This is for building Model Context Protocol servers from scratch, not using existing ones. You'd reach for it when you need to wrap external APIs with authentication, manage stateful connections like databases or WebSockets, or create tool bundles that share configuration and security boundaries. The skill includes production patterns for input validation with Zod schemas, rate limiting implementations, proper secret management, and structured error handling that maps service errors to MCP error codes. It's opinionated about when not to use MCP too: skip it for pure domain expertise, simple file operations, or stateless local tasks where Claude's built-in tools or a basic script would suffice.
npx skills add https://github.com/erichowens/some_claude_skills --skill mcp-creator