Model Context Protocol (MCP) is a standard by Anthropic that connects AI applications to external services and data sources through specialized servers. The tutorial demonstrates setting up an MCP server (Context7) with OpenAI Codex to access up-to-date documentation for frameworks and libraries. Configuration involves creating a TOML file with API credentials, enabling the AI to query current documentation and generate more accurate code. Currently limited to local Codex instances on Mac, with hundreds of ready-made MCP servers available for services like Google Drive, Slack, and Supabase.
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