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.

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Claude Code v2.1.246

Attached machines can advertise themselves as idle

Under the hood
Useful1 Signal3
Cloud Sessions

A machine attached to a cloud session but running nothing now advertises itself as idle.

What

When a machine linked to a cloud session serves nothing but the probe that reports its own details, it now advertises an idle version of that probe whose description says it is attached but runs nothing, so the cloud side can tell an inert machine from a working one.

Details
  • The exact added sentence is "This machine is attached but does not run commands for this session."
  • On connecting, the machine now logs the list of tool names it announces and emits a new tengu_device_bridge_connect_frame event carrying the tool count, whether a shell is served, and the number of MCP tools.
  • No new gate: the existing checks for whether an attached machine is available still decide this.
Evidence

tengu_device_bridge_connect_frame, This machine is attached but does not run commands for this session.

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

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