You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MCPArea: what it touches
Bug FixesKind: in v2.1.221,
Bug FixesSection of the release
What
A stored initialize response for a claudeai-proxy server is now discarded when its protocol version is unsupported, not only when it fails schema validation.
Details
Applies to cachedInitResponse on the claudeai-proxy path.
Previously only an InitializeResult validation failure caused a discard; now an out-of-range protocolVersion does too.
Either failure logs and falls back to a real initialize round trip.
Evidence
falling back to real initialize
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
