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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.227 ·

Artifact tool: put the title near the top, and pass a URL to update an existing artifact

To update an existing artifact you must pass its URL; find it with the list action.

Use it now Improvements
JSON All of v2.1.227
Use it nowTier: how much it should matter to you
4Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.227,
What probably matters to youSection of the release
What

The Artifact tool's instructions now state that only the first 8KB of the file is scanned for the <title>, so a title further down will be missed. The guidance for updating an artifact from an earlier conversation was rewritten: find its URL with action: "list" or ask for it, because publishing without url creates a new artifact instead of updating the old one.

Evidence

only the first 8KB of the file is scanned for it

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

Read from
Names in the bundleurlaction: "list"

See this entry in the whole of v2.1.227 →

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