SwiftUI-Agent-Skill swiftui-pro

Comprehensively reviews SwiftUI code for best practices on modern APIs, maintainability, and performance. Use when reading, writing, or reviewing SwiftUI projects.

install

source · Clone the upstream repo

git clone https://github.com/twostraws/SwiftUI-Agent-Skill

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/twostraws/SwiftUI-Agent-Skill "$T" && mkdir -p ~/.claude/skills && cp -r "$T/swiftui-pro" ~/.claude/skills/twostraws-swiftui-agent-skill-swiftui-pro && rm -rf "$T"

manifest: swiftui-pro/SKILL.md

source content

Review Swift and SwiftUI code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems - do not nitpick or invent issues.

Review process:

Check for deprecated API using
```
references/api.md
```
.
Check that views, modifiers, and animations have been written optimally using
```
references/views.md
```
.
Validate that data flow is configured correctly using
```
references/data.md
```
.
Ensure navigation is updated and performant using
```
references/navigation.md
```
.
Ensure the code uses designs that are accessible and compliant with Apple’s Human Interface Guidelines using
```
references/design.md
```
.
Validate accessibility compliance including Dynamic Type, VoiceOver, and Reduce Motion using
```
references/accessibility.md
```
.
Ensure the code is able to run efficiently using
```
references/performance.md
```
.
Quick validation of Swift code using
```
references/swift.md
```
.
Final code hygiene check using
```
references/hygiene.md
```
.

If doing a partial review, load only the relevant reference files.

Core Instructions

iOS 26 exists, and is the default deployment target for new apps.
Target Swift 6.2 or later, using modern Swift concurrency.
As a SwiftUI developer, the user will want to avoid UIKit unless requested.
Do not introduce third-party frameworks without asking first.
Break different types up into different Swift files rather than placing multiple structs, classes, or enums into a single file.
Use a consistent project structure, with folder layout determined by app features.

Output Format

Organize findings by file. For each issue:

State the file and relevant line(s).
Name the rule being violated (e.g., "Use
```
foregroundStyle()
```
instead of
```
foregroundColor()
```
").
Show a brief before/after code fix.

Skip files with no issues. End with a prioritized summary of the most impactful changes to make first.

Example output:

ContentView.swift

Line 12: Use

foregroundStyle()

instead of
foregroundColor()
.

// Before
Text("Hello").foregroundColor(.red)

// After
Text("Hello").foregroundStyle(.red)

Line 24: Icon-only button is bad for VoiceOver - add a text label.

// Before
Button(action: addUser) {
    Image(systemName: "plus")
}

// After
Button("Add User", systemImage: "plus", action: addUser)

Line 31: Avoid

Binding(get:set:)

in view body - use
@State
with
onChange()
instead.

// Before
TextField("Username", text: Binding(
    get: { model.username },
    set: { model.username = $0; model.save() }
))

// After
TextField("Username", text: $model.username)
    .onChange(of: model.username) {
        model.save()
    }

Summary

Accessibility (high): The add button on line 24 is invisible to VoiceOver.
Deprecated API (medium):
```
foregroundColor()
```
on line 12 should be
```
foregroundStyle()
```
.
Data flow (medium): The manual binding on line 31 is fragile and harder to maintain.

End of example.

References

```
references/accessibility.md
```
- Dynamic Type, VoiceOver, Reduce Motion, and other accessibility requirements.
```
references/api.md
```
- updating code for modern API, and the deprecated code it replaces.
```
references/design.md
```
- guidance for building accessible apps that meet Apple’s Human Interface Guidelines.
```
references/hygiene.md
```
- making code compile cleanly and be maintainable in the long term.
```
references/navigation.md
```
- navigation using
```
NavigationStack
```
/
```
NavigationSplitView
```
, plus alerts, confirmation dialogs, and sheets.
```
references/performance.md
```
- optimizing SwiftUI code for maximum performance.
```
references/data.md
```
- data flow, shared state, and property wrappers.
```
references/swift.md
```
- tips on writing modern Swift code, including using Swift Concurrency effectively.
```
references/views.md
```
- view structure, composition, and animation.