What
If a published artifact declares a connector whose name is reserved for the viewer's local servers, publishing is now refused with a specific error telling you to rename it in claude.ai Settings, Connectors, rather than the older generic "unresolved" complaint. Publishing also retries when the server reports a rate limit that is not a recognised reset.
Details
- The error class is
reserved_mcp_server_nameand the report carries a count of reserved names; it is checked before the existing unresolved and over-cap classes. - A recognised reset condition produces a message telling the model the publish did not finish and to republish to the same slug after the reset, instead of sleeping and retrying.
- Oversize, unobserved and merged-entry messages now say "connector" or "local server" depending on the entry.
- The capability schema gained an optional per-surface features map.
Evidence
a name reserved for the viewer's local , reserved_mcp_server_name
Strings lifted out of the shipped bundle, so the claim above can be checked against them.