Prevent server errors on calls to unprovided capabilities #598
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Return a METHOD_NOT_FOUND error instead of JSONRPC_VERSION if MCP clients call the MCP server for unprovided capabilities.
Motivation and Context
There are a few misbehaving MCP clients in the wild that will disregard the MCP capabilities and still call the server for unprovided capabilities. This also avoids logging these errors in the server logs.
How Has This Been Tested?
Unit tests.
Breaking Changes
No.
Types of changes
Checklist