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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 v2.1.239 ·

Artifacts are HTML-only

You can only publish HTML document artifacts now; spreadsheet and slide kinds no longer appear.

You'll notice Removed
JSON All of v2.1.239
You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
RemovedKind: in v2.1.239,
What probably matters to youSection of the release
What

The list of artifact kinds behind the publish menu is down to documents; the spreadsheet and presentation deck kinds are gone. The tool now describes its file input as "Path to the .html file to render", the unsupported-file-type error no longer suggests .md as an alternative, and the artifact-design guidance says Markdown is only for a skill that explicitly asks for it.

Details
  • The per-kind commenting flag went with the removed kinds.
  • No flag guards the removal.
Evidence

unsupported file type: ${e || "(none)"} \u2014 Artifact publishes an .html page.

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

See this entry in the whole of v2.1.239 →

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