I Built an npm Package in 6.5 Hours with AI Agents — And It Actually Works

Here's the short version: I went from an empty folder to a published npm package in one sitting. Nine TypeScript files. Forty-eight tests. Real cryptographic security. One external dependency. And I deployed the hosting infrastructure on top of that. This isn't a story about asking ChatGPT to write code and hoping for the best. This is what happens when you treat AI like a team — with roles, rules, and accountability. The Problem I Needed to Solve I write MCP servers in Rust. (MCP is a protocol