Context7 Documentation Fetching
This skill enables fetching up-to-date, version-specific documentation directly from official sources.
Problem Solved
LLMs have stale training data. When working with Next.js 15, React 19, or any library that evolved since the model's cutoff date, you get:
- Hallucinated APIs that don't exist
- Deprecated patterns
- Outdated code examples
When to Use
- Working with any framework/library (React, Next.js, Vue, Astro, Tailwind, etc.)
- Need current official documentation
- Want accurate code examples
- Encountering unfamiliar APIs
- Starting a new project with latest versions
How to Activate
Simply include "use context7" in your prompt:
use context7 でNext.js 15のApp Routerについて教えて
use context7 React 19の新機能を使ってコンポーネントを作って
Available Tools
1. resolve-library-id
Converts library name to Context7 ID.
Input: "next.js"
Output: "/vercel/next.js/v15.0.0"
2. get-library-docs
Fetches documentation chunks and code examples.
Parameters:
context7_id: Library ID from resolve-library-idtopic(optional): Specific topic to filtertokens(optional): Max tokens (default 5000)
Example Usage
Basic Documentation Fetch
User: use context7 でReact 19のuseActionStateの使い方を教えて
AI: [Calls resolve-library-id with "react"]
[Calls get-library-docs with topic "useActionState"]
[Returns current, accurate documentation]
Framework Setup
User: use context7 で最新のAstro 5プロジェクトをセットアップして
AI: [Fetches current Astro 5 documentation]
[Provides accurate setup commands and configuration]
Supported Libraries
Context7 supports documentation from major frameworks and libraries:
| Category | Libraries |
|---|---|
| Frontend | React, Vue, Svelte, Angular, Solid |
| Meta-frameworks | Next.js, Nuxt, Astro, Remix, SvelteKit |
| Styling | Tailwind CSS, CSS-in-JS libraries |
| State | Redux, Zustand, Jotai, Recoil |
| Testing | Jest, Vitest, Playwright, Cypress |
| Backend | Express, Fastify, Hono, tRPC |
| Database | Prisma, Drizzle, TypeORM |
| Build | Vite, esbuild, webpack, turbopack |
Best Practices
Always use for rapidly evolving frameworks
- Next.js (major updates frequently)
- React (new features in v19)
- Tailwind (v4 breaking changes)
Specify version when needed
use context7 Next.js 15.1の新機能Combine with specific topics
use context7 Prismaのリレーション設定Use for debugging
use context7 このエラーはReact 19で解決されてる？
Integration with TAISUN
Context7 is automatically available via MCP. No additional setup required.
When you include "use context7" or work with framework-specific tasks, the system will:
- Detect the library/framework
- Resolve the Context7 ID
- Fetch relevant documentation
- Provide accurate, current information
Source
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