict, Field
@@ -59,11 +59,7 @@ class StoreItem(AdCPBaseModel):
     ] = None
     ext: ext_1.ExtensionObject | None = None
     hours: Annotated[
-        dict[
-            Literal['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'],
-            str,
-        ]
-        | None,
+        dict[str, str] | None,
         Field(
             description='Operating hours. Keys are ISO day names (monday–sunday), values are time ranges.'
         ),
diff --git a/src/adcp/types/generated_poc/core/talent.py b/src/adcp/types/generated_poc/core/talent.py
index a5d93e961..2708e1cf7 100644
--- a/src/adcp/types/generated_poc/core/talent.py
+++ b/src/adcp/types/generated_poc/core/talent.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/talent.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -16,14 +16,14 @@ class Talent(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
+    role: Annotated[
+        talent_role.TalentRole,
+        Field(description='Role of this person on the collection or installment'),
+    ]
+    name: Annotated[str, Field(description="Person's name as credited on the collection")]
     brand_url: Annotated[
         AnyUrl | None,
         Field(
             description="URL to this person's brand.json entry. Enables buyer agents to evaluate the talent's brand identity and associations."
         ),
     ] = None
-    name: Annotated[str, Field(description="Person's name as credited on the collection")]
-    role: Annotated[
-        talent_role.TalentRole,
-        Field(description='Role of this person on the collection or installment'),
-    ]
diff --git a/src/adcp/types/generated_poc/core/targeting.py b/src/adcp/types/generated_poc/core/targeting.py
index 2c5ccaf8e..b651411da 100644
--- a/src/adcp/types/generated_poc/core/targeting.py
+++ b/src/adcp/types/generated_poc/core/targeting.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  core/targeting.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -158,20 +158,16 @@ class TravelTime(AdCPBaseModel):
     value: Annotated[float, Field(description='Travel time limit.', ge=1.0)]
 
 
-class Geometry5(Geometry):
-    pass
+Geometry5 = Geometry
 
 
-class TravelTime5(TravelTime):
-    pass
+TravelTime5 = TravelTime
 
 
-class Geometry6(Geometry):
-    pass
+Geometry6 = Geometry
 
 
-class TravelTime6(TravelTime):
-    pass
+TravelTime6 = TravelTime
 
 
 class GeoRegion(RootModel[str]):
@@ -430,14 +426,14 @@ class TargetingOverlay(AdCPBaseModel):
         str | None,
         Field(
             deprecated=True,
-            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.',
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to exclude from targeting.'
         ),
     ] = None
     axe_include_segment: Annotated[
         str | None,
         Field(
             deprecated=True,
-            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.',
+            description='Deprecated: Use TMP provider fields instead. AXE segment ID to include for targeting.'
         ),
     ] = None
     daypart_targets: Annotated[
diff --git a/src/adcp/types/generated_poc/creative/list_creatives_response.py b/src/adcp/types/generated_poc/creative/list_creatives_response.py
index a21bcce47..e32aa116f 100644
--- a/src/adcp/types/generated_poc/creative/list_creatives_response.py
+++ b/src/adcp/types/generated_poc/creative/list_creatives_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/list_creatives_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AwareDatetime, ConfigDict, Field, StringConstraints
+from pydantic import AwareDatetime, ConfigDict, Field
 
 from ..core import account as account_1
 from ..core import context as context_1
@@ -139,7 +139,7 @@ class Creative(AdCPBaseModel):
     ] = None
     assets: Annotated[
         dict[
-            Annotated[str, StringConstraints(pattern=r'^[a-z0-9_]+$')],
+            str,
             image_asset.ImageAsset
             | video_asset.VideoAsset
             | audio_asset.AudioAsset
@@ -223,7 +223,7 @@ class ListCreativesResponse(AdCPBaseModel):
     ] = None
     ext: ext_1.ExtensionObject | None = None
     format_summary: Annotated[
-        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], int] | None,
+        dict[str, int] | None,
         Field(
             description="Breakdown of creatives by format. Keys are agent-defined format identifiers, optionally including dimensions (e.g., 'display_static_300x250', 'video_30s_vast'). Key construction is platform-specific — there is no required format."
         ),
diff --git a/src/adcp/types/generated_poc/creative/preview_creative_response.py b/src/adcp/types/generated_poc/creative/preview_creative_response.py
index 33bbfd897..db0168c13 100644
--- a/src/adcp/types/generated_poc/creative/preview_creative_response.py
+++ b/src/adcp/types/generated_poc/creative/preview_creative_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/preview_creative_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -105,8 +105,7 @@ class Results(AdCPBaseModel):
     success: Annotated[Literal[True], Field(description='Indicates this preview request succeeded')]
 
 
-class Preview6(Preview5):
-    pass
+Preview6 = Preview5
 
 
 class Response1(AdCPBaseModel):
diff --git a/src/adcp/types/generated_poc/creative/sync_creatives_async_response_input_required.py b/src/adcp/types/generated_poc/creative/sync_creatives_async_response_input_required.py
index cf2f56367..6b21abd7a 100644
--- a/src/adcp/types/generated_poc/creative/sync_creatives_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/creative/sync_creatives_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/sync_creatives_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -24,8 +24,8 @@ class SyncCreativesInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     reason: Annotated[
         Reason | None, Field(description='Reason code indicating why buyer input is needed')
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/sync_creatives_async_response_working.py b/src/adcp/types/generated_poc/creative/sync_creatives_async_response_working.py
index d80e73878..d53cba9b6 100644
--- a/src/adcp/types/generated_poc/creative/sync_creatives_async_response_working.py
+++ b/src/adcp/types/generated_poc/creative/sync_creatives_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  creative/sync_creatives_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,21 +17,21 @@ class SyncCreativesWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    creatives_processed: Annotated[
-        int | None, Field(description='Number of creatives processed so far', ge=0)
-    ] = None
-    creatives_total: Annotated[
-        int | None, Field(description='Total number of creatives to process', ge=0)
+    percentage: Annotated[
+        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
     ] = None
     current_step: Annotated[
         str | None, Field(description='Current step or phase of the operation')
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    percentage: Annotated[
-        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
-    ] = None
-    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
     total_steps: Annotated[
         int | None, Field(description='Total number of steps in the operation', ge=1)
     ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    creatives_processed: Annotated[
+        int | None, Field(description='Number of creatives processed so far', ge=0)
+    ] = None
+    creatives_total: Annotated[
+        int | None, Field(description='Total number of creatives to process', ge=0)
+    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/creative/sync_creatives_response.py b/src/adcp/types/generated_poc/creative/sync_creatives_response.py
index 5fc81d338..632abd1d4 100644
--- a/src/adcp/types/generated_poc/creative/sync_creatives_response.py
+++ b/src/adcp/types/generated_poc/creative/sync_creatives_response.py
@@ -1,13 +1,13 @@
 # generated by datamodel-codegen:
 #   filename:  creative/sync_creatives_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
 from typing import Annotated
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, StringConstraints
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
 from ..core import account as account_1
 from ..core import context as context_1
@@ -48,7 +48,7 @@ class Creative(AdCPBaseModel):
         ),
     ] = None
     assignment_errors: Annotated[
-        dict[Annotated[str, StringConstraints(pattern=r'^[a-zA-Z0-9_-]+$')], str] | None,
+        dict[str, str] | None,
         Field(
             description='Assignment errors by package ID (only present when assignment failures occurred)'
         ),
diff --git a/src/adcp/types/generated_poc/enums/content_rating_system.py b/src/adcp/types/generated_poc/enums/content_rating_system.py
index eacfa9a69..7f2eecf1b 100644
--- a/src/adcp/types/generated_poc/enums/content_rating_system.py
+++ b/src/adcp/types/generated_poc/enums/content_rating_system.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  enums/content_rating_system.json
-#   timestamp: 2026-03-16T00:33:16+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -15,4 +15,7 @@ class ContentRatingSystem(Enum):
     bbfc = 'bbfc'
     fsk = 'fsk'
     acb = 'acb'
+    chvrs = 'chvrs'
+    csa = 'csa'
+    pegi = 'pegi'
     custom = 'custom'
diff --git a/src/adcp/types/generated_poc/enums/genre_taxonomy.py b/src/adcp/types/generated_poc/enums/genre_taxonomy.py
new file mode 100644
index 000000000..d74cae97b
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/genre_taxonomy.py
@@ -0,0 +1,19 @@
+# generated by datamodel-codegen:
+#   filename:  enums/genre_taxonomy.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class GenreTaxonomy(Enum):
+    iab_content_3_0 = 'iab_content_3.0'
+    iab_content_2_2 = 'iab_content_2.2'
+    gracenote = 'gracenote'
+    eidr = 'eidr'
+    apple_genres = 'apple_genres'
+    google_genres = 'google_genres'
+    roku = 'roku'
+    amazon_genres = 'amazon_genres'
+    custom = 'custom'
diff --git a/src/adcp/types/generated_poc/enums/makegood_remedy.py b/src/adcp/types/generated_poc/enums/makegood_remedy.py
new file mode 100644
index 000000000..4489d3eb8
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/makegood_remedy.py
@@ -0,0 +1,13 @@
+# generated by datamodel-codegen:
+#   filename:  enums/makegood_remedy.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class MakegoodRemedy(Enum):
+    additional_delivery = 'additional_delivery'
+    credit = 'credit'
+    invoice_adjustment = 'invoice_adjustment'
diff --git a/src/adcp/types/generated_poc/enums/performance_standard_metric.py b/src/adcp/types/generated_poc/enums/performance_standard_metric.py
new file mode 100644
index 000000000..a89e2e6a3
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/performance_standard_metric.py
@@ -0,0 +1,15 @@
+# generated by datamodel-codegen:
+#   filename:  enums/performance_standard_metric.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class PerformanceStandardMetric(Enum):
+    viewability = 'viewability'
+    ivt = 'ivt'
+    completion_rate = 'completion_rate'
+    brand_safety = 'brand_safety'
+    attention_score = 'attention_score'
diff --git a/src/adcp/types/generated_poc/enums/viewability_standard.py b/src/adcp/types/generated_poc/enums/viewability_standard.py
new file mode 100644
index 000000000..c33fa93eb
--- /dev/null
+++ b/src/adcp/types/generated_poc/enums/viewability_standard.py
@@ -0,0 +1,12 @@
+# generated by datamodel-codegen:
+#   filename:  enums/viewability_standard.json
+#   timestamp: 2026-04-16T02:55:59+00:00
+
+from __future__ import annotations
+
+from enum import Enum
+
+
+class ViewabilityStandard(Enum):
+    mrc = 'mrc'
+    groupm = 'groupm'
diff --git a/src/adcp/types/generated_poc/extensions/extension_meta.py b/src/adcp/types/generated_poc/extensions/extension_meta.py
index 29c294f9d..47a2185df 100644
--- a/src/adcp/types/generated_poc/extensions/extension_meta.py
+++ b/src/adcp/types/generated_poc/extensions/extension_meta.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  extensions/extension_meta.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -11,14 +11,6 @@
 
