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In this video, I walk you through building a custom MCP (Model Context Protocol) server from scratch using Python. 00:00 Intro 01:03 The foundation 04:31 Project Structure 05:53 MCP Tools 07:29 MCP Server 11:43 MCP Client - Claude Desktop We build a real-world healthcare patient records server with 4 production-style tools — patient risk scoring, readmission insights, schema discovery, and natural language database querying. By the end, you'll understand exactly how to expose your own APIs and databases to AI agents using MCP.