# MCP Builder

> How to build MCP servers in Python or TypeScript

**Subcategory:** MCP  
**License:** Apache-2.0  
**Source:** https://github.com/anthropics/skills/blob/main/skills/mcp-builder/SKILL.md

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## When it is useful

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

## The Catch

How to *build* an MCP server. Not how to wire one that already exists.