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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 v2.1.239

AWS and Google endpoint variables handled explicitly

You'll notice
Useful2 Signal2
Bedrock

AWS and Google custom endpoint variables are now forwarded and scrubbed deliberately.

What

Cloud endpoint overrides are now in the list of environment variables Claude Code forwards and scrubs deliberately, so Bedrock and Vertex users pointing at custom endpoints get consistent treatment.

Details
  • Added: AWS_ENDPOINT_URL, AWS_ENDPOINT_URL_STS, AWS_ENDPOINT_URL_BEDROCK, AWS_ENDPOINT_URL_BEDROCK_RUNTIME and the SSO/OIDC variants, plus CLOUDSDK_CONFIG, GCLOUD_PROJECT and GOOGLE_EXTERNAL_ACCOUNT_ALLOW_EXECUTABLES.
  • A separate environment-scrubbing helper drops its agent-proxy and settings-color special cases and gains an additional set of variables it deletes.
Evidence

AWS_ENDPOINT_URL_BEDROCK_RUNTIME

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 v2.1.239 →