Manage authentication with remote MCP

[GregoireW]

Looking at the code, I already know it will be complex so I try this discussion.

I got multiple remote MCP server (sse & httpstream) secured with oauth.

Usually those server are used by tool on local computer, and this is not a big problem, client are managing authentication, there is a single user so it is quite easy.

I try to put an endpoint on my web application (deployed somewhere, used by many) that need to use an agent with those MCP servers.

I'd like to have something like:

• discovery of the toolset => use the client_credential from my application
• the endpoint are protected via oauth2, I can token exchange to have an access token for the user with my application client_id then I want this token to be sent when a tool is used.

At the current status of this project, is it even possible ? and How ? I guess it can be possible by updating the session manager to use a specific McpTransport builder that provide a specific HttpClient to the McpClientTransport but I do not know if there is indirection in the threading model that would make this irrelevant...
If you have ideas // examples // .... you would be welcome

Thank you

[voborl00]

I started issue for this, do not know whether it's better to discuss or make issue: #516