bug: Cannot Connect to GitHub MCP Server Using OAuth

[NiharDoshi99]

Description

When attempting to connect to the GitHub MCP server using OAuth-based authentication.

Code Sample

// Minimum code snippet to reproduce the issue
// Remove if not applicable

I am using this code sample
https://github.com/mark3labs/mcp-go/blob/main/examples/oauth_client/main.go

Environment

• Go version (see go.mod): 1.25.4
• mcp-go version (see go.mod): v0.43.0

Github MCP

https://api.githubcopilot.com/mcp/