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 v2.1.251 Home All releases olderv2.1.250
Claude Code v2.1.251

Oversized files rejected without reading them fully

You'll notice
Useful4 Signal2
Tools

Reading an oversized file fails fast instead of eating memory.

What

The Read tool no longer loads an entire file before deciding it is too big. Both the sync and async paths now read at most one byte past the limit and fail on the bytes actually read, so reading a huge file no longer costs the memory of the whole file.

Details
  • Failure is still reported as a file-too-large error.
  • The size check now lives in a single shared helper used by both paths.
Evidence

File exceeds maxBytes limit

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.251 →