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Claude Code v2.1.246

New initialize option perTaskStopAffordance changes what interrupt kills

Use it now
Useful4 Signal4
SDK Notable not in their notes

SDK clients can opt in so an interrupt kills only the current turn, not background agents.

perTaskStopAffordancestop_task
What

The SDK and stream-json initialize request accepts a new boolean saying your client renders a per-task stop control wired to the existing stop_task control request. Set it to true and an interrupt on an interactive stream-json session aborts only the current turn, leaving running background agents and workflows alive.

Details
  • Absence fails closed: the interrupt kills background tasks, as before.
  • A one-shot run with stdin closed still kills hold-back tasks even when the option is declared.
  • Client-declared at initialize; there is no server-side flag involved.
Evidence

Declares that this consumer renders a per-task stop control wired to the stop_task control request, so the user can stop an individual background task.

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.246 →