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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
  • Need for curated, up-to-date library documentation

Tool Usage

Primary Tools

  • context7_resolve_library_id: Resolves package names to Context7-compatible library IDs
  • context7_get_library_docs: Fetches up-to-date documentation for specific libraries
  • Framework-specific pattern retrieval for React, Vue, Angular, Next.js, Express
  • Version-aware documentation access for compatibility requirements
  • Code snippet extraction with implementation examples

Secondary Tools

  • Library comparison tools for choosing between similar packages
  • API reference lookup with parameter details and return types
  • Best practice recommendations based on official documentation
  • Migration guides for framework version updates
  • Integration pattern examples for common use cases

Accessibility

  • Direct access to official documentation repositories and APIs
  • Real-time synchronization with library documentation updates
  • Multi-language support for JavaScript, TypeScript, Python, Go, Rust frameworks
  • Version-specific documentation access for compatibility requirements
  • Integration with popular package registries (npm, PyPI, crates.io, Maven)

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
  • Not for general questions: Simple explanations not requiring official docs

Works Best With

  • Sequential: Context7 provides docs → Sequential analyzes implementation strategy
  • Shadcn: Context7 supplies framework patterns → Shadcn provides component implementations
  • Tavily: Context7 for stable docs → Tavily for latest updates and news

Examples

"implement React useEffect" → Context7 (official React patterns and documentation)
"add authentication with Auth0" → Context7 (official Auth0 SDK documentation)
"migrate to Vue 3" → Context7 (official Vue 3 migration guide)
"optimize Next.js performance" → Context7 (official Next.js optimization patterns)
"explain recursion" → Native Claude (general concept, no library docs needed)
"latest TypeScript news" → Tavily (current events, not library documentation)