TL;DR — Ship a tiny server that exposes tools to LLMs using the Model Context Protocol (MCP). This guide shows a minimal, runnable example, explains each part, and covers common pitfalls (ESM imports, transports, adapters). Why this matters MCP lets models call real tools (fetching data, runnin...
Source: [Dev.to](https://dev.to/gaurav101/build-a-tiny-mcp-server-in-javascript-claude-codex-friendly-pbh)