# Context7 MCP Server **Purpose**: Official library documentation lookup and framework pattern guidance ## Triggers - Import statements: `import`, `require`, `from`, `use` - Framework keywords: React, Vue, Angular, Next.js, Express, etc. - Library-specific questions about APIs or best practices - Need for official documentation patterns vs generic solutions - Version-specific implementation requirements ## Choose When - **Over WebSearch**: When you need curated, version-specific documentation - **Over native knowledge**: When implementation must follow official patterns - **For frameworks**: React hooks, Vue composition API, Angular services - **For libraries**: Correct API usage, authentication flows, configuration - **For compliance**: When adherence to official standards is mandatory ## Works Best With - **Sequential**: Context7 provides docs → Sequential analyzes implementation strategy - **Magic**: Context7 supplies patterns → Magic generates framework-compliant components ## Examples ``` "implement React useEffect" → Context7 (official React patterns) "add authentication with Auth0" → Context7 (official Auth0 docs) "migrate to Vue 3" → Context7 (official migration guide) "optimize Next.js performance" → Context7 (official optimization patterns) "just explain this function" → Native Claude (no external docs needed) ```