swift-concurrency-expert

---
name: swift-concurrency-expert
description: "Use when working with swift concurrency review/fix: compiler errors, Sendable, isolation, remediation from steipete/agent-scripts."
source: https://github.com/steipete/agent-scripts/tree/main/skills/swift-concurrency-expert
generated: 2026-05-27T20:56:37.390Z
category: language
audience: engineers
---

## When to use

- Using the swift-concurrency-expert skill's upstream workflow, guardrails, and local-tool assumptions.
- Auditing commands or operational steps before changing swift concurrency expert behavior.
- Needing a compact agent reference for swift concurrency review/fix: compiler errors, Sendable, isolation, remediation.

## Key concepts

### Overview

Review and fix Swift Concurrency issues in Swift 6.2+ codebases by applying actor isolation, Sendable safety, and modern concurrency patterns with minimal behavior changes.

### Workflow

Workflow guidance for the swift-concurrency-expert skill.

### 1. Triage the issue

Capture the exact compiler diagnostics and the offending symbol(s). Identify the current actor context (@MainActor, actor, nonisolated) and whether a default actor isolation mode is enabled. Confirm whether the code is UI-bound or intended to run off the main actor.

### 2. Apply the smallest safe fix

Prefer edits that preserve existing behavior while satisfying data-race safety. Common fixes: UI-bound types: annotate the type or relevant members with @MainActor. Protocol conformance on main actor types: make the conformance isolated (e.g., extension Foo: @MainActor SomeProtocol). Global/static state: protect with @MainActor or move into an actor. Background work: move expensive work into a @concurrent async function on a nonisolated type or use an actor to guard mutable state. Sendable...

### Reference material

See references/swift-6-2-concurrency.md for Swift 6.2 changes, patterns, and examples. See references/swiftui-concurrency-tour-wwdc.md for SwiftUI-specific concurrency guidance.

## API reference

```
npx skills add steipete/agent-scripts --skill swift-concurrency-expert
```

Install the swift-concurrency-expert skill from steipete/agent-scripts.

```
npx skills add steipete/agent-scripts --skill swift-concurrency-expert
```

## Gotchas

- Confirm whether the code is UI-bound or intended to run off the main actor.
- Prefer edits that preserve existing behavior while satisfying data-race safety.

---
Generated by SkillMake from https://github.com/steipete/agent-scripts/tree/main/skills/swift-concurrency-expert on 2026-05-27T20:56:37.390Z.
Verify against source before relying on details.

File: ~/.claude/skills/swift-concurrency-expert/SKILL.md