How to build your first MCP server with Node.js

The Model Context Protocol (MCP) offers a transformative approach for AI models, enabling them to execute real actions by interacting directly with user tools, such as databases and APIs, rather than merely suggesting actions. This tutorial guides users through creating an MCP server with Node.js, initially using a simple file-based notes system to introduce core concepts before transitioning to a MySQL-backed implementation for more structured data management. The tutorial covers setting up a server that can handle creating, reading, and listing notes, and demonstrates how to test the server using MCP-compatible clients like Claude Desktop. It emphasizes designing reliable MCP tools with clear descriptions and single responsibilities, while ensuring execution safety through parameterized queries. The tutorial also highlights the potential of MCP for integrating AI models with complex systems, enhancing their ability to automate workflows and interact with APIs, thus expanding the practical applications of AI in real-world environments.