[Cover]
[Add to Claude] [Add to ChatGPT] [Add to Cursor] [Add to VS Code]
Context7 - Up-to-date Docs for AI Agents
[Website] [NPM Version] [MIT licensed]
[繁體中文] [简体中文] [日本語] [한국어 문서] [Documentación en Español] [Documentation en Français] [Documentação em Português (Brasil)] [Documentazione in italiano] [Dokumentasi Bahasa Indonesia] [Dokumentation auf Deutsch] [Документация на русском языке] [Українська документація] [Türkçe Doküman] [Arabic Documentation] [Tiếng Việt]
❌ 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LLMs rely on outdated or generic information about the libraries you use.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- ❌ Code examples are outdated and based on year-old training data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 gives them to your coding agent.
Context7 fetches up-to-date code examples and documentation right into your coding agent'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 No tab-switching, no hallucinated APIs that don't exist, no outdated code generation.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 22.13 or newer.
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 Authorization: Bearer YOUR_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.
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:
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:
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 forlanguage (optional): The programming language you write in, used to rank code examples in that language first
More Documentation
Packages
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:
📺 Context7 In Media
📄 License
MIT
