Cupertino FAQs

Question 1

How does Cupertino help AI agents and prevent 'hallucinations'?

Accepted Answer

Cupertino acts as a local MCP server, providing AI agents direct access to structured, verifiable documentation. This ensures agents reference real, current Apple APIs and Swift proposals, drastically reducing the likelihood of generating incorrect or 'hallucinated' information.

Question 2

What is the Model Context Protocol (MCP) and why is it important for Cupertino?

Accepted Answer

The Model Context Protocol (MCP) is a standard designed for AI agents to interact with external data sources. Cupertino implements an MCP server, allowing AI clients like Claude Desktop to query and receive accurate, context-rich information directly from your locally indexed documentation.

Question 3

What is Cupertino and what does it do?

Accepted Answer

Cupertino is a Swift-based command-line tool that crawls, indexes, and serves Apple's developer documentation (and more) locally. Its primary function is to provide AI agents with accurate, up-to-date documentation via the Model Context Protocol (MCP) and enable offline access for developers.

Question 4

Can I use Cupertino to access documentation offline?

Accepted Answer

Absolutely. One of Cupertino's core benefits is enabling offline development. It creates a local, searchable database of Apple Developer, Swift.org, Swift Evolution, and Swift package documentation, making it fully accessible without an internet connection.

Question 5

What types of documentation can Cupertino fetch and index?

Accepted Answer

Cupertino supports multi-source documentation fetching, including Apple Developer Documentation, Swift.org documentation, Swift Evolution proposals, and Swift package metadata. It also bundles pre-indexed resource catalogs for Swift Packages and Sample Code.

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