Both the workflow-spawning tool and the send-message tool now throw an error if the calling agent has been stopped and its stop is still completing, instead of letting the action proceed mid-teardown: "This agent has been stopped and its stop is still completing; it cannot launch workflows or act on existing runs."
Stopped agents can no longer launch workflows or send messages while their stop is still finishing
A stopped agent can no longer launch workflows or send messages while its teardown is still in progress.
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
Bug FixesKind: in v2.1.259,
Bug FixesSection of the release