mcp-builder

Official source

Build high-quality MCP (Model Context Protocol) servers in Python (FastMCP) or Node/TypeScript that let LLMs use external services through well-designed tools.

Source: Anthropic

View source
Claude.ai · CompatibleClaude Code · CompatibleDevelopment

At a glance

Verified source
Best for
Designing an MCP server to expose an external API or service to agents
Works with
Claude.ai · Claude Code
Outcome
Choosing tool granularity (workflow tools vs full API coverage) and clear naming
Source
anthropics/skills
OverviewUse casesHow it worksInstall and useSimilar

01 / Understand the skill

About mcp-builder

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).

02 / Confirm the fit

Use mcp-builder when you need to

  • Designing an MCP server to expose an external API or service to agents
  • Choosing tool granularity (workflow tools vs full API coverage) and clear naming
  • Following MCP protocol/transport best practices (stdio, streamable HTTP)

03 / See the workflow

How mcp-builder works

  1. 01Install: npx skills add https://github.com/anthropics/skills --skill mcp-builder
  2. 02Try: "Build an MCP server in TypeScript wrapping the GitHub issues API."
  3. 03Get: a structured server with well-named tools, error handling, and transport setup

Check before installing

Compatible platforms

Claude.ai · Claude Code

Best fit

Designing an MCP server to expose an external API or service to agents

Review the source instructions if the required output differs from the formats described above.

Install and use

Compatible with Claude.ai and Claude Code · Published by Anthropic

Ready to add mcp-builder?

Use the published instructions below, then provide the required input and describe the result you need.

General instructions · Claude.ai · Claude Code

npx skills add https://github.com/anthropics/skills --skill mcp-builder

Review the source repository and license before installing third-party skills.

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