Using Github MCP with remote url gives 401 / 403 error

[IllesAprod]

I have been trying to setup Github MCP for Relay using the remote address.

I generated a Personal Access Token in Github, and using this config, but I constantly get authorization (401, 403) errors.

        'github' => [
            'url' => env('RELAY_GITHUB_SERVER_URL', 'https://api.githubcopilot.com/mcp/'),
            'api_key' => env('RELAY_GITHUB_SERVER_API_KEY', 'xxx'),
            'timeout' => 30,
            'transport' => \Prism\Relay\Enums\Transport::Http,
        ],

I debugged that the api key is sent to Github, but couldn't figure out the underlying problem yet.

Thanks for the help!