[BUG] Claude Desktop GitHub MCP connector OAuth routing issue - tools not accessible despite "Connected" status

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Claude Desktop's GitHub connector shows "Connected" but GitHub MCP tools never register in conversations due to OAuth authentication mismatch.
Environment:
Account: [info@lomediagroup.com](mailto:info@lomediagroup.com)
GitHub username: hannahlullo
Product: Claude Desktop (Cowork)
Expected Behavior:
GitHub MCP tools should be accessible in conversations when connector shows "Connected"
Actual Behavior:
Cowork GitHub connector status: "Connected"
GitHub MCP tools never appear in conversations
GitHub API calls return 404 on owned repos (e.g. hannahlullo/social-media-ops)
Claude GitHub App shows "Never used" in GitHub settings
Root Cause:
Claude Desktop appears to be connecting to "[Dev] Anthropic Github MCP Connector" instead of the production "Claude GitHub App" that's properly installed with Read+Write access.
Troubleshooting Completed:
Restarted desktop app multiple times
Toggled connector off/on with 2-3 minute delays
Cleared auth state
MCP Inspector confirms connection works independently
Technical Details:
MCP Inspector shows "connected" but Claude Desktop can't access tools, confirming this is a Claude-side OAuth routing issue rather than server configuration problem.

What Should Happen?

allow claude cowork to access github

Error Messages/Logs

Steps to Reproduce

1. do to connectors
2. connect the github a window pops up and say authorize not install
3. it redirects to claude mac app it shows connected
4. claude wo work keeps saying it does not have access to that connector

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Claude code 4.7

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_