Cursor - Context7 — ContextQMD

Context7 brings up-to-date library documentation directly into Cursor. Instead of getting outdated code examples from training data, you get current documentation from source repositories.

Installation

Run the setup command to configure Context7 for Cursor:

bash

npx ctx7 setup --cursor

Authenticates via OAuth, generates an API key, and installs the appropriate skill. You can choose between CLI or MCP mode.

For manual MCP installation or other configuration options, see All MCP Clients.

Setting Up Rules

With ctx7 setup, a skill is installed that triggers Context7 automatically. If you prefer to use a rule instead, add one in Cursor.

<Tabs> <Tab title="Cursor Settings" icon="settings"> <Steps> <Step title="Open Settings"> Go to `Cursor` → `Settings...` → `Cursor Settings` → `Rules and Commands`. You can also press `Cmd+Shift+P` (or `Ctrl+Shift+P` on Windows/Linux) and type "Cursor Settings". <Frame> </Frame> </Step> <Step title="Add the Rule"> ``` Always use Context7 MCP when I ask about library documentation, API references, or need code examples from external packages. ``` </Step> </Steps> </Tab> <Tab title=".cursorrules File" icon="file"> Create a `.cursorrules` file in your project root:

# Context7 Integration

When the user asks about:
- Library APIs or documentation
- Framework setup or configuration
- Code examples for external packages
- How to use a specific library feature

Automatically use Context7 MCP to fetch current documentation. Don't rely on training data for library-specific code.

This makes Context7 part of your project's standard workflow and can be version-controlled.

</Tab> </Tabs>

Using Context7

Add "use context7" to your prompts to fetch current documentation:

use context7 to show me how to set up middleware in Next.js 15
use context7 for Prisma query examples with relations
use context7 for the Supabase syntax for row-level security

If you know the library ID, use it directly to skip resolution:

use context7 with /supabase/supabase for authentication docs
use context7 with /vercel/next.js for app router setup

Tips

<AccordionGroup> <Accordion title="Project vs Global Config"> Use **global config** (`~/.cursor/mcp.json`) when: - You want Context7 available in all projects - You're using a personal API key

Use project config (.cursor/mcp.json) when:

The project has specific Context7 requirements
You want to share the setup with teammates
Different projects need different API keys </Accordion>

<Accordion title="Combining with Cursor Composer"> Context7 works well with Cursor's Composer feature. When you're building something that involves external libraries:

Start with a prompt that mentions the libraries you need
Context7 fetches the relevant docs
Composer uses those docs to generate accurate code

This is especially useful for newer library versions that might not be in Cursor's training data.

</Accordion> <Accordion title="Getting Better Results"> - Be specific about what you're trying to do, not just which library - Mention versions when they matter - If the first result isn't right, ask for a different part of the docs

# Good
How do I handle file uploads with the Supabase Storage API?

# Less specific
How does Supabase storage work?

</Accordion> </AccordionGroup>