# Context7 Library Docs

Fetches current library docs and code examples for frameworks and APIs.

- Repository: https://github.com/upstash/context7 (64047 stars)
- Category: Engineering
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add upstash/context7 --skill context7-mcp -g -a claude-code -y`
Codex: `npx skills add upstash/context7 --skill context7-mcp -g -a codex -y`
Cursor: `npx skills add upstash/context7 --skill context7-mcp -g -a cursor -y`
Gemini CLI: `npx skills add upstash/context7 --skill context7-mcp -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add upstash/context7`

## Description

This skill should be used when the user asks about libraries, frameworks, API references, or needs code examples. Activates for setup questions, code generation involving libraries, or mentions of specific frameworks like React, Vue, Next.js, Prisma, Supabase, etc.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

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 a Next.js proxy?")
- 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`: What to look up in the library's documentation (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`: What to look up in the library's documentation, scoped to a single concept

If the user's question spans multiple distinct concepts (e.g. routing and auth and caching), make a separate `query-docs` call per concept with the same library ID, unless the question is about how the concepts interact, combined queries dilute ranking and return shallow results for each topic.

### 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

The rest: https://github.com/upstash/context7/blob/HEAD/packages/opencode/skills/context7-mcp/SKILL.md