Context7 MCP

Server key: context7
Type: stdio
Package: @upstash/context7-mcp@latest

Provides real-time access to library and framework documentation for accurate API usage and best practices.

Capabilities

• Search documentation for any library by name and version.
• Retrieve code examples and usage patterns.
• Look up API references for specific functions or methods.
• Find solutions to errors and exceptions.

Which Agents Use It

Agent	When
Architect	Evaluating libraries, verifying compatibility, searching integration patterns
Software Engineer	API docs, error solutions, best practices for specific features
Code Reviewer	Verifying framework API usage, checking for known vulnerabilities
UI Reviewer	Design system documentation and UI library guidelines
E2E Engineer	Playwright API docs (library ID: /microsoft/playwright.dev)

Configuration

{
  "context7": {
    "type": "stdio",
    "command": "npx",
    "args": ["-y", "@upstash/context7-mcp@latest"]
  }
}

Usage Rules

Always

• Check package.json (or equivalent) for the exact library version before searching.
• Include the version number in search queries for relevance.
• Prioritize official documentation and authoritative sources.

Never

• Search for internal project logic (use codebase search instead).
• Rely on unverified blogs or forums (risk of context pollution).

Authentication

No authentication required. Context7 runs locally via npx as a stdio process.

Official Documentation

• Context7 on GitHub

E2E Engineer Shortcut

The E2E Engineer agent uses the library ID /microsoft/playwright.dev directly with query-docs, skipping the resolve-library-id step for faster Playwright documentation lookups.