Install guide and config at curatedmcp.com

Context7 MCP: Stop Feeding Your AI Assistant Outdated Docs

Your AI coding assistant is smart, but it's also stuck in the past. Claude's training data cuts off months ago. When you ask it to build a Next.js app, it might suggest the page router. When you need Supabase help, it defaults to old API patterns. Context7 MCP fixes this by fetching real-time, version-specific documentation and injecting it directly into your AI's context—no hallucinations, no guessing.

What It Does

Context7 is the most-viewed MCP server on FastMCP (11,000+ views) for one reason: it solves a real problem. Instead of relying on your AI's training data, Context7 dynamically fetches current documentation for any library or framework and feeds it into your prompt. You get version-specific docs—Next.js 15, React 19, Vercel's latest APIs—not what the model learned a year ago.

This means your AI assistant can now:

• Generate code that matches your framework's current best practices
• Use APIs that actually exist in the version you're running
• Skip deprecated patterns entirely
• Reference official code examples, not approximations

It supports thousands of libraries: React, Next.js, Vercel, Supabase, Tailwind, and hundreds more. Responses are cached for popular libraries, so performance stays snappy. No API key required.

How to Install

Install Context7 with a single command:

npx -y @upstash/context7-mcp@latest

Then add it to your Claude Desktop config (or Cursor, Windsurf—any MCP client):

{
  "mcpServers": {
    "context7-mcp": {
      "command": "npx -y @upstash/context7-mcp@latest"
    }
  }
}

Restart your client and you're live.

Real-World Use Cases

• Building with the latest framework versions: Ask Claude to scaffold a Next.js 15 app with the App Router. Context7 injects the current docs so Claude generates actual working code, not the patterns it learned from 13.
• API integration without docs tab-switching: Prompting Claude to help integrate Supabase Auth? Context7 fetches their real API docs, so responses include current method names, correct parameters, and actual return types.
• Upgrading dependencies safely: Ask your AI assistant how to migrate from an old React Query version to the new one. With Context7, it gets the actual migration guide and current API surface, not a guess based on outdated training data.

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Full install guides for Claude Desktop, Cursor, Windsurf, and more at CuratedMCP.