Follow Discord

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 v2.1.221 Home All releases ←olderv2.1.220 v2.1.222newer→

Claude Code v2.1.221 3 Aug 2026

Lock files expire instead of blocking forever

You'll notice

Useful4 Signal0

MCP

A crashed process no longer leaves a lock that blocks you forever; locks expire after a minute.

What

MCP token-refresh locks, WIF credential locks and other lockfile acquisitions now declare staleness and refresh intervals, so a lock left behind by a crashed process stops blocking after a minute.

Details

Acquisitions pass stale: 60000 and update: 5000.
Previously a holder that died left the lock in place indefinitely.

Evidence

stale: 60000,

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

See this entry in the whole of v2.1.221 →