Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.239 Home All releases olderv2.1.238 v2.1.240newer
Claude Code v2.1.239

Artifact result renderers validate every field

You'll notice
Useful2 Signal2
Artifacts

All artifact result displays now validate their data instead of trusting a possibly corrupt transcript.

What

Threads, watches, rooms, asset upload and list, verify, room send, resume replies and unwatch results are all rewritten to check the recorded shape rather than trust it, so a corrupted transcript no longer produces confident but wrong output.

Details
  • Rows that fail validation are counted and reported as unreadable; list rows are capped.
  • Numbers and URLs go through validators with fallbacks such as "?" and "(unrecognized url)".
  • The model is told to re-run the action for a live read instead of quoting the stale record.
Evidence

This record of a verify result is unreadable

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 →