Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.251 Home All releases olderv2.1.250
Claude Code v2.1.251

Subagents can start without a prompt when every URL in them is already allowed

You'll notice
Useful4 Signal3
Permissions

Subagents launch without a prompt when every URL in them is already allowed.

What

Launching a subagent no longer asks for confirmation when the agent type is active and every URL mentioned in its prompt would already be allowed by the WebFetch permission rules. If any URL is not already permitted, or the prompt carries too many of them, you get the usual permission prompt.

Details
  • only applies in permission modes that would otherwise require an explicit confirmation for the launch
  • each URL is run through WebFetch's own permission check and must come back as allowed
  • two internal conditions disable the shortcut entirely, in which case launches always prompt
Evidence

this approval was already used by an earlier attempt

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.251 →