Borrowing it
Nothing to install: this file belongs to zish-rob-crur/nucleus-apple-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/zish-rob-crur/nucleus-apple-mcp/main/.agents/skills/swiftui-patterns/SKILL.mdgit clone --depth 1 https://github.com/zish-rob-crur/nucleus-apple-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/zish-rob-crur/nucleus-apple-mcp/swiftui-patterns)<a href="https://agentmods.dev/skills/zish-rob-crur/nucleus-apple-mcp/swiftui-patterns"><img src="https://agentmods.dev/badge/skills/zish-rob-crur/nucleus-apple-mcp/swiftui-patterns/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/zish-rob-crur/nucleus-apple-mcp/swiftui-patterns"><img src="https://agentmods.dev/badge/skills/zish-rob-crur/nucleus-apple-mcp/swiftui-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00096 | $0.03719 |
| Opus 5.5 | $0.00038 | $0.01488 |
| Sonnet 5.5 | $0.00019 | $0.00744 |
| Haiku 4.5 | $0.00010 | $0.00372 |
Grade A, and why
swiftui-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 398 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SwiftUI Patterns
Modern SwiftUI patterns targeting iOS 26+ with Swift 6.3. Covers architecture, state management, view composition, environment wiring, async loading, design polish, and platform/share integration. Navigation and layout patterns live in dedicated sibling skills. Patterns are backward-compatible to iOS 17 unless noted.
Contents
- Architecture: Model-View (MV) Pattern
- State Management
- View Ordering Convention
- View Composition
- Environment
- Async Data Loading
- iOS 26+ New APIs
- Performance Guidelines
- HIG Alignment
- Writing Tools (iOS 18+)
- Common Mistakes
- Review Checklist
- References
Scope boundary: This skill covers architecture, state ownership, composition, environment wiring, async loading, and related SwiftUI app structure patterns. Detailed navigation patterns are covered in the swiftui-navigation skill, including NavigationStack, NavigationSplitView, sheets, tabs, and deep-linking patterns. Detailed layout, container, and component patterns are covered in the swiftui-layout-components skill, including stacks, grids, lists, scroll view patterns, forms, controls, search UI with .searchable, overlays, and related layout components.
Architecture: Model-View (MV) Pattern
Default to MV -- views are lightweight state expressions; models and services own business logic. Do not introduce view models unless the existing code already uses them.
Core principles:
- Favor
@State,@Environment,@Query,.task, and.onChangefor orchestration - Inject services and shared models via
@Environment; keep views small and composable - Split large views into smaller subviews rather than introducing a view model
- Test models, services, and business logic; keep views simple and declarative
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 398 lines · 96 tokens per session scan A cf18ddfa9af3
swiftui-patterns is a skill published in the GitHub repository zish-rob-crur/nucleus-apple-mcp (23 stars, last pushed 1mo ago), licensed MIT. It adds 96 tokens to every session and 3,719 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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