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 v2.1.246 Home All releases olderv2.1.245 v2.1.247newer
Claude Code v2.1.246

Blocked artifact content fetches say whether the block is temporary

You'll notice
Useful2 Signal2
Artifacts

A proxy-blocked artifact fetch now says whether it's a temporary scan outage or a permanent block.

What

When the sandbox proxy blocks a fetch of artifact content with HTTP 403, the failure is now sorted into a temporary scan outage versus a permanent block, each with its own explanation, so the model knows whether to retry.

Details
  • A 403 whose reason ends in "(fail closed)" is treated as transient; other content-scan blocks are treated as permanent.
  • A separate message covers proxy denials that are not content-scan related.
Evidence

artifact content fetch blocked: the sandbox proxy's content scan was unavailable (HTTP 403). This is transient; retry.

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

See this entry in the whole of v2.1.246 →