io.github.upstash/context7

Official

by upstash · TypeScript

Context7

Up-to-date code docs for any prompt

Access up-to-date code documentation for any programming language or library.

Topics

llmmcpmcp-servervibe-coding

README.md10 KBView on GitHub

Cover

Context7 Platform - Up-to-date Code Docs For Any Prompt

❌ 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LLMs rely on outdated or generic information about the libraries you use.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❌ Code examples are outdated and based on year-old training data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 that don't even exist
❌ Generic answers for old package versions

✅ With Context7

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

txt

Create a Next.js middleware that checks for a valid JWT in cookies
and redirects unauthenticated users to `/login`. use context7

txt

Configure a Cloudflare Worker script to cache
JSON API responses for five minutes. use context7

txt

Show me the Supabase auth API for email/password sign-up.

Context7 fetches up-to-date code examples and documentation right into your LLM's context. No tab-switching, no hallucinated APIs that don't exist, no outdated code generation.

Works in two modes:

CLI + Skills — installs a skill that guides your agent to fetch docs using ctx7 CLI commands (no MCP required)
MCP — registers a Context7 MCP server so your agent can call documentation tools natively

Installation

NOTE

API Key Recommended: Get a free API key at context7.com/dashboard for higher rate limits.

Set up Context7 for your coding agents with a single command. The ctx7 CLI requires Node.js 18 or newer.

bash

npx ctx7 setup

Authenticates via OAuth, generates an API key, and installs the appropriate skill. You can choose between CLI + Skills or MCP mode. Use --cursor, --claude, or --opencode to target a specific agent.

To remove the generated setup later, run npx ctx7 remove. If you globally installed the CLI with npm install -g ctx7, remove that package separately with npm uninstall -g ctx7.

To configure manually, use the Context7 server URL https://mcp.context7.com/mcp with your MCP client and pass your API key via the CONTEXT7_API_KEY header. See the link below for client-specific setup instructions.

Manual Installation / Other Clients →

Important Tips

Use Library Id

If you already know exactly which library you want to use, add its Context7 ID to your prompt. That way, Context7 can skip the library-matching step and directly retrieve docs.

txt

Implement basic authentication with Supabase. use library /supabase/supabase for API and docs.

The slash syntax tells Context7 exactly which library to load docs for.

Specify a Version

To get documentation for a specific library version, just mention the version in your prompt:

txt

How do I set up Next.js 14 middleware? use context7

Context7 will automatically match the appropriate version.

Add a Rule

If you installed via ctx7 setup, a skill is configured automatically that triggers Context7 for library-related questions. To set up a rule manually instead, add one to your coding agent:

Cursor: Cursor Settings > Rules
Claude Code: CLAUDE.md
Or the equivalent in your coding agent

Example rule:

txt

Always use Context7 when I need library/API documentation, code generation, setup or configuration steps without me having to explicitly ask.

Available Tools

CLI Commands

ctx7 library <name> <query>: Searches the Context7 index by library name and returns matching libraries with their IDs.
ctx7 docs <libraryId> <query>: Retrieves documentation for a library using a Context7-compatible library ID (e.g., /mongodb/docs, /vercel/next.js).

MCP Tools

resolve-library-id: Resolves a general library name into a Context7-compatible library ID.
- query (required): The user's question or task (used to rank results by relevance)
- libraryName (required): The name of the library to search for
query-docs: Retrieves documentation for a library using a Context7-compatible library ID.
- libraryId (required): Exact Context7-compatible library ID (e.g., /mongodb/docs, /vercel/next.js)
- query (required): The question or task to get relevant documentation for

Packages

@upstash/context7-mcp - MCP server
ctx7 - CLI
@upstash/context7-sdk - TypeScript SDK
@upstash/context7-tools-ai-sdk - Vercel AI SDK tools
@upstash/context7-pi - pi.dev extension

Disclaimer

1- Context7 projects are community-contributed and while we strive to maintain high quality, we cannot guarantee the accuracy, completeness, or security of all library documentation. Projects listed in Context7 are developed and maintained by their respective owners, not by Context7. If you encounter any suspicious, inappropriate, or potentially harmful content, please use the "Report" button on the project page to notify us immediately. We take all reports seriously and will review flagged content promptly to maintain the integrity and safety of our platform. By using Context7, you acknowledge that you do so at your own discretion and risk.

2- This repository hosts the MCP server’s source code. The supporting components — API backend, parsing engine, and crawling engine — are private and not part of this repository.

🤝 Connect with Us

Stay updated and join our community:

📢 Follow us on X for the latest news and updates
🌐 Visit our Website
💬 Join our Discord Community

📺 Context7 In Media

⭐ Star History

📄 License

MIT

Install

Configuration

Environment variables

CONTEXT7_API_KEYsecret

API key for authentication

claude_desktop_config.json

{
  "mcpServers": {
    "context7": {
      "command": "npx",
      "args": [
        "-y",
        "@upstash/context7-mcp@1.0.31"
      ],
      "env": {
        "CONTEXT7_API_KEY": "<YOUR_CONTEXT7_API_KEY>"
      }
    }
  }
}