🐛 Modern Swift
Use when writing async/await code, enabling strict concurrency, fixing Sendable errors, migrating from completion handlers, managing shared state with actors, or using Task/TaskGroup for concurrency.
npx playbooks add skill johnrogers/claude-swift-engineering --skill modern-swift
About Modern Swift
The Modern Swift skill is used for debugging purposes, specifically when working with asynchronous code in Swift, such as writing async/await code, enabling strict concurrency, and managing shared state with actors. It helps developers fix Sendable errors, migrate from completion handlers, and utilize Task/TaskGroup for concurrency. Developers would reach for this skill when working on Swift projects that involve concurrent programming to ensure their code is correct and efficient.
At 25 words, this compact prompt gives your agent specialized debugging expertise with structured patterns and output formats. Install via CLI or copy the prompt below.
Use Cases
- Systematically diagnosing production errors and crashes
- Tracing memory leaks and performance bottlenecks
- Debugging async race conditions and concurrency issues
- Root-cause analysis with structured logging
Example Prompts
System Prompt (25 words)
Use when writing async/await code, enabling strict concurrency, fixing Sendable errors, migrating from completion handlers, managing shared state with actors, or using Task/TaskGroup for concurrency.
Frequently Asked Questions
What is Modern Swift?
Modern Swift is a free debugging skill for AI coding agents. Use when writing async/await code, enabling strict concurrency, fixing Sendable errors, migrating from completion handlers, managing shared state with actors, or using Task/TaskGroup for concurrency.. It provides a specialized system prompt that configures your agent with debugging expertise.
How do I use Modern Swift with Claude Code?
Run npx playbooks add skill johnrogers/claude-swift-engineering --skill modern-swift in your terminal to install Modern Swift into your Claude Code session. It works immediately after installation.
Which AI coding agents work with Modern Swift?
Modern Swift is compatible with Claude Code, Cursor, GitHub Copilot, Windsurf, OpenClaw, Cline, and any AI agent that supports custom system prompts or .cursorrules files.
Is Modern Swift free to use?
Yes, Modern Swift is completely free and open source. The full source is available on GitHub at https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/modern-swift. You only need a subscription to the AI agent you use it with.
