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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 v2.1.248

End-conversation tool explains what happens in a fork

Under the hood
Useful1 Signal2
Subagents

Background forks are told that ending the conversation from a fork does nothing.

What

The tool description now has a "Background forks" section saying that forked tasks such as memory consolidation, summaries and suggestions inherit the tool but calling it there has no effect on either the main conversation or the fork, and that a fork with welfare concerns should stop and say so in its output.

Evidence

In a forked task the tool does nothing: calling it ends neither the main conversation nor the fork.

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 v2.1.248 →