/context7

Fetch up-to-date library documentation using the Context7 MCP server. This avoids generating code with deprecated APIs or hallucinated methods.

Instructions

Explicit invocation (/context7 <args>)

If $ARGUMENTS is provided, parse it as a library name and optional query:

1. Call mcp__context7__resolve-library-id with the library name to get the Context7 library ID
2. Call mcp__context7__query-docs with the resolved ID and query to fetch current documentation
3. Summarize the relevant docs and apply them to the current task

Examples:

• /context7 next.js app router — look up Next.js App Router docs
• /context7 react — browse React documentation
• /context7 prisma migrations — look up Prisma migration docs

Proactive use (no explicit invocation)

Use Context7 automatically during normal coding when:

• Implementing with a framework you're unsure about — check current API before generating code
• Version-specific behavior matters — the project pins a specific major version and you need to match its API
• Recently evolved libraries — Next.js, React (server components), SvelteKit, tRPC, Prisma, Drizzle, TanStack, and similar fast-moving projects
• New dependencies — the project has a dependency you haven't seen in this session; look up its API before using it
• User asks to "use context7" — always honor explicit requests

Skip Context7 when:

• Working with stable, well-known APIs (Node.js built-ins, basic Express patterns, standard SQL)
• The user has already provided documentation or examples in the conversation
• Making trivial changes that don't involve library API calls

MCP Tools Reference

Tool	Purpose	Key Parameters
mcp__context7__resolve-library-id	Find a library's Context7 ID	libraryName (required)
mcp__context7__query-docs	Fetch docs for a library	libraryId (required, e.g., /vercel/next.js), query (required)

Workflow

1. Resolve — call resolve-library-id with the library name to get its ID (format: /org/project)
2. Query — call query-docs with the ID and a specific question
3. Apply — use the returned documentation to write accurate, current code