 
 class AdcpExtensionFileSchema(AdCPBaseModel):
-    field_id: Annotated[
-        str,
-        Field(
-            alias='$id',
-            description='Extension ID following pattern /schemas/extensions/{namespace}.json',
-            pattern='^/schemas/extensions/[a-z][a-z0-9_]*\\.json$',
-        ),
-    ]
     field_schema: Annotated[
         Literal['http://json-schema.org/draft-07/schema#'], Field(alias='$schema')
     ]
diff --git a/src/adcp/types/generated_poc/governance/check_governance_request.py b/src/adcp/types/generated_poc/governance/check_governance_request.py
index 57c7d4fff..f34094364 100644
--- a/src/adcp/types/generated_poc/governance/check_governance_request.py
+++ b/src/adcp/types/generated_poc/governance/check_governance_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/check_governance_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -8,7 +8,7 @@
 from typing import Annotated, Any
 
 from adcp.types.base import AdCPBaseModel
-from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field, StringConstraints
+from pydantic import AnyUrl, AwareDatetime, ConfigDict, Field
 
 from ..core import business_entity
 from ..core import planned_delivery as planned_delivery_1
@@ -38,13 +38,13 @@ class AudienceDistribution(AdCPBaseModel):
         ),
     ] = None
     cumulative_indices: Annotated[
-        dict[Annotated[str, StringConstraints(pattern=r'^[a-z_]+:.+$')], float] | None,
+        dict[str, float] | None,
         Field(
             description='Cumulative audience index values since the media buy started. Same key format as indices (dimension:value). Use for detecting sustained bias drift that may not appear in a single reporting period.'
         ),
     ] = None
     indices: Annotated[
-        dict[Annotated[str, StringConstraints(pattern=r'^[a-z_]+:.+$')], float],
+        dict[str, float],
         Field(
             description="Audience index values for the current reporting period. Keys are seller-defined dimension:value strings (e.g., 'age:25-34', 'gender:female', 'income:high'). The protocol does not mandate a taxonomy — dimensions and value labels vary by seller. Values are index relative to the declared baseline (1.0 = at parity, >1.0 = over-indexed, <1.0 = under-indexed)."
         ),
diff --git a/src/adcp/types/generated_poc/governance/sync_plans_request.py b/src/adcp/types/generated_poc/governance/sync_plans_request.py
index 2c29a48ff..8753b9e84 100644
--- a/src/adcp/types/generated_poc/governance/sync_plans_request.py
+++ b/src/adcp/types/generated_poc/governance/sync_plans_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  governance/sync_plans_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -110,8 +110,7 @@ class Flight(AdCPBaseModel):
     start: Annotated[AwareDatetime, Field(description='Flight start (ISO 8601).')]
 
 
-class TotalBudgetCap(BudgetLimit):
-    pass
+TotalBudgetCap = BudgetLimit
 
 
 class Portfolio(AdCPBaseModel):
diff --git a/src/adcp/types/generated_poc/media_buy/build_creative_async_response_input_required.py b/src/adcp/types/generated_poc/media_buy/build_creative_async_response_input_required.py
index 9d8dd6ff0..8ef165a24 100644
--- a/src/adcp/types/generated_poc/media_buy/build_creative_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/media_buy/build_creative_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/build_creative_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -25,14 +25,14 @@ class BuildCreativeInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    reason: Annotated[
+        Reason | None, Field(description='Reason code indicating why input is needed')
+    ] = None
     errors: Annotated[
         list[error.Error] | None,
         Field(
             description='Optional validation errors or warnings explaining why input is required.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    reason: Annotated[
-        Reason | None, Field(description='Reason code indicating why input is needed')
-    ] = None
diff --git a/src/adcp/types/generated_poc/media_buy/build_creative_async_response_working.py b/src/adcp/types/generated_poc/media_buy/build_creative_async_response_working.py
index d69f056a8..07c649c51 100644
--- a/src/adcp/types/generated_poc/media_buy/build_creative_async_response_working.py
+++ b/src/adcp/types/generated_poc/media_buy/build_creative_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/build_creative_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,18 +17,18 @@ class BuildCreativeWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    percentage: Annotated[
+        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
+    ] = None
     current_step: Annotated[
         str | None,
         Field(
             description="Current step or phase of the operation (e.g., 'generating_assets', 'resolving_macros', 'rendering_preview')"
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    percentage: Annotated[
-        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
-    ] = None
-    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
     total_steps: Annotated[
         int | None, Field(description='Total number of steps in the operation', ge=1)
     ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_input_required.py b/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_input_required.py
index 04b62ff97..2562d919e 100644
--- a/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/create_media_buy_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -24,14 +24,14 @@ class CreateMediaBuyInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    reason: Annotated[
+        Reason | None, Field(description='Reason code indicating why input is needed')
+    ] = None
     errors: Annotated[
         list[error.Error] | None,
         Field(
             description='Optional validation errors or warnings for debugging purposes. Helps explain why input is required.'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
-    reason: Annotated[
-        Reason | None, Field(description='Reason code indicating why input is needed')
-    ] = None
diff --git a/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_working.py b/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_working.py
index 779b3efa6..ad9daa3f5 100644
--- a/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_working.py
+++ b/src/adcp/types/generated_poc/media_buy/create_media_buy_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/create_media_buy_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,15 +17,15 @@ class CreateMediaBuyWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    current_step: Annotated[
-        str | None, Field(description='Current step or phase of the operation')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     percentage: Annotated[
         float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
     ] = None
-    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    current_step: Annotated[
+        str | None, Field(description='Current step or phase of the operation')
+    ] = None
     total_steps: Annotated[
         int | None, Field(description='Total number of steps in the operation', ge=1)
     ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
index 68baaa533..c083a0d7f 100644
--- a/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
+++ b/src/adcp/types/generated_poc/media_buy/get_media_buy_delivery_request.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_media_buy_delivery_request.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -70,8 +70,7 @@ class DevicePlatform(AdCPBaseModel):
     ] = sort_metric.SortMetric.spend
 
