Cupertino, developed by Mihaelamj, is a free MCP server tool built with Swift, designed for Apple platform developers. It acts as a local Apple Documentation crawler, connecting to official Apple Developer resources, Swift Evolution proposals, and Swift.org. This utility provides essential developer tools for offline access and integration with AI clients. Distributed as a notarized universal binary via Homebrew, Cupertino helps developers access crucial documentation without network dependency and enhances AI agent accuracy. It supports a range of AI development environments, making it a valuable addition for those building Swift/iOS applications.

What does Cupertino connect to?

Cupertino connects directly to official Apple Developer documentation, Swift Evolution proposals, and Swift.org. It functions as a specialized local Apple Documentation crawler and an MCP server. This allows developers to access a consolidated source of essential Apple platform information locally. Its primary role is to bring these critical resources offline, making them readily available for development tasks without requiring an active internet connection. The tool is categorized as an MCP server and developer tool.

Core features and tools

Cupertino exposes several callable tools for documentation management and search. These include search_docs for full-text search with BM25 ranking, and list_frameworks to discover available documentation. For server operations, cupertino serve runs the MCP server. Documentation handling involves cupertino fetch to download content and cupertino save to store it locally. Initial setup uses cupertino setup to download the database bundle, and cupertino search provides command-line search capabilities.

Who is it for?

Cupertino targets Apple platform developers who require offline access to documentation or need MCP integration for their development workflows. It is particularly useful for those using AI in Swift/iOS development. The tool supports various AI clients, including Claude Desktop, Cursor, VS Code Copilot, Zed, and opencode, enhancing their ability to work with Apple APIs. This audience benefits from accurate, up-to-date documentation for AI agents. Skip this if you do not develop for Apple platforms or use AI for Swift/iOS development.

How to get started

No credentials are required. The program supports the "stdio" transport protocol for communication with AI clients.

Use cases

• Accessing Apple documentation offline without a network connection.
• Integrating Apple documentation into MCP-compatible development tools.
• Providing AI agents with accurate, up-to-date Apple API documentation to prevent hallucinations.

Cupertino offers Apple platform developers a valuable resource for offline documentation and AI integration. Its ability to crawl and serve local documentation enhances productivity and AI accuracy for Swift/iOS projects. The tool's compatibility with numerous AI clients makes it a versatile addition to modern development environments.