Update Swiftui APIs
AvdLee/SwiftUI-Agent-Skill
Scan Apple's SwiftUI documentation for deprecated APIs and update the SwiftUI Expert Skill with modern replacements.
A skill your agent uses when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type)…
Install Swiftui Patterns
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patterns --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .claude/skills/swiftui-patterns && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .claude/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patternsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patterns --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .agents/skills/swiftui-patterns && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .agents/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patterns --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .cursor/skills/swiftui-patterns && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .cursor/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/johnrogers/claude-swift-engineering.git --path plugins/swift-engineering/skills/swiftui-patterns--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patterns --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .gemini/skills/swiftui-patterns && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .gemini/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patternsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .github/skills/swiftui-patterns && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .github/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install johnrogers/claude-swift-engineering swiftui-patterns --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/johnrogers/claude-swift-engineering.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/swift-engineering/skills/swiftui-patterns .opencode/skills/swiftui-patterns && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "swiftui-patterns" agent skill from https://github.com/johnrogers/claude-swift-engineering/tree/main/plugins/swift-engineering/skills/swiftui-patterns into .opencode/skills/swiftui-patterns/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swiftui-patterns", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
swiftui-patterns- GitHub stars
- 231
- Token cost
- ~1.1k tokens
- SKILL.md length
- 402 words
- Files
- 13 (incl. references)
- Skills in repo
- 17
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type)…
- Works in 5 steps: Use @Observable for model classes (no… → Use @State for view-owned models,… → Use .task { } for async work… → …
- Implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable
- SKILL.md covers Overview, Quick Reference, Core Workflow and Reference Loading Guide, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Swiftui Patterns is an agent skill from johnrogers/claude-swift-engineering. Use when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type), async operations (.task/.refreshable), or migrating from ObservableObject/@StateObject.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including reference files (for example `references/accessibility.md`, `references/async-patterns.md` and `references/composition.md`).
It sits in Mobile, covering iOS development. It works with SwiftUI and iOS. The repository describes itself as: A collection of agents and skills to aid in the planning, implementation, documentation and testing of Swift/TCA code. The licence is MIT.
When your agent uses it
- Implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable
- MVVM architecture
- NavigationStack
- Accessibility (VoiceOver/Dynamic Type)
Example prompts
- “/swiftui-patterns”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Use @Observable for model classes (no @Published needed)
- Use @State for view-owned models, @Bindable for passed models
- Use .task { } for async work (auto-cancels on disappear)
- Use NavigationStack with NavigationPath for programmatic navigation
- Apply .accessibilityLabel() and .accessibilityHint() to interactive elements
What it can do on your machine
Read from SKILL.md and the folder at commit 1dc2cf4. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Swiftui Patterns loads about 1.1k tokens when it runs, and up to ~7k if it reads all its reference files. Until then it costs about 70 tokens; SKILL.md has 402 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from johnrogers/claude-swift-engineering at commit 1dc2cf4, republished under its MIT licence (© johnrogers). 402 words, ~1,066 tokens.
Download SKILL.mdSave it as
.claude/skills/swiftui-patterns/SKILL.md (or your agent's skills folder). This skill also uses 12 other files; get the full folder from GitHub.- name
- swiftui-patterns
- description
- Use when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type), async operations (.task/.refreshable), or migrating from ObservableObject/@StateObject.
SwiftUI Patterns (iOS 17+)
SwiftUI 17+ removes ObservableObject boilerplate with @Observable, simplifies environment injection with @Environment, and introduces task-based async patterns. The core principle: use Apple's modern APIs instead of reactive libraries.
Overview
Quick Reference
| Need | Use (iOS 17+) | NOT |
|---|---|---|
| Observable model | @Observable | ObservableObject |
| Published property | Regular property | @Published |
| Own state | @State | @StateObject |
| Passed model (binding) | @Bindable | @ObservedObject |
| Environment injection | environment(_:) | environmentObject(_:) |
| Environment access | @Environment(Type.self) | @EnvironmentObject |
| Async on appear | .task { } | .onAppear { Task {} } |
| Value change | onChange(of:initial:_:) | onChange(of:perform:) |
Core Workflow
- Use
@Observablefor model classes (no @Published needed) - Use
@Statefor view-owned models,@Bindablefor passed models - Use
.task { }for async work (auto-cancels on disappear) - Use
NavigationStackwithNavigationPathfor programmatic navigation - Apply
.accessibilityLabel()and.accessibilityHint()to interactive elements
Reference Loading Guide
ALWAYS load reference files if there is even a small chance the content may be required. It's better to have the context than to miss a pattern or make a mistake.
