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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 v2.1.224

Session info reports the messaging socket path

Not switched on
Useful2 Signal3
Cross-Session Messaging not in their notes

SDK and stream-json startup output can report the messaging socket path when the inbox is running.

messaging_socket_path only appears when the default-off cross-session inbox has started.

messaging_socket_path
What

The system/init message sent to SDK and stream-json consumers now carries messaging_socket_path, read from the running cross-session messaging module rather than from the environment. It is only set when that messaging inbox started, which is itself gated off by default.

Evidence

messaging_socket_path

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 v2.1.224 →