Source Intelligence

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 v2.1.247 Home All releases olderv2.1.246 v2.1.248newer
Claude Code v2.1.247

Your local machine can run tool calls on behalf of a cloud session

Under the hood
Useful3 Signal4
Cloud Sessions

Your machine can now answer tool calls sent back to it by a cloud session.

What

The remote session manager can now accept work sent back from a cloud session and answer it locally. Incoming control requests of subtype remote_tool_call, remote_plumbing_call and remote_tools_probe are tracked as pending served requests, answered, and cancelled or retired when the session gives up.

Details
  • Whether this runs is decided by whether a serving callback is registered, not by a named feature flag; no flag guarding it appears in the build.
  • With no serving callback registered, the request is left unanswered and the reason is logged as not serving tools here.
  • The manager also tracks whether the remote worker is alive and whether this machine is currently serving.
Evidence

not serving tools here, leaving it unanswered

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

See this entry in the whole of v2.1.247 →