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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 v2.1.233

Gateway can forward user identity headers, plus a new ccr-gateway host mode

Use it now
Useful2 Signal3
Gateway Notable

Gateway upstreams can pass your sanitised identity headers along, and a new ccr-gateway host mode takes its origin from --sdk-url.

forwardUserIdentity--sdk-url
What

An upstream configured with forwardUserIdentity now has sanitised identity headers, including x-claude-gateway-user-email, added to its outbound requests. A new ccr-gateway host kind takes its origin from --sdk-url.

Details
  • Config validation warns when forward_user_identity is set on a deployment where no session principal can exist, since the headers would then never be sent.
  • ccr-gateway reports the same missing-URL and rejected-URL errors as the existing ccr-session host kind.
  • Upstream 400 and 413 responses now get their own error-message mapping instead of a generic one.
Evidence

x-claude-gateway-user-email

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

See this entry in the whole of v2.1.233 →