Context7 Documentation Lookup

Query up-to-date documentation for programming libraries via Context7 MCP.

Constraints

• •Max 3 calls to context7_resolve-library-id per question
• •Max 3 calls to context7_query-docs per question
• •No core HTML/CSS docs available - use MDN directly if needed

Instructions

For Known Libraries

Use context7_query-docs directly with library IDs from the table below:

context7_query-docs({
  libraryId: "/rails/rails",
  query: "how to set up authentication"
})

For Unknown Libraries

1. •

   Resolve the library ID first:

   code

   context7_resolve-library-id({
     libraryName: "fastapi",
     query: "how to create API endpoints"
   })
   

2. •

   Use the returned ID to query docs:

   code

   context7_query-docs({
     libraryId: "/tiangolo/fastapi",
     query: "how to create API endpoints"
   })
   

Common Library IDs

Use these directly with context7_query-docs:

For unlisted libraries, use context7_resolve-library-id first.

Query Tips

• •Be specific: "how to set up JWT authentication" > "auth"
• •Include context: "React useEffect cleanup function examples" > "hooks"
• •Ask about specific versions if needed: the libraryId can include version like /vercel/next.js/v14.3.0