axiom-swift-concurrency

Guide Swift strict concurrency patterns including actor isolation, Sendable types, and async/await.

61|3|Updated Feb 14, 2026
One-click install
npx skills add https://github.com/joelhooks/joelclaw --skill axiom-swift-concurrency-joelhooks
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: axiom-swift-concurrency
Source: https://github.com/joelhooks/joelclaw/tree/main/.agents/skills/axiom-swift-concurrency
Command: npx skills add https://github.com/joelhooks/joelclaw --skill axiom-swift-concurrency-joelhooks

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers navigate and implement Swift's modern concurrency features, preventing data races and ensuring thread-safe code execution.

Core Features & Use Cases

  • Concurrency Debugging: Resolve issues related to actor isolation, Sendable types, and data races.
  • Async/Await Implementation: Guide on using async/await for non-blocking operations.
  • Actor Model Guidance: Best practices for structuring code with actors for improved safety and performance.
  • Use Case: Debugging a crash caused by concurrent access to shared mutable state in a Swift application, ensuring all data access is properly isolated and synchronized.

Quick Start

Explain how to use @MainActor to ensure UI updates are performed safely on the main thread.

Frequently Asked Questions about axiom-swift-concurrency

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix data races in Swift when accessing shared mutable state?

Fix Swift data races by implementing actor isolation to synchronize concurrent access to shared mutable state. Actors ensure data access is properly isolated, preventing crashes and maintaining thread-safe code execution without manual locking mechanisms.

How does async/await work for non-blocking operations in Swift?

Async/await in Swift enables non-blocking operations by suspending execution until asynchronous tasks complete. This pattern replaces completion handlers, allowing sequential code structure while maintaining responsive main threads and preventing main thread blocking.

When should I use @MainActor to ensure UI updates are thread-safe?

Use @MainActor to ensure UI updates are thread-safe when performing operations that modify interface elements. It guarantees execution on the main thread, preventing concurrent access violations and ensuring user interface changes happen safely without blocking.

What is the best way to progressively adopt Swift strict concurrency from single-threaded code?

Progressively adopt Swift strict concurrency by incrementally introducing Sendable types, actor isolation, and async/await. This approach allows converting single-threaded code to concurrent execution while addressing data races and actor isolation errors systematically.

Why does Swift require Sendable types for concurrent code execution?

Swift requires Sendable types for concurrent code to guarantee thread-safe data passing across actor boundaries. Sendable conformance verifies types can be safely shared between concurrent execution contexts without introducing data races.

Can I resolve actor isolation errors without rewriting my entire Swift application?

Yes, you can resolve actor isolation errors progressively without a full rewrite. The Skill provides solutions for incremental adoption, allowing you to isolate specific shared mutable state and adopt async/await locally while maintaining existing architecture.