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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 v2.1.221 Home All releases ←olderv2.1.220 v2.1.222newer→

Claude Code v2.1.221 3 Aug 2026

Published PR-review pages carry an approve binding

You'll notice

Useful2 Signal0

Artifacts

Published PR review pages now carry an approve action, and republishing can't quietly change it.

What

A composed PR review artifact now ships an approve script and a stamp island recording the approve binding, and republishing is checked against it.

Details

The artifact includes an approveScript plus a stamp island holding the approve binding.
Validation rejects a republish that changes the binding.
All approve-binding validation messages are new in this build.

Evidence

a republish must reuse the published stamp island exactly

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

See this entry in the whole of v2.1.221 →