Simon Willison published a technical guide explaining how to connect custom MCP (Model Context Protocol) servers to Claude and ChatGPT’s web interfaces. He documents that while both platforms support MCP server integration, the setup process is not straightforward and requires multiple steps, including enabling ‘Developer mode’ for ChatGPT accounts. Willison demonstrates the process using an unauthenticated MCP server for his own blog that allows read-only SQL queries against a copy of his site’s database.
