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.
Artifact auto-reply notices are structured notifications
Under the hood
Useful3Signal4
Artifacts
Artifact auto-reply stop notices are structured, and new comments delay a watcher's idle teardown.
What's wrong with this entry?
Anonymous. No account, no email.
What
Notices that an artifact auto-reply subscription has stopped are now sent as task notifications carrying a type and a summary rather than plain strings. Supervisors watching a live artifact also refresh their last-activity timestamp on a new comment or publish, which delays idle teardown.
Evidence
taskType: "artifact-auto-react"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.