Build Your First MCP Server in 20 Minutes, Give Any LLM Access to Your App's Data

I Built an MCP Server in 20 Minutes. Now Claude, GPT, and Gemini All Talk to My Database You've got an app. You've got data. You want Claude (or GPT, or Gemini) to actually use that data — not through copy-pasting context, not through janky API wrappers, but through a clean protocol that any AI client can connect to. That's exactly what MCP (Model Context Protocol) does. If you haven't heard of it yet: MCP is an open standard created by Anthropic that lets AI models connect to external tools, databases, and APIs through a universal interface. Think of it like USB-C for AI — one protocol, every model, any tool. In this tutorial, I'll walk you through building a real MCP server in TypeScript that exposes your PostgreSQL database to any LLM. By the end, you'll have a working server that Claude Desktop, Cursor, or any MCP-compatible client can connect to. TL;DR: Install @modelcontextprotocol/sdk , define your tools, run the server. Any MCP client connects instantly. Skip to Quick Start Tab