| Reference | Load When |
|---|---|
| Observable | Creating new @Observable model classes |
| State Management | Deciding between @State, @Bindable, @Environment |
| Environment | Injecting dependencies into view hierarchy |
| View Modifiers | Using onChange, task, or iOS 17+ modifiers |
| Migration Guide | Updating iOS 16 code to iOS 17+ |
| MVVM Observable | Setting up view model architecture |
| Navigation | Programmatic or deep-link navigation |
| Performance | Lists with 100+ items or excessive re-renders |
| UIKit Interop | Wrapping UIKit components (WKWebView, PHPicker) |
| Accessibility | VoiceOver, Dynamic Type, accessibility actions |
| Async Patterns | Loading states, refresh, background tasks |
| Composition | Reusable view modifiers or complex conditional UI |
Show full SKILL.md (158 more words)Show less
Common Mistakes
Over-using
@Bindablefor passed models — Creating@Bindablefor every property causes unnecessary view reloads. Use@Bindableonly for mutable model properties that need two-way binding. Read-only computed properties should use regular properties.State placement errors — Putting model state in the view instead of a dedicated
@Observablemodel causes view logic to become tangled. Always separate model and view concerns.NavigationPath state corruption — Mutating
NavigationPathincorrectly can leave it in inconsistent state. UsenavigationDestination(for:destination:)with proper state management to avoid path corruption.Missing
.taskcancellation —.taskhandles cancellation on disappear automatically, but nested Tasks don't. Complex async flows need explicit cancellation tracking to avoid zombie tasks.Ignoring environment invalidation — Changing environment values at parent doesn't invalidate child views automatically. Use
@Environmentconsistently and understand when re-renders happen based on observation.UIKit interop memory leaks —
UIViewRepresentableandUIViewControllerRepresentablecan leak if delegate cycles aren't broken. Weak references and explicit cleanup are required.
© johnrogers, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 12 other files (references) in plugins/swift-engineering/skills/swiftui-patterns of johnrogers/claude-swift-engineering.
- SKILL.md
- references/accessibility.md
- references/async-patterns.md
- references/composition.md
- references/environment.md
- references/migration-guide.md
- references/mvvm-observable.md
- references/navigation.md
- references/observable.md
- references/performance.md
- references/state-management.md
- references/uikit-interop.md
- references/view-modifiers.md
Open the folder on GitHubat commit 1dc2cf4
Compare with similar skills
Swiftui Patterns next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Swiftui Patterns this skilljohnrogers/claude-swift-engineering | 231 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Update Swiftui APIsAvdLee/SwiftUI-Agent-Skill | 3.7k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Swiftui Liquid Glassharperreed/dotfiles | 334 | 8 repos | ~941 | Automated safety check: Pass | None | |
| Swiftui Expert Skillomarshahine/HomeClaw | 176 | 4 repos | ~2.8k | Automated safety check: Pass | MIT | |
| Hig Project Contextraintree-technology/hig-doctor | 143 | 5 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Liquid Glass DesignAstraFoundry/KumoApp | 290 | 5 repos | ~2.3k | Automated safety check: Pass | AGPL-3.0 |
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Categories
Questions about Swiftui Patterns
What does Swiftui Patterns do?
A skill your agent uses when implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable, MVVM architecture, NavigationStack, lazy loading, UIKit interop, accessibility (VoiceOver/Dynamic Type)…. Swiftui Patterns is an agent skill from johnrogers/claude-swift-engineering.refreshable), or migrating from ObservableObject/@StateObject.
When should I use Swiftui Patterns?
Swiftui Patterns fits situations like: implementing iOS 17+ SwiftUI patterns: @Observable/@Bindable; MVVM architecture; navigationStack; accessibility (VoiceOver/Dynamic Type).
How do I install Swiftui Patterns in Claude Code?
Run `npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a claude-code`. Or copy the skill folder (plugins/swift-engineering/skills/swiftui-patterns in johnrogers/claude-swift-engineering) into .claude/skills/swiftui-patterns in your project. Claude Code loads it when a task matches its description.
How do I install Swiftui Patterns in Codex?
Run `npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a codex`. Or copy the skill folder (plugins/swift-engineering/skills/swiftui-patterns in johnrogers/claude-swift-engineering) into .agents/skills/swiftui-patterns in your project. Codex loads it when a task matches its description.
Can I use Swiftui Patterns in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add johnrogers/claude-swift-engineering --skill swiftui-patterns -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/swiftui-patterns, .gemini/skills/swiftui-patterns, .github/skills/swiftui-patterns and .opencode/skills/swiftui-patterns in your project.
What does Swiftui Patterns need to run?
SKILL.md names no scripts, command-line tools or credentials: Swiftui Patterns is instructions for the agent only.
Does Swiftui Patterns access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Swiftui Patterns safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Swiftui Patterns use?
Swiftui Patterns is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Swiftui Patterns use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6k tokens, read only when the agent opens those files.
What are the alternatives to Swiftui Patterns?
Skills that share tags, products or a category with Swiftui Patterns: Update Swiftui APIs (AvdLee/SwiftUI-Agent-Skill, 3.7k stars), Swiftui Liquid Glass (harperreed/dotfiles, 334 stars), Swiftui Expert Skill (omarshahine/HomeClaw, 176 stars) and Hig Project Context (raintree-technology/hig-doctor, 143 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Swiftui Patterns?
johnrogers (a GitHub user) maintains it in johnrogers/claude-swift-engineering, which has 231 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on January 18, 2026.
Source: johnrogers/claude-swift-engineering on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.