Implement MCP OAuth (Authorization)

[chezsmithy]

Validations

• I believe this is a way to improve. I'll try to join the Continue Discord for questions
• I'm not able to find an open issue that requests the same enhancement

Problem

MCP has added Oauth authorization to it's specification. To allow the use of commercial and internally developed MCP servers continue should support Oauth authorizatoin for MCP servers and tools.

https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization

Solution

Implement OAuth authorization into the Vscode and IntelliJ extensions. When activating an MCP server that requires authorization the user should be redirected to a browser session to login, and then the client tokens should be sent back vscode or initelliJ to store the token securely so it can be refreshed and used in the MCP flows.

[04cfb1ed]

I'm interested in this feature (for MCP sse/streamable). If you need testers to validate early releases, I'm available!

[nejch]

GitLab just released their MCP endpoint with OAuth2 flow enabled (behind feature flags), so this would be cool to test :)

[chezsmithy]

Oauth has been added for sse enabled endpoints. Streamable https wouldn't be hard to add. #6800

[JonZeolla]

@sestinj I see this one is assigned to you. Is it on the roadmap? We want to use continue in some fairly popular classes, but we need modern MCP server support (oauth + streaming http) before we can

[chezsmithy]

@uinstinct you added the SSE Oauth support. Maybe a small change that could be done with the new agent?