 
-class DeviceType(DevicePlatform):
-    pass
+DeviceType = DevicePlatform
 
 
 class Geo(AdCPBaseModel):
@@ -103,8 +102,7 @@ class Geo(AdCPBaseModel):
     ] = None
 
 
-class Placement(Audience):
-    pass
+Placement = Audience
 
 
 class ReportingDimensions(AdCPBaseModel):
diff --git a/src/adcp/types/generated_poc/media_buy/get_products_async_response_input_required.py b/src/adcp/types/generated_poc/media_buy/get_products_async_response_input_required.py
index ea15d3fb8..6bcb622a2 100644
--- a/src/adcp/types/generated_poc/media_buy/get_products_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/media_buy/get_products_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_products_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -24,15 +24,15 @@ class GetProductsInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
+    reason: Annotated[
+        Reason | None, Field(description='Reason code indicating why input is needed')
+    ] = None
     partial_results: Annotated[
         list[product.Product] | None,
         Field(description='Partial product results that may help inform the clarification'),
     ] = None
-    reason: Annotated[
-        Reason | None, Field(description='Reason code indicating why input is needed')
-    ] = None
     suggestions: Annotated[
         list[str] | None, Field(description='Suggested values or options for the required input')
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_products_async_response_submitted.py b/src/adcp/types/generated_poc/media_buy/get_products_async_response_submitted.py
index 3056ea4a7..f743796e0 100644
--- a/src/adcp/types/generated_poc/media_buy/get_products_async_response_submitted.py
+++ b/src/adcp/types/generated_poc/media_buy/get_products_async_response_submitted.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_products_async_response_submitted.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,8 +17,8 @@ class GetProductsSubmitted(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
     estimated_completion: Annotated[
         AwareDatetime | None, Field(description='Estimated completion time for the search')
     ] = None
+    context: context_1.ContextObject | None = None
     ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/get_products_async_response_working.py b/src/adcp/types/generated_poc/media_buy/get_products_async_response_working.py
index 4f5b59ea1..19ca56904 100644
--- a/src/adcp/types/generated_poc/media_buy/get_products_async_response_working.py
+++ b/src/adcp/types/generated_poc/media_buy/get_products_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/get_products_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,19 +17,19 @@ class GetProductsWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
+    percentage: Annotated[
+        float | None,
+        Field(description='Progress percentage of the search operation', ge=0.0, le=100.0),
+    ] = None
     current_step: Annotated[
         str | None,
         Field(
             description="Current step in the search process (e.g., 'searching_inventory', 'validating_availability')"
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
-    percentage: Annotated[
-        float | None,
-        Field(description='Progress percentage of the search operation', ge=0.0, le=100.0),
-    ] = None
-    step_number: Annotated[int | None, Field(description='Current step number (1-indexed)')] = None
     total_steps: Annotated[
         int | None, Field(description='Total number of steps in the search process')
     ] = None
+    step_number: Annotated[int | None, Field(description='Current step number (1-indexed)')] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_input_required.py b/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_input_required.py
index 262ec0b3e..da9a4ea93 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_catalogs_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -25,11 +25,11 @@ class SyncCatalogsInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     reason: Annotated[
         Reason | None,
         Field(
             description='Reason code indicating why buyer input is needed. APPROVAL_REQUIRED: platform requires explicit approval before activating the catalog. FEED_VALIDATION: feed URL returned unexpected format or schema errors. ITEM_REVIEW: platform flagged items for manual review. FEED_ACCESS: platform cannot access the feed URL (authentication, CORS, etc.).'
         ),
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_working.py b/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_working.py
index 03696635d..4b1ad7dea 100644
--- a/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_working.py
+++ b/src/adcp/types/generated_poc/media_buy/sync_catalogs_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/sync_catalogs_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,20 +17,25 @@ class SyncCatalogsWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    catalogs_processed: Annotated[
-        int | None, Field(description='Number of catalogs processed so far', ge=0)
-    ] = None
-    catalogs_total: Annotated[
-        int | None, Field(description='Total number of catalogs to process', ge=0)
+    percentage: Annotated[
+        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
     ] = None
-    context: context_1.ContextObject | None = None
     current_step: Annotated[
         str | None,
         Field(
             description="Current step or phase of the operation (e.g., 'Fetching product feed', 'Validating items', 'Platform review')"
         ),
     ] = None
-    ext: ext_1.ExtensionObject | None = None
+    total_steps: Annotated[
+        int | None, Field(description='Total number of steps in the operation', ge=1)
+    ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    catalogs_processed: Annotated[
+        int | None, Field(description='Number of catalogs processed so far', ge=0)
+    ] = None
+    catalogs_total: Annotated[
+        int | None, Field(description='Total number of catalogs to process', ge=0)
+    ] = None
     items_processed: Annotated[
         int | None,
         Field(description='Total number of catalog items processed across all catalogs', ge=0),
@@ -39,10 +44,5 @@ class SyncCatalogsWorking(AdCPBaseModel):
         int | None,
         Field(description='Total number of catalog items to process across all catalogs', ge=0),
     ] = None
-    percentage: Annotated[
-        float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
-    ] = None
-    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
-    total_steps: Annotated[
-        int | None, Field(description='Total number of steps in the operation', ge=1)
-    ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_input_required.py b/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_input_required.py
index bdb72e3ba..8af00d0c1 100644
--- a/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_input_required.py
+++ b/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_input_required.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/update_media_buy_async_response_input_required.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -23,8 +23,8 @@ class UpdateMediaBuyInputRequired(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    ext: ext_1.ExtensionObject | None = None
     reason: Annotated[
         Reason | None, Field(description='Reason code indicating why input is needed')
     ] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_working.py b/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_working.py
index d7a707c91..fa9ac249d 100644
--- a/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_working.py
+++ b/src/adcp/types/generated_poc/media_buy/update_media_buy_async_response_working.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  media_buy/update_media_buy_async_response_working.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -17,15 +17,15 @@ class UpdateMediaBuyWorking(AdCPBaseModel):
     model_config = ConfigDict(
         extra='allow',
     )
-    context: context_1.ContextObject | None = None
-    current_step: Annotated[
-        str | None, Field(description='Current step or phase of the operation')
-    ] = None
-    ext: ext_1.ExtensionObject | None = None
     percentage: Annotated[
         float | None, Field(description='Completion percentage (0-100)', ge=0.0, le=100.0)
     ] = None
-    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    current_step: Annotated[
+        str | None, Field(description='Current step or phase of the operation')
+    ] = None
     total_steps: Annotated[
         int | None, Field(description='Total number of steps in the operation', ge=1)
     ] = None
+    step_number: Annotated[int | None, Field(description='Current step number', ge=1)] = None
+    context: context_1.ContextObject | None = None
+    ext: ext_1.ExtensionObject | None = None
diff --git a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
index a748cef8c..4da93c25d 100644
--- a/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
+++ b/src/adcp/types/generated_poc/sponsored_intelligence/si_send_message_response.py
@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  sponsored_intelligence/si_send_message_response.json
-#   timestamp: 2026-04-02T22:34:46+00:00
+#   timestamp: 2026-04-16T02:55:59+00:00
 
