$mcp-builder

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools.

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Tags
#mcp#servers#integration#fastmcp#typescript#python
Version
1.0.0
Category
Development
Source
repo: anthropics/skills
path: skills/mcp-builder
Install
clawd add anthropics/mcp-builder

Overview

The mcp-builder skill provides a comprehensive framework for developing MCP (Model Context Protocol) servers that enable language models to interact seamlessly with external services. Whether you're building servers in Python using FastMCP or in Node/TypeScript using the MCP SDK, this guide ensures your implementations are high-quality and production-ready.

Key Phases

The mcp-builder skill covers development across four main phases:

  1. Research and Planning - Define your MCP server's purpose and capabilities
  2. Implementation - Build your MCP server using FastMCP or MCP SDK
  3. Review and Testing - Ensure quality and reliability of your tools
  4. Evaluation Creation - Develop comprehensive evaluation metrics

Best Practices

This skill emphasizes:

  • Balanced API Coverage - Thoughtful selection of tools and capabilities
  • Clear Tool Naming - Intuitive and descriptive function names
  • Actionable Error Messaging - Help language models understand and resolve issues
  • Real-World Integration - Enable models to accomplish practical tasks through external service integration

Supported Technologies

  • Python: FastMCP framework
  • Node/TypeScript: Official MCP SDK

Use this skill when building MCP servers to integrate external APIs or services that language models can leverage.

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