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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 v2.1.247 26 Aug 2026

Headless resume can re-arm for artifact comments but never takes over

Under the hood

Useful1 Signal2

Artifacts

Resumed headless sessions re-arm for artifact comments but will never take over from another holder.

What

A resumed headless session now goes through a shared routine to re-arm for artifact comments, and that routine is wired with takeover requests hard-coded off, so such a session will never ask to take over from another holder.

Details

Held state is re-probed after 10 seconds by default.
The comments gate is supplied as a dependency, and the existing message for a failed gate check is unchanged.

Evidence

[frame-live] headless resume re-arm gate failed:

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

See this entry in the whole of v2.1.247 →