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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.

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Claude Code v2.1.219 24 Jul 2026

Daemon peer-uid lookup moved to a Bun API

Under the hood

Useful2 Signal0

Elsewhere

The background daemon uses one runtime call to identify socket callers on Mac and Linux; Windows still unsupported.

What

The unix-socket peer credential lookup dropped its separate macOS and Linux implementations in favour of a single runtime call.

Details

Both platforms now call Bun.ant.getPeerUid(t)
Still returns null on Windows
Other failures log "[daemon] peer uid lookup failed:" with the error

Evidence

Bun.ant.getPeerUid

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

See this entry in the whole of v2.1.219 →