mcp-builder

How to install mcp-builder

npx skills add anthropics/skills --skill mcp-builder -a claude-code

The skills CLI copies this one skill into Claude Code (use -a for another agent). Or read its SKILL.md on GitHub.

What the SKILL.md says

Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks. Creating a high-quality MCP server involves four main phases: API Coverage vs. Workflow Tools: Balance comprehensive API endpoint coverage with specialized workflow tools. Workflow tools can be more convenient for specific tasks, while comprehensive coverage gives agents flexibility to compose operations. Performance varies by client—some clients benefit from code execution that combines basic tools, while others work better with higher-level workflows. When uncertain, prioritize comprehensive API coverage. Tool Naming and Discoverability: Clear, descriptive tool names help agents find the right tools quickly.

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