# mcp-builder

> Claude/Codex skill by [@anthropics](https://omgskills.com/library/anthropics/index.md) · 183k stars · 142k installs · Updated 2026-10-09

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).

Tags: agent-skills

## Install

```sh
git clone https://github.com/anthropics/skills /tmp/skills && ln -s /tmp/skills/skills/mcp-builder ~/.claude/skills/mcp-builder
```

## From README

MCP Server Development Guide Overview Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks. --- Process 🚀 High-Level Workflow Creating a high-quality MCP server involves four main phases: Phase 1: Deep Research and Planning 1.1 Understand Modern MCP Design API Coverage vs. Workflow Tools: Balance comprehensive API endpoint coverage with specialized workflow tools. Workflow tools can be more convenient for specific tasks, while comprehensive coverage gives agents flexibility to compose operations. Performance varies by client—some clients benefit from code execution that combines basic tools, while others work better with higher-level workflows. When uncertain, prioritize comprehensive API coverage. Tool Naming and Discoverability: Clear, descriptive tool names help agents find the right tools quickly.

## Links

- HTML page: https://omgskills.com/library/anthropics/skills/mcp-builder/
- GitHub: https://github.com/anthropics/skills
- Author: [@anthropics](https://omgskills.com/library/anthropics/index.md)

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