 from __future__ import annotations
 
@@ -83,10 +83,7 @@ class Response(AdCPBaseModel):
     ] = None
     ui_elements: Annotated[
         list[si_ui_element.SiUiElement] | None,
-        Field(
-            deprecated=True,
-            description='Visual components to render (DEPRECATED: use surface instead)',
-        ),
+        Field(description='Visual components to render (DEPRECATED: use surface instead)'),
     ] = None
 
 
diff --git a/src/adcp/types/guards.py b/src/adcp/types/guards.py
new file mode 100644
index 000000000..8a908ea10
--- /dev/null
+++ b/src/adcp/types/guards.py
@@ -0,0 +1,341 @@
+"""Type guards for ADCP discriminated union responses.
+
+ADCP 3.0 responses use atomic semantics: a response contains EITHER
+success data OR errors, never both. These type guards enable static
+type narrowing with mypy and runtime branch detection.
+
+Usage:
+    from adcp.types.guards import is_success, is_error
+
+    response = result.data  # CreateMediaBuyResponse (union type)
+
+    if is_success(response):
+        # mypy knows this is CreateMediaBuySuccessResponse
+        print(response.media_buy_id)
+    else:
+        # error branch
+        print(response.errors)
+
+Generic guards work with any ADCP response union:
+    from adcp.types.guards import is_adcp_error, is_adcp_success
+
+    if is_adcp_error(response):
+        print(response.errors)
+"""
+
+from __future__ import annotations
+
+from typing import Any, TypeGuard
+
+
+def is_adcp_error(response: Any) -> bool:
+    """Check if an ADCP response is an error response.
+
+    Works with any ADCP response union type. Error responses
+    have a non-empty ``errors`` field.
+
+    Args:
+        response: Any ADCP response object (success or error variant).
+
+    Returns:
+        True if the response contains errors.
+    """
+    errors = getattr(response, "errors", None)
+    if errors is None:
+        return False
+    if isinstance(errors, list):
+        return len(errors) > 0
+    return True
+
+
+def is_adcp_success(response: Any) -> bool:
+    """Check if an ADCP response is a success response.
+
+    Works with any ADCP response union type. Success responses
+    do not have an ``errors`` field (or it is None/empty).
+
+    Args:
+        response: Any ADCP response object (success or error variant).
+
+    Returns:
+        True if the response is a success (no errors).
+    """
+    return not is_adcp_error(response)
+
+
+# ============================================================================
+# Typed guards for specific response types
+# ============================================================================
+# These provide static type narrowing via typing.TypeGuard.
+# Import the specific guard for your response type to get mypy narrowing.
+
+# --- Media Buy ---
+
+from adcp.types.aliases import (  # noqa: E402
+    ActivateSignalErrorResponse,
+    ActivateSignalSuccessResponse,
+    BuildCreativeErrorResponse,
+    BuildCreativeSuccessResponse,
+    CalibrateContentErrorResponse,
+    CalibrateContentSuccessResponse,
+    CreateMediaBuyErrorResponse,
+    CreateMediaBuySuccessResponse,
+    GetAccountFinancialsErrorResponse,
+    GetAccountFinancialsSuccessResponse,
+    GetCreativeFeaturesErrorResponse,
+    GetCreativeFeaturesSuccessResponse,
+    LogEventErrorResponse,
+    LogEventSuccessResponse,
+    ProvidePerformanceFeedbackErrorResponse,
+    ProvidePerformanceFeedbackSuccessResponse,
+    SyncAccountsErrorResponse,
+    SyncAccountsSuccessResponse,
+    SyncCatalogsErrorResponse,
+    SyncCatalogsSuccessResponse,
+    SyncCreativesErrorResponse,
+    SyncCreativesSuccessResponse,
+    SyncEventSourcesErrorResponse,
+    SyncEventSourcesSuccessResponse,
+    UpdateMediaBuyErrorResponse,
+    UpdateMediaBuySuccessResponse,
+    ValidateContentDeliveryErrorResponse,
+    ValidateContentDeliverySuccessResponse,
+)
+
+# Type aliases for response unions
+CreateMediaBuyResponse = CreateMediaBuySuccessResponse | CreateMediaBuyErrorResponse
+UpdateMediaBuyResponse = UpdateMediaBuySuccessResponse | UpdateMediaBuyErrorResponse
+ActivateSignalResponse = ActivateSignalSuccessResponse | ActivateSignalErrorResponse
+BuildCreativeResponse = BuildCreativeSuccessResponse | BuildCreativeErrorResponse
+SyncCreativesResponse = SyncCreativesSuccessResponse | SyncCreativesErrorResponse
+SyncAccountsResponse = SyncAccountsSuccessResponse | SyncAccountsErrorResponse
+LogEventResponse = LogEventSuccessResponse | LogEventErrorResponse
+SyncCatalogsResponse = SyncCatalogsSuccessResponse | SyncCatalogsErrorResponse
+SyncEventSourcesResponse = SyncEventSourcesSuccessResponse | SyncEventSourcesErrorResponse
+
+
+# --- Create Media Buy ---
+
+def is_create_media_buy_success(
+    response: CreateMediaBuyResponse,
+) -> TypeGuard[CreateMediaBuySuccessResponse]:
+    """Check if a CreateMediaBuyResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_create_media_buy_error(
+    response: CreateMediaBuyResponse,
+) -> TypeGuard[CreateMediaBuyErrorResponse]:
+    """Check if a CreateMediaBuyResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Update Media Buy ---
+
+def is_update_media_buy_success(
+    response: UpdateMediaBuyResponse,
+) -> TypeGuard[UpdateMediaBuySuccessResponse]:
+    """Check if an UpdateMediaBuyResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_update_media_buy_error(
+    response: UpdateMediaBuyResponse,
+) -> TypeGuard[UpdateMediaBuyErrorResponse]:
+    """Check if an UpdateMediaBuyResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Activate Signal ---
+
+def is_activate_signal_success(
+    response: ActivateSignalResponse,
+) -> TypeGuard[ActivateSignalSuccessResponse]:
+    """Check if an ActivateSignalResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_activate_signal_error(
+    response: ActivateSignalResponse,
+) -> TypeGuard[ActivateSignalErrorResponse]:
+    """Check if an ActivateSignalResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Build Creative ---
+
+def is_build_creative_success(
+    response: BuildCreativeResponse,
+) -> TypeGuard[BuildCreativeSuccessResponse]:
+    """Check if a BuildCreativeResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_build_creative_error(
+    response: BuildCreativeResponse,
+) -> TypeGuard[BuildCreativeErrorResponse]:
+    """Check if a BuildCreativeResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Sync Creatives ---
+
+def is_sync_creatives_success(
+    response: SyncCreativesResponse,
+) -> TypeGuard[SyncCreativesSuccessResponse]:
+    """Check if a SyncCreativesResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_sync_creatives_error(
+    response: SyncCreativesResponse,
+) -> TypeGuard[SyncCreativesErrorResponse]:
+    """Check if a SyncCreativesResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Performance Feedback ---
+
+def is_performance_feedback_success(
+    response: ProvidePerformanceFeedbackSuccessResponse | ProvidePerformanceFeedbackErrorResponse,
+) -> TypeGuard[ProvidePerformanceFeedbackSuccessResponse]:
+    """Check if a ProvidePerformanceFeedbackResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_performance_feedback_error(
+    response: ProvidePerformanceFeedbackSuccessResponse | ProvidePerformanceFeedbackErrorResponse,
+) -> TypeGuard[ProvidePerformanceFeedbackErrorResponse]:
+    """Check if a ProvidePerformanceFeedbackResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Sync Accounts ---
+
+def is_sync_accounts_success(
+    response: SyncAccountsResponse,
+) -> TypeGuard[SyncAccountsSuccessResponse]:
+    """Check if a SyncAccountsResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_sync_accounts_error(
+    response: SyncAccountsResponse,
+) -> TypeGuard[SyncAccountsErrorResponse]:
+    """Check if a SyncAccountsResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Log Event ---
+
+def is_log_event_success(
+    response: LogEventResponse,
+) -> TypeGuard[LogEventSuccessResponse]:
+    """Check if a LogEventResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_log_event_error(
+    response: LogEventResponse,
+) -> TypeGuard[LogEventErrorResponse]:
+    """Check if a LogEventResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Sync Catalogs ---
+
+def is_sync_catalogs_success(
+    response: SyncCatalogsResponse,
+) -> TypeGuard[SyncCatalogsSuccessResponse]:
+    """Check if a SyncCatalogsResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_sync_catalogs_error(
+    response: SyncCatalogsResponse,
+) -> TypeGuard[SyncCatalogsErrorResponse]:
+    """Check if a SyncCatalogsResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Get Account Financials ---
+
+def is_get_account_financials_success(
+    response: GetAccountFinancialsSuccessResponse | GetAccountFinancialsErrorResponse,
+) -> TypeGuard[GetAccountFinancialsSuccessResponse]:
+    """Check if a GetAccountFinancialsResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_get_account_financials_error(
+    response: GetAccountFinancialsSuccessResponse | GetAccountFinancialsErrorResponse,
+) -> TypeGuard[GetAccountFinancialsErrorResponse]:
+    """Check if a GetAccountFinancialsResponse is an error."""
+    return is_adcp_error(response)
+
+
+# --- Content Standards ---
+
+def is_calibrate_content_success(
+    response: CalibrateContentSuccessResponse | CalibrateContentErrorResponse,
+) -> TypeGuard[CalibrateContentSuccessResponse]:
+    """Check if a CalibrateContentResponse is a success."""
