context7-mcp

upstash/context7

Fetch current library and framework documentation to answer setup, API, and code generation questions.

What is context7-mcp?

Context7 is a documentation lookup skill that retrieves current docs for libraries, frameworks, and APIs instead of relying on training data. Use it when users ask about setup, configuration, code examples, or API references for specific frameworks like React, Next.js, Prisma, Supabase, Vue, and others.

Resolve library names to Context7 library IDs with relevance ranking
Fetch current documentation for libraries and frameworks
Return version-specific documentation when users mention versions
Provide accurate API references and code examples from official sources
Support setup and configuration questions with up-to-date information

How to install context7-mcp

npx skills add https://github.com/upstash/context7 --skill context7-mcp

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How to use context7-mcp

1.When user mentions a library or framework, call resolve-library-id with the library name and user's full question
2.Review the resolution results and select the best match based on name accuracy and benchmark scores
3.Call query-docs with the selected library ID and the user's specific question
4.Incorporate the fetched documentation into your response with code examples and version citations

Use cases

Good for

User asks 'How do I configure Next.js middleware?' – fetch Next.js docs for middleware setup
User requests 'Write a Prisma query for...' – retrieve Prisma API docs with current query syntax
User needs 'What are the Supabase auth methods?' – query Supabase auth documentation
User mentions 'React 19' – resolve and fetch React 19-specific documentation
User asks about framework setup like 'How do I set up Tailwind CSS?' – get current installation and config docs

Who it's for

Developers writing code with specific libraries or frameworks
Engineers setting up or configuring frameworks
Teams needing current API references without relying on outdated training data
Anyone building with React, Vue, Next.js, Prisma, Supabase, Express, Tailwind, or similar tools

context7-mcp FAQ

What libraries and frameworks does Context7 support?

Context7 supports major libraries including React, Vue, Svelte, Next.js, Express, Prisma, Supabase, Tailwind CSS, and many others. Use resolve-library-id to check if a specific library is available.

How does Context7 handle version-specific documentation?

When users mention a version (e.g., 'React 19' or 'Next.js 15'), the resolution step returns version-specific library IDs. Select the version-specific ID to fetch accurate docs for that version.

Should I use Context7 for all code generation questions?

Use Context7 when the question involves specific libraries, frameworks, or APIs. For general programming questions without library context, your training data may be sufficient.

What if resolve-library-id returns multiple matches?

Choose based on exact or closest name match to what the user asked, higher benchmark scores (indicating better documentation quality), and preference for official/primary packages over community forks.

Can I use Context7 for outdated library versions?

Yes, if Context7 has documentation for that version. The resolution step will return available versions; select the one matching the user's request.

Full instructions (SKILL.md)

Source of truth, from upstash/context7.

name: context7-mcp 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.

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