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MCP Server Overview

Context7 MCP Server is a Model Context Protocol (MCP) server that provides LLMs with up-to-date, version-specific documentation and code examples for any programming library or framework.

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What is Context7 MCP?

Context7 MCP pulls documentation straight from the source and places it directly into your LLM’s context. This eliminates common issues with AI coding assistants:
  • Outdated code examples based on year-old training data
  • Hallucinated APIs that don’t exist
  • Generic answers for old package versions

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Architecture

Context7 MCP Server is built on the Model Context Protocol and supports two transport modes:

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Transport Modes

Local (stdio)

Runs locally via npx using standard input/output communication.Best for:
  • Single-user environments
  • Maximum privacy
  • Offline compatibility (after initial install)

Remote (HTTP)

Connects to https://mcp.context7.com/mcp via HTTP transport.Best for:
  • Teams and organizations
  • No local installation required
  • Always up-to-date

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Server Components

The MCP server consists of several key components: Transport Layer
  • stdio: Standard input/output for local connections
  • HTTP: RESTful HTTP server for remote connections
Tool Registry
  • Registers and manages available MCP tools
  • Handles tool invocations from LLM clients
Context7 API
  • Backend service for library search and documentation retrieval
  • Handles intelligent reranking and context generation

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Key Features

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Version-Specific Documentation

Specify exact library versions in your prompts: 
How do I set up Next.js 14 middleware? use context7
Context7 automatically matches and retrieves documentation for the requested version.

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Library Resolution

The server intelligently resolves library names to Context7-compatible IDs:
  • Search for libraries by name
  • Rank results by relevance, reputation, and quality
  • Return detailed metadata including versions, code snippets, and benchmark scores

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Smart Context Retrieval

Retrieves documentation using natural language queries:
  • Intelligent reranking of documentation sections
  • Focus on relevant code examples
  • Include API references and configuration options

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Authentication

Context7 MCP Server supports two authentication methods:

API Key

Traditional API key authentication for both local and remote connections.Get your free API key at context7.com/dashboard

OAuth 2.0

OAuth 2.0 authentication for remote HTTP connections.Implements the MCP OAuth specification

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Rate Limits

Without API Key:
  • Limited requests per hour
  • Suitable for testing and evaluation
With Free API Key:
  • Higher rate limits
  • Recommended for regular use
Paid Plans:

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Supported Libraries

Context7 supports 1000+ libraries across all major programming languages and frameworks:
  • JavaScript/TypeScript (Next.js, React, Express, etc.)
  • Python (Django, FastAPI, Pandas, etc.)
  • Go, Rust, Java, C#, and more
  • Cloud platforms (AWS, Azure, GCP, Cloudflare)
  • Databases (MongoDB, PostgreSQL, Redis, etc.)
Browse the full library catalog at context7.com/libraries

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Privacy & Security

Never include sensitive information (API keys, passwords, credentials, personal data, or proprietary code) in your queries. All queries are sent to the Context7 API for processing.
  • Queries are processed server-side for intelligent reranking
  • API keys are encrypted in transit
  • OAuth tokens follow industry-standard security practices
  • See Privacy Policy for details

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Next Steps

Cursor Setup

Install Context7 in Cursor IDE

Claude Code Setup

Install Context7 in Claude Code

Configuration

Configure API keys and options

Tools Reference

Explore available MCP tools

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