You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.232,
ImprovementsSection of the release
What
When Claude Code probes an MCP server for its protocol version, a reply with a mismatched id, unparseable content, or a stream that ends early is now handled as a legacy server and the connection proceeds, instead of surfacing an error.
Evidence
Connection closed during the version negotiation probe
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
