README

!Cover

   

 Context7 - Up-to-date Docs for AI Agents

  

      ![Documentação em Português (Brasil)-purple)](./i18n/README.pt-BR.md)        

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LLMs rely on outdated or generic information about the libraries you use.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- ❌ Code examples are outdated and based on year-old training data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

txt
Create a Next.js proxy 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 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 No tab-switching, no hallucinated APIs that don't exist, no outdated code generation.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.

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 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.

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 a Next.js 16 proxy? 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: C

Top issues

Discussions

Latest release

Patch Changes

- fc65a5a: Keep the teamspace library-filter notice in resolve-library-id results when no libraries match.