LLMs rely on outdated or generic information about the libraries you use. You get:

• ❌ Code examples are outdated and based on year-old training data
• ❌ Hallucinated APIs don't even exist
• ❌ Generic answers for old package versions

Context7 MCP pulls up-to-date, version-specific documentation and code examples straight from the source — and places them directly into your prompt.

Add use context7 to your question in Cursor:

How do I use the new Next.js `after` function? use context7

How do I invalidate a query in React Query? use context7

How do I protect a route with NextAuth? use context7

Context7 fetches up-to-date documentation and working code examples right into your LLM’s context.

• 1️⃣ Ask your question naturally
• 2️⃣ Tell the LLM to use context7
• 3️⃣ Get working code answers

No tab-switching, no hallucinated APIs that don't exist, no outdated code generations.

• Node.js >= v18.0.0
• Cursor, Windsurf, Claude Desktop or another MCP Client

Go to: Settings -> Cursor Settings -> MCP -> Add new global MCP server

Paste this into your Cursor ~/.cursor/mcp.json file. See Cursor MCP docs for more info.

{
  "mcpServers": {
    "context7": {
      "command": "npx",
      "args": ["-y", "@upstash/context7-mcp@latest"]
    }
  }
}

Add this to your Windsurf MCP config file. See Windsurf MCP docs for more info.

{
  "mcpServers": {
    "context7": {
      "command": "npx",
      "args": ["-y", "@upstash/context7-mcp@latest"]
    }
  }
}

Add this to your VSCode MCP config file. See VSCode MCP docs for more info.

{
  "servers": {
    "Context7": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@upstash/context7-mcp@latest"]
    }
  }
}

• resolve-library-id: Resolves a general library name into a Context7-compatible library ID.
  • libraryName (optional): Search and rerank results
• get-library-docs: Fetches documentation for a library using a Context7-compatible library ID.
  • context7CompatibleLibraryID (required)
  • topic (optional): Focus the docs on a specific topic (e.g., "routing", "hooks")
  • tokens (optional, default 5000): Max number of tokens to return

Clone the project and install dependencies:

bun i

Build:

bun run build

{
  "mcpServers": {
    "context7": {
      "command": "npx",
      "args": ["tsx", "/path/to/folder/context7-mcp/src/index.ts"]
    }
  }
}

npx -y @modelcontextprotocol/inspector npx @upstash/context7-mcp@latest

MIT