You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.319,
ImprovementsSection of the release
What
When the relay answers with an HTTP error code, Claude Code now turns that code into a named reason:
404 becomes address_used_or_gone
429 and 503 become relay_busy
504 becomes partner_too_slow
There is also a message for when a file is not sent because the upload address in a connector's answer was refused. A connector is an outside service Claude Code can reach.
Why
These point to error handling for the relay and for sending files through connectors.