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 Agent tool lets Claude hand a task to a subagent, a separate helper that returns a summary. Its description in the command-init prompt, used by the command-line tool and the SDK, has been rewritten.
The old text mainly listed when to delegate. The new text warns that a subagent's mistakes come back sounding just as confident as its findings. It also warns that a subagent given Claude's own guess tends to report that guess as confirmed.
The standard Agent tool description is unchanged.
Why
These are instructions Claude follows, so they may make Claude more careful about trusting a subagent's answer. That effect has not been measured.
