Token-efficient library API documentation fetcher using Context7 MCP with 77% token savings.
Fetches code examples, API references, and usage patterns for published libraries (React,
Next.js, Prisma, etc). Use when users ask "how do I use X library", need code examples,
want API syntax, or are learning a framework's official API. Triggers: "Show me React hooks",
"Prisma query syntax", "Next.js routing API". NOT for exploring repo internals/source code
(use researching-with-deepwiki) or local files.