Cupertino is a Swift-based tool designed to crawl and index Apple’s developer documentation for AI agents. It efficiently fetches resources from various Apple sources, including developer documentation, Human Interface Guidelines, and Swift Evolution proposals. With offline access to over 285,000 documents, it supports deterministic searches and ensures that AI agents have accurate, up-to-date information without internet dependency. Users can easily set up the tool via a one-command install or build from source, allowing for flexibility based on preferences.

The application features a robust SQLite FTS5 database, enabling fast and efficient searches across indexed content. Cupertino also supports the Model Context Protocol (MCP), allowing seamless integration with AI agents like Claude. Its intelligent crawling capabilities and structured documentation make it an essential resource for developers looking to enhance their workflow with reliable information. With its user-friendly command-line interface, Cupertino streamlines the process of accessing and managing Apple’s extensive documentation.