MCP Builder Skill for Claude by Anthropic

When the agent reaches for it

The agent keeps every installed skill's description in view and loads the full instructions when a request matches. This is the description it reads:

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).

What the instructions cover

The sections of its SKILL.md, in order.

Overview
🚀 High-Level Workflow
📚 Documentation Library

What ships with it

Besides SKILL.md, the folder carries these. The agent opens them only when a step in the instructions calls for one.

reference/ 4 files · 81 KB
scripts/ 4 files · 18 KB

Install the MCP builder skill

In Claude Code, run this in a session. It comes from the publisher's own instructions.

Claude Code

/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills

License: Apache-2.0.

Questions people ask

How do I install the MCP builder skill?

In Claude Code, run /plugin marketplace add anthropics/skills, then /plugin install example-skills@anthropic-agent-skills.

When does the agent use the MCP builder skill?

When a request matches its description. The agent keeps only the name and description of each installed skill in view, and reads the full instructions when a task fits. You can also ask for it by name.