+    return not is_adcp_error(response)
+
+
+def is_validate_content_delivery_success(
+    response: ValidateContentDeliverySuccessResponse | ValidateContentDeliveryErrorResponse,
+) -> TypeGuard[ValidateContentDeliverySuccessResponse]:
+    """Check if a ValidateContentDeliveryResponse is a success."""
+    return not is_adcp_error(response)
+
+
+# --- Creative Features ---
+
+def is_get_creative_features_success(
+    response: GetCreativeFeaturesSuccessResponse | GetCreativeFeaturesErrorResponse,
+) -> TypeGuard[GetCreativeFeaturesSuccessResponse]:
+    """Check if a GetCreativeFeaturesResponse is a success."""
+    return not is_adcp_error(response)
+
+
+# ============================================================================
+# EXPORTS
+# ============================================================================
+
+__all__ = [
+    # Generic guards
+    "is_adcp_error",
+    "is_adcp_success",
+    # Media buy guards
+    "is_create_media_buy_success",
+    "is_create_media_buy_error",
+    "is_update_media_buy_success",
+    "is_update_media_buy_error",
+    # Signal guards
+    "is_activate_signal_success",
+    "is_activate_signal_error",
+    # Creative guards
+    "is_build_creative_success",
+    "is_build_creative_error",
+    "is_sync_creatives_success",
+    "is_sync_creatives_error",
+    # Feedback guards
+    "is_performance_feedback_success",
+    "is_performance_feedback_error",
+    # Account guards
+    "is_sync_accounts_success",
+    "is_sync_accounts_error",
+    "is_get_account_financials_success",
+    "is_get_account_financials_error",
+    # Event guards
+    "is_log_event_success",
+    "is_log_event_error",
+    # Catalog guards
+    "is_sync_catalogs_success",
+    "is_sync_catalogs_error",
+    # Content standards guards
+    "is_calibrate_content_success",
+    "is_validate_content_delivery_success",
+    "is_get_creative_features_success",
+]
diff --git a/tests/test_capabilities.py b/tests/test_capabilities.py
index 883bb250b..a6292a749 100644
--- a/tests/test_capabilities.py
+++ b/tests/test_capabilities.py
@@ -754,3 +754,88 @@ class MyHandler(ADCPHandler):
         method_names = {w.split("'")[3] for w in warnings}
         assert "log_event" in method_names
         assert "sync_event_sources" in method_names
+
+
+class TestTaskFeatureMapCompleteness:
+    """Verify TASK_FEATURE_MAP covers all expected domains."""
+
+    def test_all_expected_domains_present(self) -> None:
+        from adcp.capabilities import TASK_FEATURE_MAP
+
+        domains = set(TASK_FEATURE_MAP.values())
+        expected = {
+            "conversion_tracking",
+            "audience_targeting",
+            "catalog_management",
+            "content_standards",
+            "signals",
+            "creative_agent",
+            "campaign_governance",
+            "property_lists",
+            "collection_lists",
+            "trusted_match",
+            "sponsored_intelligence",
+            "brand",
+        }
+        assert expected <= domains, f"Missing domains: {expected - domains}"
+
+    def test_all_values_are_strings(self) -> None:
+        from adcp.capabilities import TASK_FEATURE_MAP
+
+        for task, feature in TASK_FEATURE_MAP.items():
+            assert isinstance(task, str), f"Task key {task} is not a string"
+            assert isinstance(feature, str), f"Feature {feature} is not a string"
+
+
+class TestBuildSyntheticCapabilities:
+    """Tests for build_synthetic_capabilities()."""
+
+    def test_default_major_versions(self) -> None:
+        from adcp.capabilities import build_synthetic_capabilities
+
+        result = build_synthetic_capabilities(["media_buy"])
+        assert result["adcp"]["major_versions"] == [2]
+        assert result["supported_protocols"] == ["media_buy"]
+
+    def test_custom_major_versions(self) -> None:
+        from adcp.capabilities import build_synthetic_capabilities
+
+        result = build_synthetic_capabilities(
+            ["media_buy", "signals"],
+            major_versions=[2, 3],
+        )
+        assert result["adcp"]["major_versions"] == [2, 3]
+        assert result["supported_protocols"] == ["media_buy", "signals"]
+
+    def test_importable_from_top_level(self) -> None:
+        from adcp import build_synthetic_capabilities
+
+        assert callable(build_synthetic_capabilities)
+
+
+class TestSupportsV3:
+    """Tests for FeatureResolver.supports_v3()."""
+
+    def test_v3_supported(self) -> None:
+        caps = GetAdcpCapabilitiesResponse(
+            adcp=AdcpInfo(major_versions=[MajorVersion(3)]),
+            supported_protocols=[SupportedProtocol("media_buy")],
+        )
+        resolver = FeatureResolver(caps)
+        assert resolver.supports_v3() is True
+
+    def test_v2_only(self) -> None:
+        caps = GetAdcpCapabilitiesResponse(
+            adcp=AdcpInfo(major_versions=[MajorVersion(2)]),
+            supported_protocols=[SupportedProtocol("media_buy")],
+        )
+        resolver = FeatureResolver(caps)
+        assert resolver.supports_v3() is False
+
+    def test_both_v2_and_v3(self) -> None:
+        caps = GetAdcpCapabilitiesResponse(
+            adcp=AdcpInfo(major_versions=[MajorVersion(2), MajorVersion(3)]),
+            supported_protocols=[SupportedProtocol("media_buy")],
+        )
+        resolver = FeatureResolver(caps)
+        assert resolver.supports_v3() is True
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
new file mode 100644
index 000000000..148489f9b
--- /dev/null
+++ b/tests/test_exceptions.py
@@ -0,0 +1,112 @@
+"""Tests for ADCP exception hierarchy."""
+
+from __future__ import annotations
+
+from adcp.exceptions import (
+    ADCPAuthenticationError,
+    ADCPConnectionError,
+    ADCPError,
+    ADCPSimpleAPIError,
+    ADCPTaskError,
+    ADCPTimeoutError,
+)
+
+
+class TestIsRetryable:
+    """Tests for is_retryable property."""
+
+    def test_base_error_not_retryable(self) -> None:
+        assert ADCPError("fail").is_retryable is False
+
+    def test_connection_error_retryable(self) -> None:
+        assert ADCPConnectionError("fail").is_retryable is True
+
+    def test_timeout_error_retryable(self) -> None:
+        assert ADCPTimeoutError("fail").is_retryable is True
+
+    def test_auth_error_not_retryable(self) -> None:
+        assert ADCPAuthenticationError("fail").is_retryable is False
+
+
+class TestADCPTaskError:
+    """Tests for ADCPTaskError."""
+
+    def test_basic_task_error(self) -> None:
+        class FakeError:
+            code = "INVALID_BUDGET"
+            message = "Budget too low"
+
+        err = ADCPTaskError("create_media_buy", [FakeError()])
+        assert err.operation == "create_media_buy"
+        assert len(err.errors) == 1
+        assert err.error_codes == ["INVALID_BUDGET"]
+        assert "Budget too low" in str(err)
+
+    def test_multiple_errors(self) -> None:
+        class Err1:
+            code = "INVALID_BUDGET"
+            message = "Budget too low"
+
+        class Err2:
+            code = "MISSING_CREATIVE"
+            message = "No creatives"
+
+        err = ADCPTaskError("create_media_buy", [Err1(), Err2()])
+        assert err.error_codes == ["INVALID_BUDGET", "MISSING_CREATIVE"]
+        assert "+1 more" in str(err)
+
+    def test_empty_errors(self) -> None:
+        err = ADCPTaskError("get_products", [])
+        assert err.error_codes == []
+        assert "get_products failed" in str(err)
+
+    def test_errors_without_code(self) -> None:
+        class NoCode:
+            message = "something went wrong"
+
+        err = ADCPTaskError("get_products", [NoCode()])
+        assert err.error_codes == []
+
+    def test_importable_from_top_level(self) -> None:
+        from adcp import ADCPTaskError
+
+        assert ADCPTaskError is not None
+
+    def test_retryable_with_transient_code(self) -> None:
+        class RateLimited:
+            code = "RATE_LIMITED"
+            message = "Too many requests"
+
+        err = ADCPTaskError("get_products", [RateLimited()])
+        assert err.is_retryable is True
+
+    def test_not_retryable_with_terminal_code(self) -> None:
+        class NotFound:
+            code = "ACCOUNT_NOT_FOUND"
+            message = "Not found"
+
+        err = ADCPTaskError("get_products", [NotFound()])
+        assert err.is_retryable is False
+
+
+class TestADCPSimpleAPIError:
+    """Tests for ADCPSimpleAPIError preserving errors."""
+
+    def test_preserves_errors(self) -> None:
+        errors = [{"code": "ERR1", "message": "fail"}]
+        err = ADCPSimpleAPIError("get_products", "fail", errors=errors)
+        assert err.errors == errors
+        assert err.operation == "get_products"
+
+    def test_defaults_to_empty_errors(self) -> None:
+        err = ADCPSimpleAPIError("get_products", "fail")
+        assert err.errors == []
+
+
+class TestSuggestionFormat:
+    """Test that suggestions use plain text, not emoji."""
+
+    def test_no_emoji_in_suggestion(self) -> None:
+        err = ADCPError("fail", suggestion="try this")
+        assert "\U0001f4a1" not in str(err)  # no lightbulb emoji
+        assert "Suggestion:" in str(err)
diff --git a/tests/test_rootmodel_proxy.py b/tests/test_rootmodel_proxy.py
index 47787a43f..e6ce97fc4 100644
--- a/tests/test_rootmodel_proxy.py
+++ b/tests/test_rootmodel_proxy.py
@@ -19,6 +19,7 @@
     PlatformDeployment,
     Product,
     PublisherPropertiesAll,
+    ReportingCapabilities,
 )
 
