swift-expert
Builds iOS/macOS/watchOS/tvOS applications, implements SwiftUI views and state management, designs protocol-oriented architectures, handles async/await concurrency, implements actors for thread safety, and debugs Swift-specific issues. Use when building iOS/macOS applications with Swift 5.9+, SwiftUI, or async/await concurrency. Invoke for protocol-oriented programming, SwiftUI state management, actors, server-side Swift, UIKit integration, Combine, or Vapor.
npx skills add Jeffallan/claude-skills --skill swift-expert --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Swift Expert ## Core Workflow 1. **Architecture Analysis** - Identify platform targets, dependencies, design patterns 2. **Design Protocols** - Create protocol-first APIs with associated types 3. **Implement** - Write type-safe code with async/await and value semantics 4. **Optimize** - Profile with Instruments, ensure thread safety 5. **Test** - Write comprehensive tests with XCTest and async patterns > **Validation checkpoints:** After step 3, run `swift build` to verify compilation. After step 4, run `swift build -warnings-as-errors` to surface actor isolation and Sendable warnings. After step 5, run `swift test` and confirm all async tests pass. ## Reference Guide Load detailed guidance based on context: | Topic | Reference | Load When | |-------|-----------|-----------| | SwiftUI | `references/swiftui-patterns.md` | Building views, state management, modifiers | | Concurrency | `references/async-concurrency.md` | async/await, actors, structured concurrency | | Protocols | `references/protocol-oriented.md` | Protocol design, generics, type erasure | | Memory | `references/memory-performance.md` | ARC, weak/unowned, performance optimization | | Testing | `references/testing-pat
- Core Workflow
- Reference Guide
- Code Patterns
- async/await — Correct vs. Incorrect
- SwiftUI State Management
- Protocol-Oriented Architecture
- Actor for Thread Safety
- Constraints
- MUST DO
- MUST NOT DO
- Output Templates
What does the swift-expert skill do?
Builds iOS/macOS/watchOS/tvOS applications, implements SwiftUI views and state management, designs protocol-oriented architectures, handles async/await concurrency, implements actors for thread safety, and debugs Swift-specific issues. Use when building iOS/macOS applications with Swift 5.9+, SwiftUI, or async/await concurrency. Invoke for protocol-oriented programming, SwiftUI state management, actors, server-side Swift, UIKit integration, Combine, or Vapor.
How do I install it?
Run `npx skills add Jeffallan/claude-skills --skill swift-expert --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From Jeffallan/claude-skills, a repository with 10,871 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.