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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.221 ·

Whiteboard telemetry parsed out of published page state

Publishing a whiteboard now counts its elements and pings by reading the page itself.

Under the hood Internal Changes
JSON All of v2.1.221
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 v2.1.221,
Internal ChangesSection of the release
What

Whiteboard publishes now read the page's own embedded state to report element counts and interaction.

Details
  • Parses the inline <script type="application/json" id="wb-state"> block with a zod schema covering els, pingCount and ping.n.
  • Emits whiteboard_publish with seeded, el_count and is_first_publish.
  • Emits whiteboard_turn with ping_count and el_count when the ping count grows between publishes.
Evidence

whiteboard_publish

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

See this entry in the whole of v2.1.221 →

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