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 document paths capped at 15 path segments, down from 31

You'll notice
Useful2 Signal2
Artifacts

Artifact collection paths are capped at 15 segments, down from 31, so deeper ones are rejected.

What

Every check and description of artifact document paths now allows at most 15 slash-separated segments in a collection path. Collections nested deeper than that, which were previously accepted up to 31, are rejected.

Details
  • each segment may use letters, digits and _ - . ~ : @ +; . and .. stay reserved; the document id is still a single segment
  • the note listing saved documents now tells Claude that a ~ in a document id is written as @ on disk
Evidence

'collection must be a path of 1-15 "/"-separated segments and doc_id one segment (letters, digits, _ - . ~ : @ + per segment; "." and ".." reserved)'

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 →