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 v2.1.242 Home All releases olderv2.1.241 v2.1.243newer
Claude Code v2.1.242

Artifact read-back failures no longer feed server payloads to the model

You'll notice
Useful3 Signal2
Artifacts

Failed artifact read-backs now give a short error instead of dumping server output into context.

What

When reading an artifact back fails or returns malformed data, the returned error is now just read-back HTTP <status> or malformed read-back body. The full response body and parser message go to the debug log instead of into the model's context.

Evidence

malformed read-back body

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

See this entry in the whole of v2.1.242 →