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swift-concurrency-expert

Review Swift 6.2+ code for concurrency issues and apply actor isolation fixes.

Updated Apr 4, 2026
Search Tags:#concurrency#swift#async#review#actor#sendable
One-click install
npx skills add https://github.com/curtislmartin/daily-ascent-engineering --skill swift-concurrency-expert-curtislmartin
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-concurrency-expert
Source: https://github.com/curtislmartin/daily-ascent-engineering/tree/main/skills_repo/swift-concurrency-expert
Command: npx skills add https://github.com/curtislmartin/daily-ascent-engineering --skill swift-concurrency-expert-curtislmartin

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Developers struggle with data‑race errors, actor‑isolation mismatches, and Sendable violations in Swift 6.2+ codebases, leading to compiler failures and unstable runtime behavior.

Core Features & Use Cases

  • Triage Guidance: Captures compiler diagnostics, checks project concurrency settings, and identifies problematic symbols.
  • Targeted Fixes: Applies minimal, safe annotations such as @MainActor, actor, @concurrent, and Sendable conformances.
  • Reference Support: Leverages built‑in reference documents for Approachable Concurrency, Swift 6.2 changes, and SwiftUI concurrency patterns.
  • Use Case Example: Review a new feature file that triggers a “non‑isolated async call” error and automatically suggest the correct actor isolation.

Quick Start

Ask the skill to review the Swift file ContentView.swift for concurrency issues.

Frequently Asked Questions about swift-concurrency-expert

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

FAQPage Schema
How do I fix Swift concurrency data race errors in my project?▼

To fix Swift concurrency data race errors, review your code to identify actor isolation mismatches and Sendable violations, then apply minimal annotations like @MainActor or actor conformances to ensure data race safety.

What is the best way to resolve Sendable violations in Swift 6.2?▼

Resolving Sendable violations in Swift 6.2 involves analyzing compiler diagnostics to identify problematic symbols and applying targeted Sendable conformances or appropriate actor isolation to correct unsafe async behavior.

How do I fix non-isolated async call compiler errors in SwiftUI?▼

Fix non-isolated async call compiler errors in SwiftUI by analyzing compiler diagnostics and applying correct actor isolation attributes, such as @MainActor, to ensure safe execution within the concurrency model.

Can this review Swift 6.2 project concurrency settings for actor isolation mismatches?▼

Yes, it reviews Swift 6.2+ project concurrency settings and code modifications to identify actor isolation mismatches and ensure correct async behavior and data race safety across your codebase.

Why does my Swift code trigger a non-isolated async call error?▼

Your Swift code triggers a non-isolated async call error when it attempts to execute async operations without proper actor isolation or @concurrent attributes, causing compiler failures due to unsafe concurrent access.

When should I use @MainActor versus @concurrent for Swift async behavior?▼

Use @MainActor for UI-bound execution and @concurrent for off-main-thread tasks; analyzing compiler diagnostics helps determine the correct attribute to apply for resolving data race safety and isolation issues.

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