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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 v2.1.247

Login credentials are re-read only when the keychain entry actually changed

You'll notice
Useful2 Signal2
Auth

Your login token is re-read from the keychain only when it genuinely changed, not on every check.

What

The cached OAuth token is now held per host alongside the last credentials modification time, credentials version and last keychain access token, so a change check that cannot read a version falls back to comparing the keychain token itself and only invalidates the cache when it genuinely differs.

Details
  • Replaces a set of memoized functions cleared piecemeal with a single per-host object exposing clear() and resetChangeCheck().
  • The object also holds the in-flight fetch promise, so concurrent callers share one refresh.
Evidence

lastKeychainAccessToken

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 v2.1.247 →