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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 v2.1.238

Warning when two live sessions of the same conversation both answer artifact comments

You'll notice
Useful3 Signal3
Artifacts

If two live sessions both auto-reply to artifact comments, you get a warning telling you to end one.

/tasks
What

After a session arms automatic replies to artifact comments, it looks for another live session of the same conversation and, if it finds one, raises a passive notification saying both will answer every comment and that you can end one from /tasks.

Details
  • The probe reads the registered session records after arming.
  • Only raised when auto-replies are enabled for the session and you have not disarmed them yourself.
Evidence

Another live session of this same conversation is running.

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 v2.1.238 →