# Context7 MCP

Fetches current, version-specific library documentation and code examples through the...

- Repository: https://github.com/upstash/context7 (64047 stars)
- Category: Design
- 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

Fetches current, version-specific library documentation and code examples through the Context7 MCP server. Use whenever the user asks about a library, framework, SDK, API, CLI tool, or cloud service, including API syntax, configuration, setup instructions, version migration, porting code between libraries, platforms, or SQL dialects, CLI usage, and library-specific debugging. Use when generating code that calls a third-party library, and when the user names a version such as Next.js 16 or React 19. Use even for well-known libraries like React, Vue, Next.js, Prisma, Supabase, Express, Tailwind, Django, and Spring Boot, because training data may not reflect recent changes. Prefer this over web search for library documentation. Do not use it for refactoring, debugging, or reviewing code that does not depend on a library or platform API, for general programming concepts, or when the user has already supplied the relevant documentation.

## 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/plugins/agent-plugins/context7/skills/context7-mcp/SKILL.md