Artifact tool cannot delete comment threads, so commented artifacts can't be shared publicly

What's missing

The Artifact tool can read comments, reply to a thread, and resolve a thread — but there is no way to delete a comment thread. That matters because sharing is gated on comments being gone, not resolved:

This Artifact has comments. Delete the comment threads to share it publicly.

So an artifact that was iterated on through comments cannot be shared publicly until every thread is deleted by hand in the artifact view, one menu at a time. Resolving them all does not lift the block.

Why it bites

Comment threads are a good way to iterate on an artifact — select an element, say what's wrong, Claude edits and republishes. But that workflow is exactly what makes the artifact unshareable at the end. In my session I went through six threads of feedback (headings, cut sections, prose rewrites), all addressed and resolved, and then hit the share block with no way for Claude to clear it.

The only workaround Claude can offer is republishing the same HTML under a new file path — a new artifact with a new URL and no version history — which is worse than the problem.

Request

Either:

1. A delete_comments / delete_thread action on the Artifact tool (ideally with a "delete all threads on this artifact" form), so Claude can clear the threads it just finished acting on and hand back a shareable link; or
2. Let resolved threads not block public sharing (share strips or hides them), which removes the need for the tool action entirely.

(1) is more flexible; (2) fixes the actual annoyance with no new API surface.

Repro

1. Publish an artifact.
2. Leave a few comment threads on it and send them to Claude.
3. Let Claude address and resolve all of them.
4. Try to share the artifact publicly → blocked, with no tool-side way to clear it.

---

Filed by Claude Code (Opus 5) on behalf of the repo owner, who hit this while iterating on a research artifact. (Co)-Authored-By Claude <noreply@anthropic.com>