From the course: Unboxing AI: Build a Remote MCP Server from Zero to Deployed with OAuth

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The MCP OAuth 2.0 flow visualized

The MCP OAuth 2.0 flow visualized - OAuth Tutorial

From the course: Unboxing AI: Build a Remote MCP Server from Zero to Deployed with OAuth

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The MCP OAuth 2.0 flow visualized

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- The problem, of course, is, as you'll see now, the loop is auth and it's on purpose. We want an auth loop that's very hard to fake and an auth loop that's very easy to invalidate, so that malicious actors can't go in and mess around with it. So, this is what that loop actually looks like with MCP. The MCP client, so you talking to the AI and the AI trying to connect to MCP sends a request to the MCP server without a token. So, it's just saying, "Hey, let me do the thing." The server responds with a 401 message saying, "You are unauthorized. You do not have access to these services. I deny this request." The client will then send a request back saying, "Give me access to the protected data on the server" to which the server responds with the metadata for the protected data. And within this metadata will be a link to the authorization server. The client can then send a request to the authorization server and say, "Hey, I want to log in." The authorization server then goes through a…

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