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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.

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Claude Code v2.1.246

Rewritten guidance for machines attached to a session, including upload-only sync

Under the hood
Useful3 Signal3
Remote Devices

Claude now gets clearer rules about attached machines, including an upload-only sync mode.

What

The instructions Claude gets about a machine attached to your session were rebuilt around three sync modes: two-way, upload-only and off. In upload-only mode Claude is now told that edits made in the session are not carried back to the machine, and it is told which file tools act locally and which act on the machine.

Details
  • Wording branches on the machine's declared sync mode into "here", "refreshed" and "machine" phrasings.
  • New timing rules: your local changes reach the machine at the end of a turn; files a remote command creates only arrive with your next message; git-ignored files never cross.
  • Emitted whenever machines are attached to the session.
Evidence

- Results say where each call ran.

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 v2.1.246 →