You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.307,
ImprovementsSection of the release
What
The description of the Agent tool was rewritten in the prompt Claude Code sends with its reminder when a skill runs. A skill is a packaged set of instructions Claude can use for a particular task. The Agent tool is how Claude passes work to a subagent, a separate helper copy of Claude.
The new text includes the rule: "Once you've delegated something, don't also run it yourself; wait for the result."
Why
This text is part of Claude's own instructions, so the rewrite changes how Claude behaves after handing work off. It is told not to repeat the same work in parallel with its helper.
