ChatGPT Sites tutorial: building a cookie clicker with a database and MCP server

craigsdennis · x · 2026-10-23

Developer Craig Dennis kicks off a series on ChatGPT Sites' backend capabilities with a Cookie Clicker demo: starting from a single prompt, he adds persistent storage for clicks, then wires up an MCP server so ChatGPT and Codex can join in — tested with MCP Inspector, queried via ChatGPT, and even clicked via Codex CLI. A hands-on look at Sites' database, auth and connector plumbing, showing humans and AI sharing one app state.

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