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swift-concurrency

Identify and resolve Swift concurrency issues across async/await, actors, and Sendable conformance.

1|1|Updated Jan 29, 2026
Search Tags:#migration#concurrency#swift#async-await#actors#sendable
One-click install
npx skills add https://github.com/KKodiac/agent-skills --skill swift-concurrency-kkodiac
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-concurrency
Source: https://github.com/KKodiac/agent-skills/tree/main/skills/swift-concurrency
Command: npx skills add https://github.com/KKodiac/agent-skills --skill swift-concurrency-kkodiac

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Swift Concurrency issues are identified and resolved by applying structured concurrency, actor isolation, and Sendable conformance.

Core Features & Use Cases

  • Guidance on async/await usage, actors, Task Groups, and Sendable conformance
  • Migration strategies for moving codebases to Swift 6 and adopting strict concurrency
  • Debugging and performance patterns for concurrency-heavy code, including testing and instrumentation

Quick Start

Refactor a sample Swift project to adopt structured concurrency and safe actor isolation in under an hour

Frequently Asked Questions about swift-concurrency

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

FAQPage Schema
How do I migrate my codebase to Swift 6 strict concurrency safely?▼

Migrate to Swift 6 strict concurrency by applying structured concurrency, actor isolation, and Sendable conformance. This identifies and resolves async/await challenges while ensuring safe cross-isolation data transfer across the codebase.

What is the best way to handle Sendable conformance in Swift concurrency?▼

Handle Sendable conformance by applying structured concurrency and actor isolation to ensure safe cross-isolation data transfer. Verify conformance throughout your codebase to prevent data races when refactoring existing async/await patterns.

Why does my Swift actor isolation code cause data transfer issues across boundaries?▼

Actor isolation data transfer issues occur when types lack proper Sendable conformance. Resolve these concurrency challenges by applying verification steps and ensuring safe cross-isolation data transfer practices across your Swift project.

How do I debug and test async/await cancellation handling in a Swift project?▼

Debug and test async/await cancellation handling by using performance patterns, instrumentation, and verification steps designed for concurrency-heavy code. This ensures structured concurrency tasks cancel safely and predictably during execution.

Does this approach work for refactoring an existing Swift project to use structured concurrency?▼

Yes, you can refactor an existing Swift project to adopt structured concurrency and safe actor isolation. The process guides applying async/await, Task Groups, and MainActor usage to transition real-world codebases effectively.

When should I use MainActor isolation instead of a custom actor in Swift?▼

Use MainActor isolation for UI-bound tasks and custom actors for protecting independent shared mutable state. Apply structured concurrency best practices to determine the correct boundary and ensure safe data transfer across isolations.

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