Add OAuth support for remote mcp servers

[MarcoGlauser]

Remote MCP servers that expect oauth authentication currently throw a 401 error.

message: Error POSTing to endpoint (HTTP 401): {"error":"invalid_token","error_description":"Missing or invalid access token"} stack: Error: Error POSTing to endpoint (HTTP 401): {"error":"invalid_token","error_description":"Missing or invalid access token"}
    at $Y.send (/snapshot/copilot-client/node_modules/@modelcontextprotocol/sdk/src/client/streamableHttp.ts:414:15)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)

Examples are popular services like Sentry, Linear or even github (access through PAT possible, but that's not great).
Being able to easily interact with these official MCPs would be a game changer.
https://docs.sentry.io/product/sentry-mcp/
https://linear.app/changelog/2025-05-01-mcp

[flytiny]

We now support GitHub OAuth for the GitHub remote MCP server.

[tcvall86]

Jason Chen (@flytiny)

I am unsure but when trying integrating with other remote servers such as sentry or atlassian the postback does not seem to go through. Following the latest specification
https://modelcontextprotocol.io/specification/2025-06-18/basic/authorization#sequence-diagram

Are there any plans to support OAuth discovery endpoints with fallback clientid similar to what vscode offers? microsoft/vscode#255633
Or is there somewhere a clarification on using github oauth with other remote servers?

Added: GitHub OAuth authentication support for remote MCP servers.

https://plugins.jetbrains.com/plugin/17718-github-copilot

I can add a separate issue if you want for this. It's only a few users for us that are working with intellij

[flytiny]

@flytiny

I am unsure but when trying integrating with other remote servers such as sentry or atlassian the postback does not seem to go through. Following the latest specification https://modelcontextprotocol.io/specification/2025-06-18/basic/authorization#sequence-diagram

Are there any plans to support OAuth discovery endpoints with fallback clientid similar to what vscode offers? microsoft/vscode#255633 Or is there somewhere a clarification on using github oauth with other remote servers?

Added: GitHub OAuth authentication support for remote MCP servers.

https://plugins.jetbrains.com/plugin/17718-github-copilot

I can add a separate issue if you want for this. It's only a few users for us that are working with intellij

Thank you for your feedback. I agree that we should support this, and I will create an issue in our internal repository to track it.

[ranjithsnair]

Jason Chen (@flytiny)

Is there any update regarding the complete support of the latest MCP specification? When we can see this feature in PyCharm? This enhancement would unblock all PyCharm users within our organization, as they are currently forced to use VSCode to access our internal OAuth MCP servers. The error we are getting is "No authentication provider found for authserver: ...."

[lTarsoly]

Jason Chen (@flytiny) it would be a great help for us as well if this was implemented

[flytiny]

@flytiny

Is there any update regarding the complete support of the latest MCP specification? When we can see this feature in PyCharm? This enhancement would unblock all PyCharm users within our organization, as they are currently forced to use VSCode to access our internal OAuth MCP servers. The error we are getting is "No authentication provider found for authserver: ...."

Thank you for your feedback. We created this task in our internal repository last week, and I am currently working on it.
[MCP] Support OAuth discovery endpoints with fallback clientid

[flytiny]

@flytiny it would be a great help for us as well if this was implemented

We have already implemented GitHub OAuth support for the MCP server, and I am currently working on adding support for a fallback clientId.

[blueleader07]

Jason Chen (@flytiny) any update / ETA on this feature? We use Entra (Azure) AD internally at my company and currently limited to VSCode. Thanks for your work on this!

[rpendruTeladoc]

Is there any update to this issue? We are getting error"No authentication provider found for authserver:" for our custom internal MCP. The same MCP works fine with VS code and cursor (dynamic client registration).