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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 v2.1.238 ·

Whiteboard skill copes with the server rewriting published pages

The whiteboard skill now copes with server-rewritten pages and stops safely when it cannot read state.

You'll notice Improvements
JSON All of v2.1.238
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.238,
ImprovementsSection of the release
What

The whiteboard helper now expects the server to add a 16-character id attribute to every open tag on a published page and matches the state and title tags accordingly, and decodes the numeric character entities the server writes. A page whose state block carries attributes it cannot safely read stops the write-back and tells you, distinct from a page that was simply read short.

Details
  • The prototype skill now names the artifact "verify" action as the one sanctioned check to run after publishing, and warns that an empty result is not evidence the demo works.
Evidence

dataIdAttrLen in the CLI

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

See this entry in the whole of v2.1.238 →

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