Plan session events

[IeuanWalker]

The SDK has the following methods for plans -

• session.rpc.plan.read()
• session.rpc.plan.update()
• session.rpc.plan.delete()

Would be usufull if there was session events around it, either one for all i.e. PlanChanged or and event for each action -

• Created
• Updated
• Deleted

This would allow us to auto track the plan easily when the agent is running

[cmart12]

Closing — this was addressed in v1.0.0-beta.3 (release notes). Applications can now register callbacks for exitPlanMode.request and autoModeSwitch.request, giving full control over plan-mode transitions and automatic model switching. See onExitPlanMode / onAutoModeSwitch in session config.

[cmart12]

Reopening — closed prematurely during analysis. Will re-evaluate before any further action.

[patniko]

Closing as fixed after verification against the current public SDK sources and bundled behavior.

Public evidence

• #1305 — Update @github/copilot to 1.0.49-0 (merged 2026-05-15)
• commit 215676e86156 — Update @github/copilot to 1.0.49-0 (Update @github/copilot to 1.0.49-0 #1305)
• nodejs/src/generated/session-events.ts — PlanChangedEvent; PlanChangedOperation
• dotnet/src/Generated/SessionEvents.cs — SessionPlanChangedEvent
• dotnet/test/E2E/RpcEventSideEffectsE2ETests.cs — Should_Emit_Plan_Changed_Event_For_Update_And_Delete; Should_Emit_Plan_Changed_Update_Operation_On_Second_Update
• nodejs/test/e2e/rpc_event_side_effects.e2e.test.ts — should emit plan changed event for update and delete; should emit plan changed update operation on second update

The reported behavior/request is implemented at the current SDK baseline, so this issue is being closed as completed.

Public SDK baseline: github/copilot-sdk d5c9d06d8c41.