SwiftData Agent Skill for AI Coding Assistants

An agent skill that helps AI coding assistants like Claude Code, Codex, Cursor, and Gemini write better SwiftData code. Covers `@Model`, `@Query`, predicates, indexes, migrations, relationships, iCloud sync, and more, targeting the mistakes LLMs actually make.

Also available:

• SwiftUI Pro
• Swift Concurrency Pro
• Swift Testing Pro

Find more agent skills for Swift and Apple platform development at [Swift Agent Skills](https://github.com/twostraws/Swift-Agent-Skills).

Installing SwiftData Pro

You can install this skill into Claude Code, Codex, Gemini, Cursor, and more by using `npx`:

npx skills add https://github.com/twostraws/swiftdata-agent-skill --skill swiftdata-pro

If you get the error `npx: command not found`, it means you don’t currently have Node installed. You need to run this command to install Node through Homebrew:

brew install node

And if *that* fails it usually means you need to [install Homebrew](https://brew.sh) first.

When using `npx`, you can select exactly which agents you want to use during the installation. You can also select whether the skill should be installed just for one project, or whether it should be made available for a