You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What
An artifact is something Claude publishes for you, made up of one or more files. When Claude Code refuses to publish, it previously only had wording about files Claude had to read before replacing them. There is now a third case:
Files already on the artifact that Claude cannot see: Claude Code says it was not published, and that Claude will not replace or remove those files unless you ask.
Separately, when you enable or disable an MCP server (a connection that gives Claude extra tools), Claude Code now reports who holds a disabled server.
Why
The message tells you the real reason a publish was refused, so you know whether to ask Claude to replace those files.
