You'll notice
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New error tells the user to retry when an artifact watch's action or URL no longer matches
What
The artifact watch tool (which monitors an artifact for changes) now returns a distinct error, watch_target_changed, when the action or url involved no longer matches the specific watch that was previously approved. The message tells the caller that nothing was carried out and to retry so the watch is checked again.
Why
This prevents Claude Code from silently acting on a stale or mismatched watch approval, instead surfacing a clear signal that the request needs to be re-checked before proceeding.
Names in the bundlewatch_target_changed