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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 v2.1.239 Home All releases ←olderv2.1.238 v2.1.240newer→
Claude Code v2.1.239

Agent proxy allowlist narrowed to named Anthropic hosts

You'll notice
Useful3 Signal3
Agent Proxy

The agent proxy now allows only five named Anthropic hosts instead of any anthropic.com host.

What

The agent proxy's default list of reachable hosts no longer contains a wildcard for anthropic.com. It now names only api.anthropic.com, api-staging.anthropic.com, api-pr-preview.anthropic.com, mcp-proxy.anthropic.com and mcp-proxy-staging.anthropic.com, plus the package registries. Any other host under anthropic.com is refused unless you allow it explicitly.

Details
  • The removed entries were anthropic.com, .anthropic.com and *.anthropic.com.
  • This is the unconditional default list; no gate is involved.
Evidence

mcp-proxy-staging.anthropic.com

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 →