You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ArtifactsArea: what it touches
ImprovementsKind: in v2.1.239,
ImprovementsSection of the release
What
When your environment's network allowlist denies the host that serves artifact content, the guidance now says the live version can be neither read nor handed over, and names the exact domain to add and where to add it.
Details
The domain to allow is *.frame.claudeusercontent.com, added in environment settings, or in admin settings if the environment is shared.
Only appears when that host is in the session's denied-egress set.
Evidence
*.frame.claudeusercontent.com
Strings lifted out of the shipped bundle, so the claim above can be checked against them.