anthropics/skills

mcp-builder

A design and implementation guide for MCP servers that expose external services to language models.

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Installs: 109,728
GitHub stars: 173,031

Install this skill

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

Run install commands only after reviewing the repository, SKILL.md, scripts, requested permissions, and recent repository activity.

Skill overview

MCP Builder, in plain English

A design and implementation guide for MCP servers that expose external services to language models.

This skill is a strong fit for developers turning an existing API or internal service into a well-behaved MCP tool surface.Instead of explaining the workflow from scratch each time, you can install it once and give your AI assistant a consistent way to approach the job.

What it helps your AI do

Moves from API research through implementation, testing, and evaluation.
Stresses clear tool names, useful schemas, pagination, and actionable errors.
Covers TypeScript and Python implementations with protocol-aware annotations.

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