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Reading a new release v2.1.251 Analysing changes · 2/5 Writing the entries · 2/4 steps 470 findings $18.91 so far

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 v2.0.37

Client Certificate Support for WebSocket Proxies

What: WebSocket connections now support HTTPS proxies with client certificate authentication (mTLS).

How to use: Configure client certificates via environment variables:

export CLAUDE_CODE_CLIENT_CERT=/path/to/cert.pem
export CLAUDE_CODE_CLIENT_KEY=/path/to/key.pem
export CLAUDE_CODE_CLIENT_KEY_PASSPHRASE=optional_passphrase

Details:

  • New CFA() function creates per-request proxy agents with certificate support
  • Applies to both API requests and WebSocket connections
  • Respects proxy bypass rules on a per-URL basis
  • Replaces global proxy agent pattern with per-connection agents
  • Evidence: CFA() function at line 151929, WebSocket usage at line 488707, API usage at lines 483464 and 483483

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 v2.0.37 →