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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 v2.1.225 ·

Tool renderers can now supply a progress renderer

Artifact tools can now show live progress lines in the transcript while they work.

Under the hood Internal Changes
JSON All of v2.1.225
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
Internal ChangesKind: in v2.1.225,
Internal ChangesSection of the release
What

The tool UI override map for the artifact tool passes renderToolUseProgressMessage alongside renderToolResultMessage.

Details
  • This is the path by which the publish-retry progress line reaches the transcript.
Evidence

renderToolUseProgressMessage

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

See this entry in the whole of v2.1.225 →

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