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upstash / context7-docs-lookup

Use Context7 to fetch up-to-date library documentation. Activates when the user asks about libraries, frameworks, API references, or needs code examples — especially for setup questions, code generation, or mentions of specific frameworks like React, Vue, Next.js, Prisma, Supabase, etc.

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Source: https://github.com/upstash/context7/tree/master/plugins/cursor/context7/skills/context7-docs-lookup

Skill Content

---
name: context7-docs-lookup
description: Use Context7 to fetch up-to-date library documentation. Activates when the user asks about libraries, frameworks, API references, or needs code examples — especially for setup questions, code generation, or mentions of specific frameworks like React, Vue, Next.js, Prisma, Supabase, etc.
---

When the user asks about libraries, frameworks, or needs code examples, use Context7 to fetch current documentation instead of relying on training data.

## When to Use This Skill

Activate this skill when the user:

- Asks setup or configuration questions ("How do I configure Next.js middleware?")
- Requests code involving libraries ("Write a Prisma query for...")
- Needs API references ("What are the Supabase auth methods?")
- Mentions specific frameworks (React, Vue, Svelte, Express, Tailwind, etc.)

## How to Fetch Documentation

### Step 1: Resolve the Library ID

Call `resolve-library-id` with:

- `libraryName`: The library name extracted from the user's question
- `query`: The user's full question (improves relevance ranking)

### Step 2: Select the Best Match

From the resolution results, choose based on:

- Exact or closest name match to what the user asked for
- Higher benchmark scores indicate better documentation quality
- If the user mentioned a version (e.g., "React 19"), prefer version-specific IDs

### Step 3: Fetch the Documentation

Call `query-docs` with:

- `libraryId`: The selected Context7 library ID (e.g., `/vercel/next.js`)
- `query`: The user's specific question

### Step 4: Use the Documentation

Incorporate the fetched documentation into your response:

- Answer the user's question using current, accurate information
- Include relevant code examples from the docs
- Cite the library version when relevant

## Guidelines

- **Be specific**: Pass the user's full question as the query for better results
- **Version awareness**: When users mention versions ("Next.js 15", "React 19"), use version-specific library IDs if available from the resolution step
- **Prefer official sources**: When multiple matches exist, prefer official/primary packages over community forks