You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.280,
ImprovementsSection of the release
What
When an artifact (a file-like object Claude Code can read) fails to load with one of several specific error codes — the agent wasn't added, the agent doesn't own it, access needs to be requested, or the artifact is gone — Claude Code now shows a fixed instruction telling the model not to retry the read, and instead to tell the user the artifact couldn't be read and continue without it.
Why
This stops Claude from repeatedly retrying a read that can never succeed, and ensures the user is informed promptly instead of the model silently looping.
