Sosumi

If you're building anything on Apple platforms and need to grab API docs, HIG pages, or WWDC transcripts as clean Markdown, this is the fastest route. It mirrors developer.apple.com under a different domain that returns structured text instead of HTML, so you can search for SwiftUI views or fetch Foundation docs without scraping. The MCP integration gives you four clean tools for search and fetch operations. Works with external Swift-DocC sites too, like Swift Package Index pages. The only catch is you need to know roughly what you're looking for, but the search tool handles that. Beats copying and pasting from Safari.

skills.sh installs: 2.2K
GitHub stars: 485
last updated: Jul 14, 2026

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Install

$ npx -y skills add nshipster/sosumi.ai --skill sosumi --agent claude-code

Installs into .claude/skills of the current project.

Files

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Sosumi Skill

Use this skill to reliably fetch Apple docs as Markdown when coding agents need precise API details.

When to Use

Use Sosumi when the request involves any of the following:

Apple platform APIs (Swift, SwiftUI, UIKit, AppKit, Foundation, etc.)
API signatures, availability, parameter behavior, or return semantics
Human Interface Guidelines questions
WWDC session transcript lookup
External Swift-DocC documentation (for example, GitHub Pages or Swift Package Index hosts)

Core Workflow

If you already have a developer.apple.com URL, replace the host with sosumi.ai and keep the same path.
If you do not know the exact page path, search first, then fetch the best match.
Prefer specific symbol pages instead of broad top-level pages when answering implementation questions.