You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Background TasksArea: what it touches
ImprovementsKind: in v2.1.321,
ImprovementsSection of the release
What
When a stop request names an ID shaped like a local shell task's ID and no such task exists, Claude Code no longer tries it as an agent's name. The request fails with a message asking for the agent's task ID.
Tasks that were killed without you stopping them also get an extra notice.
Why
A stop request can no longer end up stopping the wrong agent because its ID happened to look like a name.
