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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 28 Aug 2026

REPL process cleaned up with its worker

You'll notice

Useful2 Signal1

Elsewhere

A leftover REPL process is now killed along with the worker it belonged to.

What

Shutting down a background worker now also checks for and kills the REPL process associated with it, so that process no longer outlives the worker it belonged to.

Evidence

UV(I.replPid, I.replProcStart)

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

See this entry in the whole of v2.1.251 →