Sosumi.ai - Convert Apple Developer docs to AI-readable Markdown

What it does

Sosumi.ai converts Apple Developer documentation—including API references, Human Interface Guidelines, and WWDC session transcripts—into Markdown format optimized for AI consumption. It provides a set of MCP (Model Context Protocol) tools that allow AI assistants to search and fetch Apple documentation as structured Markdown. The tools include searchAppleDocumentation, fetchAppleDocumentation, fetchAppleVideoTranscript, and fetchExternalDocumentation for external Swift-DocC pages. The service can be used via a CLI (npx @nshipster/sosumi), a local server, or integrated into AI coding tools like Claude Code, Codex, and Cursor.

Who it is for

Sosumi.ai is designed for Apple developers who use AI coding assistants (such as Claude, Codex, or Cursor) and need quick access to Apple's official documentation in a format that AI models can easily parse. It is also useful for developers who prefer to browse or search Apple docs from the command line, or who want to integrate documentation fetching into automated workflows.

Why it matters

Apple's developer documentation is extensive but not always easy for AI models to consume directly. By converting it to clean Markdown, Sosumi.ai makes it possible for AI assistants to retrieve and understand relevant API details, design guidelines, and video transcripts without the noise of web layouts. This can speed up development, reduce context switching, and help developers get accurate, up-to-date information from Apple's official sources.

Launch signal

Sosumi.ai was launched as a Show HN on Hacker News, indicating it is a new tool aimed at the developer community. The website is live and functional, with examples for Swift, SwiftUI, Human Interface Guidelines, and WWDC videos. The project is open-source and hosted on npm as @nshipster/sosumi, created by the developer known as _mattt (likely Mattt, known for NSHipster).

Brand and naming

The name "Sosumi" is a playful reference to Apple's history—it was the name of a sound file in early Macs, chosen because it sounded like "so sue me" (a jab at Apple's litigious nature). The .ai domain reinforces the AI-focused use case. The brand is memorable for Apple developers familiar with the reference, and the positioning as a bridge between Apple docs and AI tools is clear and niche.