Blog Post
Smart AI Integration with the Model Context Protocol (MCP) ... part 5
Hi Mark
thanks a lot for this helpful blog.
But I want to do the authentication without browser-based user authentication. I registered my mcp client app as confidential app in Azure with a client secret. How can I now do the authentication with the client id & secret without any user interaction... the client is trusted and should be allowed to call the mcp server.
Thanks for any hints, samples or ideas, I couldnt find anything in the net. BR markus
- Mark Harrison (UK)Jul 23, 2025
Microsoft
Hi Markus mbuchberger1967 ... OAuth is useful when you want the server to know who the user is to do authz - ie behave differently depending on the user or maybe their role. If its a fixed client and no user interaction then maybe the simplest authentication mechanism is just to check a key in the payload - much like an API key. Catch me on LinkedIn if you want to discuss. /markharrison-uk
- mbuchberger1967Jul 23, 2025Copper Contributor
ok i see your point. is there support for your proposal in the MCP C# lib?
Thx for the quick reply. is it ok to discuss here?- Mark Harrison (UK)Jul 23, 2025
Microsoft
Sure discuss here - its just these forums seem a bit clunky :-) for a lot of dialogue.
Not seen any proposal in the C#SDK. To validate a key passed in the http payload is just standard .NET coding ... i dont think it would be needed in the SDK.
- mbuchberger1967Jul 23, 2025Copper Contributor
I cannot add a marker for your name to notify you :(
- mbuchberger1967Jul 23, 2025Copper Contributor
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