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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 v2.1.0 7 Jan 2026

OAuth URL Parameter Redaction

Sensitive OAuth parameters are now redacted from URLs in logs and error messages for improved security.

Details

Redacts: state, nonce, code_challenge, code_verifier, code
Parameters are replaced with [REDACTED] in logged URLs

Evidence

gB2() at line 296262 (contains Q.searchParams.set(B, "[REDACTED]"))

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

See this entry in the whole of v2.1.0 →