The Context7 MCP server, developed by Upstash, provides AI agents with access to up-to-date documentation and code examples for programming libraries and frameworks. Trusted by teams at companies like OpenAI, Netflix, Vercel, and Google, Context7 maintains a massive index of over 118,000 libraries to ensure AI coding assistants always work with current, accurate documentation.
The server exposes two complementary tools that work together in a streamlined workflow. The first tool, resolve-library-id, translates a plain-language library or package name into a Context7-compatible identifier, ranking matches by name similarity, source reputation, documentation coverage, and benchmark score.
The second tool, query-docs, retrieves targeted documentation and code snippets for a specific library concept using that identifier. Together, they eliminate outdated or hallucinated code by grounding AI responses in the latest official documentation, making it ideal for use in agents like Claude, Cursor, and Codex.
1. Resolving the correct library reference When you're unsure of the exact package name or need to find the authoritative source for a library, the resolve tool identifies the best-matching Context7 ID.
Find the Context7 library ID for the Next.js framework by Vercel so I can pull its documentation.2. Retrieving up-to-date framework documentation Fetch current documentation for a specific feature to avoid relying on the model's outdated training data.
Get the latest Next.js App Router documentation and show me how to set up dynamic route segments with the /vercel/next.js library.3. Getting accurate code examples for implementation Pull real, working code snippets scoped to a single concept to accelerate development.
Show me current code examples for setting up authentication with JWT in Express.js using the official docs.4. Version-specific documentation lookup Query documentation for a particular version of a library to match your project's dependencies.
Retrieve the useEffect cleanup function documentation from React version 18 specifically.5. Comparing libraries before adoption Use the resolve tool to compare multiple matching libraries by reputation, snippet coverage, and benchmark score before committing.
Search for available ORM libraries for TypeScript and tell me which one has the best documentation coverage and source reputation.6. Debugging with authoritative guidance Combine both tools to diagnose issues by consulting the official documentation for a specific behavior.
I'm getting a hydration error in Next.js. Resolve the library and find the official docs on server-side rendering and hydration mismatches.7. Learning a new library from scratch Fetch structured documentation to onboard quickly onto an unfamiliar technology.
I'm new to Supabase. Find the library and get me the documentation on setting up row-level security policies.8. Exploring integration between two concepts Query how two features of a library interact within a single, focused request.
Using the Prisma docs, explain how migrations and the schema definition work together in a PostgreSQL setup.