Context7 MCP Server

Overview

Context7 MCP Server is the most popular MCP server in 2026, dominating FastMCP with nearly 2x the views of the #2 server. It focuses on memory management and injecting version-specific code documentation directly into AI prompts.

Features

• Up-to-date documentation: Pulls version-specific documentation and code examples straight from the source
• Vector search: Provides semantic search capabilities for finding relevant documentation
• Context management: Maintains AI conversation context across sessions
• Memory configuration: Configurable settings for context tokens, retention, and summarization
• Session management: Supports multiple concurrent sessions with configurable timeouts
• Automatic summarization: Optional auto-summarization of context for efficient token usage
• Relevance filtering: Adjustable relevance threshold for context retrieval

Configuration Options

Context7 supports extensive configuration through command-line options:

• --max-context-tokens 4000: Maximum context tokens
• --retention-days 30: Data retention period
• --auto-summarization true: Automatic summarization feature
• --relevance-threshold 0.7: Relevance threshold for context retrieval
• --session-timeout 3600: Session timeout duration
• --max-sessions-per-user 10: Maximum sessions per user
• --cleanup-interval 86400: Cleanup interval timing

Use Cases

• Keeping AI assistants updated with latest framework documentation
• Providing version-specific code examples during development
• Maintaining context across long coding sessions
• Semantic search across documentation and codebases
• Enterprise knowledge management for AI applications

Integration

Available as a Visual Studio Code extension and compatible with all major MCP clients including Claude Desktop, Cursor, and other AI development tools.

Pricing

Free and open-source. Enterprise features available through Upstash platform.