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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 v2.1.232

The artifact self-update permission is now called artifact

Use it now
Useful3 Signal2
Artifacts

Self-updating artifact pages now declare an artifact capability, though the old self spelling still works.

capabilitiesartifact
What

Pages built by the design canvas, whiteboard and artifact editor that can publish changes back to themselves now declare capabilities: {artifact: {}}; the older spelling self is still accepted. Declaring both with different configs is rejected.

Details
  • At runtime the page looks up window.claude.artifact and falls back to window.claude.self; permission checks ask for artifact when it is present.
  • Skill and template guidance now says to declare exactly one spelling, and the whiteboard's Send to Claude instructions ask for artifact: {}.
  • The failure wording changed too: without the capability the canvas no longer "opens read-only", it simply cannot keep changes and Save is refused.
Evidence

capabilities: {artifact: {}, downloads: {}}, `capabilities declares both artifact and self — two , legacy spelling self```

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

See this entry in the whole of v2.1.232 →