 
@@ -37,6 +38,14 @@ def product_with_pricing() -> Product:
         format_ids=[FormatId(agent_url="http://localhost", id="display_300x250")],
         delivery_type=DeliveryType.guaranteed,
         delivery_measurement=DeliveryMeasurement(provider="Test"),
+        reporting_capabilities=ReportingCapabilities(
+            available_metrics=[],
+            available_reporting_frequencies=["daily"],
+            date_range_support="date_range",
+            expected_delay_minutes=60,
+            supports_webhooks=False,
+            timezone="UTC",
+        ),
         pricing_options=[
             FlatRatePricingOption(
                 pricing_option_id="flat_1",
diff --git a/tests/test_server_builder.py b/tests/test_server_builder.py
new file mode 100644
index 000000000..2834b1a91
--- /dev/null
+++ b/tests/test_server_builder.py
@@ -0,0 +1,134 @@
+"""Tests for the decorator-based server builder."""
+
+from __future__ import annotations
+
+import pytest
+
+from adcp.server.builder import ADCPServerBuilder, adcp_server
+from adcp.server.responses import capabilities_response, products_response
+
+
+class TestADCPServerBuilder:
+    """Tests for the builder pattern."""
+
+    def test_basic_decorator_registration(self) -> None:
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def get_products(params, context=None):
+            return products_response([])
+
+        assert "get_products" in server._handlers
+
+    def test_multiple_handlers(self) -> None:
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def get_products(params, context=None):
+            return products_response([])
+
+        @server.create_media_buy
+        async def create_media_buy(params, context=None):
+            return {}
+
+        assert len(server._handlers) == 2
+
+    def test_build_handler(self) -> None:
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def get_products(params, context=None):
+            return products_response([{"product_id": "p1", "name": "Test"}])
+
+        @server.get_adcp_capabilities
+        async def caps(params, context=None):
+            return capabilities_response(["media_buy"])
+
+        handler = server.build_handler()
+        assert hasattr(handler, "get_products")
+        assert hasattr(handler, "get_adcp_capabilities")
+
+    @pytest.mark.asyncio
+    async def test_handler_calls_registered_function(self) -> None:
+        server = adcp_server("test-seller")
+        called = False
+
+        @server.get_products
+        async def get_products(params, context=None):
+            nonlocal called
+            called = True
+            return products_response([])
+
+        handler = server.build_handler()
+        await handler.get_products({})
+        assert called is True
+
+    def test_detect_domains(self) -> None:
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def gp(params, context=None):
+            return {}
+
+        @server.get_signals
+        async def gs(params, context=None):
+            return {}
+
+        domains = server._detect_domains()
+        assert "media_buy" in domains
+        assert "signals" in domains
+
+    @pytest.mark.asyncio
+    async def test_auto_capabilities(self) -> None:
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def gp(params, context=None):
+            return products_response([])
+
+        handler = server.build_handler()
+        # Auto-generated capabilities should include media_buy
+        result = await handler.get_adcp_capabilities({})
+        assert "supported_protocols" in result
+        assert "media_buy" in result["supported_protocols"]
+
+    def test_factory_function(self) -> None:
+        server = adcp_server("my-seller", version="2.0.0")
+        assert isinstance(server, ADCPServerBuilder)
+        assert server.name == "my-seller"
+        assert server.version == "2.0.0"
+
+    def test_private_attr_raises(self) -> None:
+        server = adcp_server("test")
+        with pytest.raises(AttributeError):
+            server._private_thing
+
+    def test_importable_from_server_package(self) -> None:
+        from adcp.server import ADCPServerBuilder, adcp_server
+
+        assert callable(adcp_server)
+        assert ADCPServerBuilder is not None
+
+    def test_serve_accepts_builder(self) -> None:
+        """serve() should accept ADCPServerBuilder and auto-convert."""
+        from adcp.server.serve import serve as serve_fn
+        from adcp.server.builder import ADCPServerBuilder
+
+        server = adcp_server("test-seller")
+
+        @server.get_products
+        async def gp(params, context=None):
+            return products_response([])
+
+        # Verify build_handler works (serve() would call this internally)
+        handler = server.build_handler()
+        assert hasattr(handler, "get_products")
+
+    def test_typo_raises(self) -> None:
+        """Unknown task names should raise ValueError."""
+        server = adcp_server("test")
+        with pytest.raises(ValueError, match="not a known ADCP task"):
+
+            @server.get_product  # typo - missing 's'
+            async def handler(params, context=None):
+                return {}
diff --git a/tests/test_server_helpers.py b/tests/test_server_helpers.py
new file mode 100644
index 000000000..ace449d91
--- /dev/null
+++ b/tests/test_server_helpers.py
@@ -0,0 +1,260 @@
+"""Tests for ADCP server DX helpers."""
+
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+
+from adcp.server.helpers import (
+    STANDARD_ERROR_CODES,
+    adcp_error,
+    cancel_media_buy_response,
+    inject_context,
+    is_terminal_status,
+    resolve_account,
+    valid_actions_for_status,
+)
+
+
+class TestAdcpError:
+    """Tests for adcp_error() structured error builder."""
+
+    def test_standard_code_auto_recovery(self) -> None:
+        result = adcp_error("BUDGET_TOO_LOW", "Budget $50 is below $500")
+        assert result["errors"][0]["code"] == "BUDGET_TOO_LOW"
+        assert result["errors"][0]["recovery"] == "correctable"
+        assert "below" in result["errors"][0]["message"]
+
+    def test_standard_code_default_message(self) -> None:
+        result = adcp_error("RATE_LIMITED")
+        assert result["errors"][0]["message"] == "Too many requests"
+        assert result["errors"][0]["recovery"] == "transient"
+
+    def test_custom_code_defaults_terminal(self) -> None:
+        result = adcp_error("MY_CUSTOM_ERROR", "Something broke")
+        assert result["errors"][0]["recovery"] == "terminal"
+
+    def test_recovery_override(self) -> None:
+        result = adcp_error("BUDGET_TOO_LOW", recovery="transient")
+        assert result["errors"][0]["recovery"] == "transient"
+
+    def test_field_and_suggestion(self) -> None:
+        result = adcp_error(
+            "PRODUCT_NOT_FOUND",
+            field="product_id",
+            suggestion="Use get_products first",
+        )
+        err = result["errors"][0]
+        assert err["field"] == "product_id"
+        assert err["suggestion"] == "Use get_products first"
+
+    def test_retry_after(self) -> None:
+        result = adcp_error("RATE_LIMITED", retry_after=30)
+        assert result["errors"][0]["retry_after"] == 30
+
+    def test_details(self) -> None:
+        result = adcp_error("BUDGET_TOO_LOW", details={"minimum": 500, "actual": 50})
+        assert result["errors"][0]["details"]["minimum"] == 500
+
+    def test_all_standard_codes_have_recovery(self) -> None:
+        for code, info in STANDARD_ERROR_CODES.items():
+            assert "recovery" in info, f"{code} missing recovery"
+            assert info["recovery"] in ("transient", "correctable", "terminal")
+
+    def test_importable_from_server_package(self) -> None:
+        from adcp.server import adcp_error as imported
+
+        assert callable(imported)
+
+
