[Bug] Claude Code cannot access shared Cowork artifacts from teammates

Bug Description
Claude Code cannot read Cowork shared artifacts the logged-in user has access to

A teammate shared a Cowork artifact with me (deep link: claude://cowork/shared-artifact?uuid={uuid}). It opens fine in Claude Desktop for Linux under my account.

But from Claude Code, authenticated as the same account, there's no way to read it:

• WebFetch on https://claude.ai/code/artifact/{uuid} returns "artifact not found — it may have been deleted, or it has not been shared with you", even immediately after a fresh /login.
• The Artifact tool's list action only shows artifacts I published, not ones shared with me.
• There's no public web URL for team-shared Cowork artifacts (claude.ai/public/artifacts/{uuid} 404s), so there's nothing else to point a tool at.

Expected: Claude Code should be able to resolve Cowork share grants for the logged-in user — either via the authenticated artifact endpoint or a dedicated tool — so I can ask Claude to work with content a teammate shared with me. Right now the only workaround is manually copying the content out of the desktop app.

Environment Info

• Platform: linux
• Terminal: pycharm
• Version: 2.1.204
• Feedback ID: e03b6a17-b669-4b15-a457-690969afdc39

Errors

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