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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.

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Claude Code v2.1.221

Artifact plan mode requires the live binding for stamps

You'll notice
Useful2 Signal0
Artifacts

Artifact plan mode now rejects a stamp without its live binding, explaining why.

What

Supplying a stamp without a live binding is now rejected with a long explanatory message instead of being accepted.

Details
  • Validation throws when stamp is present and live is not.
  • Republish additionally runs an approve-binding check and throws pr_review_republish_stamp on failure.
  • The template check only accepts stamp bindings when allowStampBinding is set.
Evidence

stamp requires the live binding

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 →