Claude Code cannot connect to GitHub's remote MCP server using OAuth authentication

[pablospe]

Environment

• Platform (select one):
  • [x] Anthropic API
  • [ ] AWS Bedrock
  • [ ] Google Vertex AI
  • [ ] Other:
• Claude CLI version: 1.0.51 (Claude Code)
• Operating System: Ubuntu 22.04
• Terminal: any

Bug Description

Claude Code cannot connect to GitHub's remote MCP server using OAuth authentication at https://api.githubcopilot.com/mcp/, while the same configuration works in VS Code.

Steps to Reproduce

Configure Claude Code with GitHub MCP server: claude mcp add github-server https://api.githubcopilot.com/mcp/

Additional Context

Related Issues:

https://github.com/github/github-mcp-server/issues/549#issuecomment-3013969822 https://github.com/github/github-mcp-server/issues/603