context7 mcp

❌ Without Context7

LLMs rely on outdated or generic information about the libraries you use.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• ❌ Code examples are outdated and based on year-old training data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

✅ With Context7

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 prompt in Cursor:

Create a basic Next.js project with app router. use context7

Create a script to delete the rows where the city is "" given PostgreSQL credentials. use context7

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

• 1️⃣ Write your prompt 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No tab-switching, no hallucinated APIs that don't exist, no outdated code generations.

?️ Getting Started

Requirements

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

Installing via Smithery

To install Context7 MCP Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @upstash/context7-mcp --client claude

Install in Cursor

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

Pasting the following configuration into your Cursor ~/.cursor/mcp.json file is the recommended approach. See Cursor MCP docs for more info.

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

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

{
  "mcpServers": {
    "context7": {
      "command": "deno",
      "args": ["run", "--allow-net", "npm:@upstash/context7-mcp"]
    }
  }
}

Install in Windsurf

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"]
    }
  }
}

Install in VSCode

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"]
    }
  }
}

Install in Claude Code

Run this command. See Claude Code MCP docs for more info.

claude mcp add context7 -- npx -y @upstash/context7-mcp@latest

Install in Claude Desktop

Add this to your Claude Desktop claude_desktop_config.json file. See Claude Desktop MCP docs for more info.

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

Available Tools

• 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

Development

Clone the project and install dependencies:

bun i

Build:

bun run build

Local Configuration Example

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

Testing with MCP Inspector

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

Troubleshooting

ERR_MODULE_NOT_FOUND

If you see this error, try using bunx instead of npx.

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

This often resolves module resolution issues, especially in environments where npx does not properly install or resolve packages.

Context7 in media

• Better Stack: "Free Tool Makes Cursor 10x Smarter"

License

MIT