+class TestValidActionsForStatus:
+    """Tests for media buy state machine."""
+
+    def test_active_has_pause_and_cancel(self) -> None:
+        actions = valid_actions_for_status("active")
+        assert "pause" in actions
+        assert "cancel" in actions
+
+    def test_paused_has_resume(self) -> None:
+        actions = valid_actions_for_status("paused")
+        assert "resume" in actions
+
+    def test_terminal_statuses_empty(self) -> None:
+        for status in ("completed", "rejected", "canceled"):
+            assert valid_actions_for_status(status) == []
+
+    def test_pending_activation_allows_cancel(self) -> None:
+        actions = valid_actions_for_status("pending_activation")
+        assert "cancel" in actions
+        assert "update_packages" in actions
+
+    def test_unknown_status_empty(self) -> None:
+        assert valid_actions_for_status("nonexistent") == []
+
+
+class TestIsTerminalStatus:
+    def test_terminal(self) -> None:
+        assert is_terminal_status("completed") is True
+        assert is_terminal_status("rejected") is True
+        assert is_terminal_status("canceled") is True
+
+    def test_non_terminal(self) -> None:
+        assert is_terminal_status("active") is False
+        assert is_terminal_status("paused") is False
+
+
+class TestResolveAccount:
+    @pytest.mark.asyncio
+    async def test_no_resolver(self) -> None:
+        account, error = await resolve_account({"account": {"account_id": "a1"}}, None)
+        assert account is None
+        assert error is None
+
+    @pytest.mark.asyncio
+    async def test_no_account_field(self) -> None:
+        async def resolver(ref: dict) -> dict:
+            return {"id": "resolved"}
+
+        account, error = await resolve_account({"brief": "test"}, resolver)
+        assert account is None
+        assert error is None
+
+    @pytest.mark.asyncio
+    async def test_successful_resolution(self) -> None:
+        async def resolver(ref: dict) -> dict:
+            return {"id": ref["account_id"], "name": "Acme"}
+
+        account, error = await resolve_account(
+            {"account": {"account_id": "a1"}}, resolver
+        )
+        assert account == {"id": "a1", "name": "Acme"}
+        assert error is None
+
+    @pytest.mark.asyncio
+    async def test_not_found(self) -> None:
+        async def resolver(ref: dict) -> None:
+            return None
+
+        account, error = await resolve_account(
+            {"account": {"account_id": "bad"}}, resolver
+        )
+        assert account is None
+        assert error is not None
+        assert error["errors"][0]["code"] == "ACCOUNT_NOT_FOUND"
+
+    @pytest.mark.asyncio
+    async def test_suspended_via_account_error(self) -> None:
+        from adcp.server.helpers import AccountError
+
+        async def resolver(ref: dict) -> None:
+            raise AccountError("ACCOUNT_SUSPENDED", "Account is suspended")
+
+        account, error = await resolve_account(
+            {"account": {"account_id": "a1"}}, resolver
+        )
+        assert account is None
+        assert error is not None
+        assert error["errors"][0]["code"] == "ACCOUNT_SUSPENDED"
+
+    @pytest.mark.asyncio
+    async def test_payment_required_with_suggestion(self) -> None:
+        from adcp.server.helpers import AccountError
+
+        async def resolver(ref: dict) -> None:
+            raise AccountError(
+                "ACCOUNT_PAYMENT_REQUIRED",
+                suggestion="Update payment at https://billing.example.com",
+            )
+
+        account, error = await resolve_account(
+            {"account": {"account_id": "a1"}}, resolver
+        )
+        assert error["errors"][0]["code"] == "ACCOUNT_PAYMENT_REQUIRED"
+        assert "billing" in error["errors"][0]["suggestion"]
+
+
+class TestInjectContext:
+    def test_injects_context(self) -> None:
+        params = {"brief": "test", "context": {"correlation_id": "abc"}}
+        response: dict[str, Any] = {"products": []}
+        inject_context(params, response)
+        assert response["context"] == {"correlation_id": "abc"}
+
+    def test_no_context_no_injection(self) -> None:
+        params = {"brief": "test"}
+        response: dict[str, Any] = {"products": []}
+        inject_context(params, response)
+        assert "context" not in response
+
+    def test_does_not_overwrite_existing(self) -> None:
+        params = {"context": {"new": True}}
+        response: dict[str, Any] = {"context": {"existing": True}}
+        inject_context(params, response)
+        assert response["context"] == {"existing": True}
+
+
+class TestCancelMediaBuyResponse:
+    def test_basic_cancellation(self) -> None:
+        resp = cancel_media_buy_response("mb_123", "buyer")
+        assert resp["media_buy_id"] == "mb_123"
+        assert resp["status"] == "canceled"
+        assert resp["canceled_by"] == "buyer"
+        assert resp["valid_actions"] == []
+        assert "canceled_at" in resp
+
+    def test_with_reason(self) -> None:
+        resp = cancel_media_buy_response("mb_123", "seller", reason="Policy violation")
+        assert resp["reason"] == "Policy violation"
+
+    def test_auto_timestamp(self) -> None:
+        resp = cancel_media_buy_response("mb_123", "buyer")
+        assert resp["canceled_at"].endswith("+00:00") or "Z" in resp["canceled_at"]
+
+    def test_custom_timestamp(self) -> None:
+        resp = cancel_media_buy_response(
+            "mb_123", "buyer", canceled_at="2026-01-01T00:00:00Z"
+        )
+        assert resp["canceled_at"] == "2026-01-01T00:00:00Z"
+
+    def test_invalid_canceled_by_raises(self) -> None:
+        with pytest.raises(ValueError, match="canceled_by must be"):
+            cancel_media_buy_response("mb_123", "system")
+
+
+class TestMediaBuyResponseAutoActions:
+    """Test that response builders auto-populate valid_actions."""
+
+    def test_media_buy_response_auto_actions(self) -> None:
+        from adcp.server.responses import media_buy_response
+
+        resp = media_buy_response("mb_1", [], status="active")
+        assert "valid_actions" in resp
+        assert "pause" in resp["valid_actions"]
+        assert "cancel" in resp["valid_actions"]
+
+    def test_media_buy_response_terminal_empty_actions(self) -> None:
+        from adcp.server.responses import media_buy_response
+
+        resp = media_buy_response("mb_1", [], status="completed")
+        assert resp["valid_actions"] == []
+
+    def test_media_buy_response_auto_revision(self) -> None:
+        from adcp.server.responses import media_buy_response
+
+        resp = media_buy_response("mb_1", [])
+        assert resp["revision"] == 1
+
+    def test_update_response_auto_actions(self) -> None:
+        from adcp.server.responses import update_media_buy_response
+
+        resp = update_media_buy_response("mb_1", status="paused")
+        assert "resume" in resp["valid_actions"]
+
+    def test_explicit_actions_override(self) -> None:
+        from adcp.server.responses import media_buy_response
+
+        resp = media_buy_response(
+            "mb_1", [], status="active", valid_actions=["cancel"]
+        )
+        assert resp["valid_actions"] == ["cancel"]
diff --git a/tests/test_spec_coverage.py b/tests/test_spec_coverage.py
index 2d89c4484..cb128ae34 100644
--- a/tests/test_spec_coverage.py
+++ b/tests/test_spec_coverage.py
@@ -88,6 +88,8 @@ def test_tool_filtering_by_handler_type():
         "report_plan_outcome", "get_plan_audit_logs",
         "create_property_list", "get_property_list", "list_property_lists",
         "update_property_list", "delete_property_list",
+        "create_collection_list", "get_collection_list", "list_collection_lists",
+        "update_collection_list", "delete_collection_list",
         "get_adcp_capabilities",
     }
 
