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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

Broader secret redaction

You'll notice
Useful4 Signal3
Privacy

Far fewer credentials leak into logs and output now.

What

The pattern used to strip credentials out of output and logs was rewritten from a narrow check into one that matches many assignment shapes: passwords, tokens, API keys, JWTs and similar. Fewer secrets leak into what you or the model see.

Details
  • Explicitly excludes jobserver-auth (a make internal, not a secret) and boolean-like values, to cut false redactions.
Evidence

jobserver-auth

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 v2.1.251 →