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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 v2.1.223

Credential read errors are classified by errno

You'll notice
Useful4 Signal0
Auth

A temporary failure reading your credentials no longer looks like being logged out.

What

A failed credentials read is now distinguished from an empty credential store, so a transient read failure no longer causes token refresh to proceed as if you had no credentials.

Details
  • ENOENT, EISDIR and ENOTDIR return null, meaning no credentials
  • EACCES and EPERM return null on non-Windows
  • anything else returns the READ_FAILED sentinel, which token refresh treats as transient
  • the plaintext backend's strict read routes its errno through the new helper
Evidence

secureStorage.READ_FAILED

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 v2.1.223 →