diff --git a/tests/test_type_coercion.py b/tests/test_type_coercion.py
index 5df214df3..a682e9a61 100644
--- a/tests/test_type_coercion.py
+++ b/tests/test_type_coercion.py
@@ -518,6 +518,14 @@ class ExtendedProduct(Product):
             delivery_type=DeliveryType.guaranteed,
             delivery_measurement=DeliveryMeasurement(provider="Test Provider"),
             format_ids=[FormatId(agent_url="https://example.com", id="banner-300x250")],
+            reporting_capabilities={
+                "available_metrics": [],
+                "available_reporting_frequencies": ["daily"],
+                "date_range_support": "date_range",
+                "expected_delay_minutes": 60,
+                "supports_webhooks": False,
+                "timezone": "UTC",
+            },
             pricing_options=[
                 CpmPricingOption(
                     currency="USD",
diff --git a/tests/test_type_guards.py b/tests/test_type_guards.py
new file mode 100644
index 000000000..5558d56e3
--- /dev/null
+++ b/tests/test_type_guards.py
@@ -0,0 +1,128 @@
+"""Tests for ADCP type guards."""
+
+from __future__ import annotations
+
+from adcp.types.guards import (
+    is_adcp_error,
+    is_adcp_success,
+    is_create_media_buy_error,
+    is_create_media_buy_success,
+    is_update_media_buy_error,
+    is_update_media_buy_success,
+)
+
+
+class TestGenericGuards:
+    """Tests for is_adcp_error and is_adcp_success."""
+
+    def test_error_with_errors_list(self) -> None:
+        """Response with non-empty errors list is an error."""
+
+        class FakeError:
+            errors = [{"code": "INVALID_BUDGET", "message": "Budget too low"}]
+
+        assert is_adcp_error(FakeError()) is True
+        assert is_adcp_success(FakeError()) is False
+
+    def test_success_without_errors(self) -> None:
+        """Response without errors attribute is a success."""
+
+        class FakeSuccess:
+            media_buy_id = "mb_123"
+
+        assert is_adcp_error(FakeSuccess()) is False
+        assert is_adcp_success(FakeSuccess()) is True
+
+    def test_success_with_none_errors(self) -> None:
+        """Response with errors=None is a success."""
+
+        class FakeSuccess:
+            errors = None
+
+        assert is_adcp_error(FakeSuccess()) is False
+        assert is_adcp_success(FakeSuccess()) is True
+
+    def test_success_with_empty_errors(self) -> None:
+        """Response with empty errors list is a success."""
+
+        class FakeSuccess:
+            errors: list = []
+
+        assert is_adcp_error(FakeSuccess()) is False
+        assert is_adcp_success(FakeSuccess()) is True
+
+    def test_error_with_real_pydantic_model(self) -> None:
+        """Test with actual Pydantic models from the type system."""
+        from adcp.types.aliases import (
+            CreateMediaBuyErrorResponse,
+            CreateMediaBuySuccessResponse,
+        )
+
+        # Create an error response
+        error_resp = CreateMediaBuyErrorResponse.model_validate(
+            {"errors": [{"message": "Budget too low", "code": "INVALID_BUDGET"}]}
+        )
+        assert is_adcp_error(error_resp) is True
+        assert is_adcp_success(error_resp) is False
+
+        # Create a success response
+        success_resp = CreateMediaBuySuccessResponse.model_validate(
+            {"media_buy_id": "mb_123", "packages": []}
+        )
+        assert is_adcp_error(success_resp) is False
+        assert is_adcp_success(success_resp) is True
+
+
+class TestTypedGuards:
+    """Tests for typed TypeGuard functions."""
+
+    def test_create_media_buy_success_guard(self) -> None:
+        from adcp.types.aliases import CreateMediaBuySuccessResponse
+
+        resp = CreateMediaBuySuccessResponse.model_validate(
+            {"media_buy_id": "mb_123", "packages": []}
+        )
+        assert is_create_media_buy_success(resp) is True
+        assert is_create_media_buy_error(resp) is False
+
+    def test_create_media_buy_error_guard(self) -> None:
+        from adcp.types.aliases import CreateMediaBuyErrorResponse
+
+        resp = CreateMediaBuyErrorResponse.model_validate(
+            {"errors": [{"message": "fail", "code": "INVALID_REQUEST"}]}
+        )
+        assert is_create_media_buy_success(resp) is False
+        assert is_create_media_buy_error(resp) is True
+
+    def test_update_media_buy_guards(self) -> None:
+        from adcp.types.aliases import (
+            UpdateMediaBuyErrorResponse,
+            UpdateMediaBuySuccessResponse,
+        )
+
+        success = UpdateMediaBuySuccessResponse.model_validate(
+            {"media_buy_id": "mb_123", "packages": []}
+        )
+        assert is_update_media_buy_success(success) is True
+        assert is_update_media_buy_error(success) is False
+
+        error = UpdateMediaBuyErrorResponse.model_validate(
+            {"errors": [{"message": "not found", "code": "NOT_FOUND"}]}
+        )
+        assert is_update_media_buy_success(error) is False
+        assert is_update_media_buy_error(error) is True
+
+
+class TestImportFromAdcp:
+    """Test that guards are importable from top-level package."""
+
+    def test_import_generic_guards(self) -> None:
+        from adcp import is_adcp_error, is_adcp_success
+
+        assert callable(is_adcp_error)
+        assert callable(is_adcp_success)
+
+    def test_import_typed_guards_from_types(self) -> None:
+        from adcp.types import is_create_media_buy_success
+
+        assert callable(is_create_media_buy_success)