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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

Artifact plan mode requires the live binding for stamps

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

You'll notice Improvements
JSON All of v2.1.221
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.221,
ImprovementsSection of the release
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 →

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