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 v2.1.71 Home All releases olderv2.1.70 v2.1.72newer
Claude Code v2.1.71

Handoff Classifier (Sub-Agent Safety Review)

What

A new safety classifier that reviews sub-agent output when control is handed back to the main agent, checking for potentially dangerous actions performed by sub-agents.

Details
  • When a sub-agent completes, its actions are reviewed against security rules before the main agent acts on the output
  • If the classifier flags an issue, the main agent sees: "SECURITY WARNING: This sub-agent performed actions that may violate security policy"
  • If the classifier is unavailable, a warning note is shown instead of blocking
  • Works in conjunction with the auto mode classifier
Evidence

Handoff classifier (search for "Handoff classifier flagged sub-agent output")

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

See this entry in the whole of v2.1.71 →