How does it help with Swift 6 migration?

The skill includes specific patterns for Sendable conformance, solving actor isolation errors, and implementing strict concurrency checks required for Swift 6.

Can it help fix app freezes?

Yes, it is designed to identify synchronous work happening on the @MainActor and suggest background dispatching or async patterns to keep the UI responsive.

What does the Axiom iOS Concurrency skill do?

It provides specialized guidance for writing modern Swift code involving actors, async/await, and multi-threading, specifically optimized for iOS, iPadOS, watchOS, and tvOS.

Does it support the latest iOS 18 APIs?

Yes, it includes implementation details for modern synchronization primitives like Mutex (iOS 18+) and OSAllocatedUnfairLock (iOS 16+).

When should I use this instead of a performance skill?

You should use this skill first whenever an app feels slow or freezes, as concurrency-related main-thread blocking is the most common cause of UI performance issues.

Axiom iOS Concurrency

Name: Axiom iOS Concurrency
Author: CharlesWiltgen

byCharlesWiltgen

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233

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Mobile Development

Guides the implementation of safe, high-performance concurrent code using Swift 6 actors, async/await, and modern xOS synchronization patterns.

Axiom iOS Concurrency is a specialized routing skill for Claude Code that streamlines the development of asynchronous applications across Apple's platforms. It serves as a domain-specific expert for Swift 6 concurrency, helping developers navigate complex challenges like data races, actor isolation, and @MainActor synchronization. Whether you are migrating legacy code to async/await, troubleshooting UI freezes caused by main-thread blocking, or implementing low-level locks with OSAllocatedUnfairLock, this skill provides the precise architectural patterns and diagnostic logic required to build responsive, thread-safe, and modern mobile applications.

Key Features

01Swift 6 strict concurrency migration and Sendable conformance

02233 GitHub stars

03Memory ownership control via borrowing and consuming modifiers

04Low-level synchronization with Mutex and Atomic types

05Data race detection and actor-based state management

06MainActor isolation and UI responsiveness optimization

Use Cases

01Diagnosing and fixing application freezes and main-thread blocking

02Resolving complex data race and actor isolation errors in Swift 6

03Migrating legacy GCD and completion handler code to async/await

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add charleswiltgen/axiom axiom-ios-concurrency

For use in Claude.ai and ChatGPT

Download Skill