[MCP] APIM 4.6.0 MCP Auth flow is not working with 3rd party clients.

[AnuGayan]

Description

The following issues have been identified and need to be fixed for the MCP feature of API Manager 4.6.0

• MCP from an API proxy
  • Capabilities are not properly returned
  • Only the supported methods have been handled by default, hence some routine method calls fail when 3rd party clients call the server.
  • The Auth path with 3rd party client is failing when the auth header is not provided and client tries to generate the token from the application.
• MCP proxy
  • Capabilities are not properly returned
  • Only the supported methods have been handled by default, hence some routine method calls fail when 3rd party clients call the server.
  • The Auth path with 3rd party client is failing when the auth header is not provided and client tries to generate the token from the application.

Steps to Reproduce

1. Create an MCP from an API and an MCP from a MCP server.
2. Try to invoke it via a 3rd party client (VS Code)

Version

4.6.0, master

Environment Details (with versions)

No response