You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.304,
ImprovementsSection of the release
What
A subagent is a helper Claude starts to work on part of a task. Resuming a subagent can now be refused by a rule. Before, a resume could only end by being cancelled or by the background session closing. Resuming also now has to be admitted under a limit on how many run at once.
Why
Rules can now block a subagent from picking up again.
