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AI Primer

mcp-builder

anthropicsby anthropics16 days ago130.3k

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).

Install

npx skills add https://github.com/anthropics/skills --skill mcp-builder
Show step-by-step
  1. 1

    Open your terminal

    • Mac: Press ⌘ Space, type "Terminal", press Enter
    • Windows: Press Win R, type "cmd", press Enter
  2. 2

    Paste the command above and press Enter

    Use the Copy command button, then paste in your terminal (Mac: ⌘V, Windows: Ctrl V).

  3. 3

    Restart Claude Code

    Close and reopen Claude Code, or start a new session, so it picks up the new skill.

Where it lives
~/.claude/skills/anthropics--skills--skills--mcp-builder/
├── SKILL.md
└── ... (skill resource files)
View on GitHub

Always review skill code before installing. Third-party skills may contain scripts that run on your machine.

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