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swift-concurrency-expert

Resolve Swift Concurrency diagnostics and data-race warnings with actor isolation and async/await.

Updated Jun 2, 2026
Search Tags:#concurrency#swift#code-review#async-await#actor#sendable#mainactor
One-click install
npx skills add https://github.com/PicoMLX/SwiftSQLite --skill swift-concurrency-expert-picomlx
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swift-concurrency-expert
Source: https://github.com/PicoMLX/SwiftSQLite/tree/main/.agents/skills/swift-concurrency-expert
Command: npx skills add https://github.com/PicoMLX/SwiftSQLite --skill swift-concurrency-expert-picomlx

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill resolves complex Swift Concurrency compiler errors and data-race warnings, ensuring your codebase is thread-safe and compliant with modern Swift 6.2+ standards.

Core Features & Use Cases

  • Concurrency Remediation: Automatically identifies and fixes actor isolation issues, Sendable conformance errors, and main-actor violations.
  • Modernization: Migrates legacy completion handlers to async/await patterns and applies @MainActor annotations for UI-bound code.
  • Use Case: When your project build fails due to strict concurrency checking, use this Skill to triage the diagnostics and apply the smallest, safest code changes to restore build stability.

Quick Start

Use the swift-concurrency-expert skill to analyze the current file for concurrency diagnostics and apply the necessary fixes to resolve all data race warnings.

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 warnings in my project?▼

Fix Swift concurrency data race warnings by applying actor isolation, adding Sendable conformance, and using async/await patterns to ensure thread-safe state management and compiler-verified memory safety.

Why does my Swift build fail with strict concurrency checking enabled?▼

Swift builds fail strict concurrency checks due to actor isolation violations, missing Sendable conformance, and main-actor synchronization errors. Triage compiler diagnostics to apply the smallest, safest code changes restoring build stability.

How do I migrate legacy completion handlers to async/await in Swift?▼

Migrate legacy completion handlers to modern async/await patterns by replacing nested closure callbacks with structured asynchronous functions, applying @MainActor annotations for UI-bound code synchronization.

When do I need to use @MainActor for UI-bound code in Swift?▼

Use @MainActor for UI-bound code when background task offloading requires thread-safe main-actor synchronization. It ensures compiler-verified memory safety by isolating UI state updates to the main thread.

Does this approach support Swift 6.2+ strict concurrency compliance?▼

Yes, this approach targets Swift 6.2+ codebases requiring strict concurrency compliance. It resolves complex compiler diagnostics by enforcing actor isolation and Sendable conformance for asynchronous Swift applications.

What is the best way to ensure thread-safe state management in Swift?▼

Ensure thread-safe state management in Swift by applying actor isolation to encapsulate mutable state, conforming types to Sendable, and utilizing async/await for safe background task offloading.

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