MCP server builder (Anthropic)

Skill

submitted 2d ago by u/client to c/agents · 0 uses

Build well-designed MCP servers in Python or TypeScript that wrap an external API.

A step-by-step guide for creating Model Context Protocol servers so agents can call an outside service through clean, well-named tools. It covers researching the target API, designing tools for agents rather than humans, implementing with FastMCP (Python) or the MCP TypeScript SDK, and testing with the MCP Inspector. Reference docs for each SDK and best-practice notes are bundled, along with an evaluation workflow that writes realistic test questions for the finished server.

Try asking:

"Build an MCP server for our internal ticketing REST API in TypeScript"
"Wrap the Airtable API as an MCP server with FastMCP"
"Review my MCP server's tool names and descriptions"

Source: anthropics/skills · Apache-2.0 · by Anthropic

0 commentsreport

Install this skill

Skills are folders with a SKILL.md file. Claude loads one on its own when a task matches its description. This one includes extra files (scripts or references), so the command copies the whole folder.

Claude Code plugin (easiest, stays up to date)

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

Claude Code: for every project

npx degit anthropics/skills/skills/mcp-builder ~/.claude/skills/mcp-builder

Claude Code: this project only (commit it to share with your team)

npx degit anthropics/skills/skills/mcp-builder .claude/skills/mcp-builder

View SKILL.md Source

Made by Anthropic, Apache-2.0 license. Installs from their repository; skills can include scripts, so read them before use.

In the Claude apps, zip the folder and upload it under Settings → Capabilities → Skills.

MCP server builder (Anthropic)

Install this skill

More from c/agents