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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

System prompt lists the CLIs already wired up for the agent proxy

You'll notice
Useful3 Signal3
Agent Proxy

Claude now sees which CLIs are preconfigured for the agent proxy and prefers them over raw curl.

What

When the environment reports command-line tools that are preconfigured to go through the agent proxy, the prompt now lists them by name and tells Claude to reach for a skill or MCP tool first, those CLIs second, and raw curl last.

Details
  • The list is only rendered when the environment supplies preconfigured proxy CLIs; otherwise the guidance is unchanged.
Evidence

prefer a skill/MCP tool, then these, over raw curl.

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 →