Remote: Incompatibility with Claude (Web) Integrations

[trieloff]

Describe the bug

Setting up the remote GitHub MCP Server hosted at https://api.githubcopilot.com/mcp/ under https://claude.ai/settings/integrations leads to following issues:

1. even after entering the URL with a trailing slash, Claude corrects it to https://api.githubcopilot.com/mcp
2. upon clicking the "Connect" button Claude Code shows the error message "There was an error connecting to GitHub server. Please check your server URL and make sure your server handles auth correctly."

No other error message is shown, no more details are provided. The integration does not change into the "connected" mode.

Affected version

• the remote GitHub MCP Server hosted at https://api.githubcopilot.com/mcp/

Steps to reproduce the behavior

1. open https://claude.ai/settings/integrations
2. log in to Claude, if not logged in
3. click "Add integration"
4. enter "Integration name": GitHub
5. enter "Integration URL": https://api.githubcopilot.com/mcp/
6. click "Add"
7. locate the "GitHub" integration in the list of integrations
8. click "Connect"

Expected vs actual behavior

I expected the connection to be established, and asked for credentials, potentially by being redirected to the GitHub website.

Instead I got an error message reading "There was an error connecting to GitHub server. Please check your server URL and make sure your server handles auth correctly."

Logs

No logs are available.

[kamal]

The error is clearer when you attempt to add it to Claude Code. It complains of Dynamic client registration failing.

[trieloff]

Good clue, but Claude Code and Claude Web use different MCP client implementations. Claude Web gets confused when MCP tool calls don't return a content array, Claude Code takes whatever else is in the result.