Agent tool guidance rewritten in the general-purpose subagent prompt
In the general-purpose subagent prompt, the Agent tool text now tells Claude how to brief a helper: goal, what's ruled out, files to read, narrow scope
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 for the general-purpose subagent. A subagent is a separate helper copy of Claude that takes on a piece of work, and the Agent tool is how one is started.
The new text tells Claude to brief a helper like a peer:
State the goal and what has already been ruled out.
Point it at the files and docs worth reading instead of retyping them.
Keep the scope explicit and narrow.
Why
This text is part of Claude's own instructions, so the rewrite changes how Claude hands work over. Clearer, narrower briefs give the helper what it needs without repeating material it can read itself.
