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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

Foundry and Bedrock Mantle appear in the provider base-URL checks

Under the hood
Useful2 Signal3
Providers

Base-URL safety checks now group Foundry and Bedrock Mantle with the other providers.

What

The grouping of provider endpoint and companion environment variables used for base-URL safety checks covers Foundry and Bedrock Mantle alongside Bedrock, Vertex, AWS and Google Cloud. The strings were already in the previous build, so this reflects how those providers are wired rather than new support.

Details
  • Includes ANTHROPIC_FOUNDRY_BASE_URL and references the CLAUDE_CODE_USE_FOUNDRY and CLAUDE_CODE_USE_MANTLE provider-selection variables.
Evidence

ANTHROPIC_FOUNDRY_BASE_URL

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 →