Agent workflowApache-2.0

MCP builder

by Anthropic (opens in a new tab) anthropics/skills

A phased guide to building good MCP servers in Python or TypeScript, with evaluations.

Installation

Skills CLI

Skills CLI command
npx skills@latest add anthropics/skills --skill mcp-builder

Requires Node.js and npm. Choose your agents in the installer; add -g for a global installation.

Fieldbook review

Reviewed 27 Sept 2026

Research, build, review, then evaluate. Loads protocol docs from the web as it goes.

  • LicenceApache-2.0
  • FrontmatterValid name and description
  • Risky patternsNone found
  • Size237 lines
  • Last checked27 Sept 2026 · 0f4592dcb53cf2b5d6b7febee6b4152018b565551a1c29e3c612f57b218ab295

What it can touch

  • Edits code

    Changes files in your project.

  • Runs commands

    Runs shell commands such as tests, builds or installs.

  • Network

    Reaches external services or the web.

Read the source

Fieldbook links to the original instead of copying it, so you always read the version you install.

skills/mcp-builder/SKILL.md on GitHub (opens in a new tab)