Build Your First MCP Server in Under 100 Lines of JavaScript

Dev.to AI
Generative AI AI Business

What is MCP? Model Context Protocol (MCP) is an open standard by Anthropic that lets AI assistants like Claude connect to external tools, data sources, and services. Think of it as a USB-C port for AI - one standard connector that works with any compatible device. Before MCP, every AI integration was bespoke. Want Claude to query your database? Custom plugin. Want it to call your API? Another custom integration. MCP standardizes all of this with a clean protocol that any AI client can speak.