mcp-builder

Official · Anthropic

Installation

Terminal

git clone --depth 1 https://github.com/anthropics/skills.git /tmp/mcp-builder-src
cp -r /tmp/mcp-builder-src/skills/mcp-builder ~/.claude/skills/mcp-builder

Or .claude/skills/mcp-builder to scope it to one repo.

Summary

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).

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 Dis…

Questions

Claude Code: ~/.claude/skills/mcp-builder. Codex: ~/.agents/skills/mcp-builder. Antigravity: ~/.gemini/config/skills/mcp-builder. Use .claude/skills or .agents/skills inside a repo to scope it to one project.

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