Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add pproenca/dot-skills --skill ios-design-systemgit clone --depth 1 https://github.com/pproenca/dot-skillsWrote 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/pproenca/dot-skills/ios-design-system)<a href="https://agentmods.dev/skills/pproenca/dot-skills/ios-design-system"><img src="https://agentmods.dev/badge/skills/pproenca/dot-skills/ios-design-system/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/pproenca/dot-skills/ios-design-system"><img src="https://agentmods.dev/badge/skills/pproenca/dot-skills/ios-design-system.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 | $0.00093 | $0.02492 |
| Opus 5 | $0.00046 | $0.01246 |
| Sonnet 5 | $0.00019 | $0.00498 |
| Haiku 4.5 | $0.00009 | $0.00249 |
Grade A, and why
ios-design-system 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 5d 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 — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Airbnb iOS Design System Best Practices
Opinionated, strict design system engineering for SwiftUI iOS 26 / Swift 6.2 apps. Contains 50 rules across 8 categories, prioritized by impact. Derived from Airbnb's Design Language System (DLS), Airbnb Swift Style Guide, Apple Human Interface Guidelines, and WWDC sessions. Mandates @Equatable on every view, @Observable for state, and style protocols as the primary component API.
Mandated Architecture Alignment
This skill is designed to work alongside swift-ui-architect. All code examples follow the same non-negotiable constraints:
- Feature modules depend on
Domain+DesignSystem; no directDatadependency @Observablefor mutable UI state,ObservableObject/@Publishednever@Equatablemacro on every view- Style protocols as the primary component styling API (Airbnb DLS pattern)
- Asset catalog as the source of truth for color values
- Local SPM package for design system module boundary
Scope & Relationship to Sibling Skills
This skill is the infrastructure layer — it teaches how to BUILD the design system itself. When loaded alongside sibling skills:
| Sibling Skill | Its Focus | This Skill's Focus |
|---|---|---|
swift-ui-architect |
Architecture (modular MVVM-C, route shells, protocol boundaries) | Design system infrastructure (tokens, styles, governance) |
ios-design |
Using design primitives (semantic colors, typography) | Engineering the token system that provides those primitives |
ios-ui-refactor |
Auditing/fixing visual quality issues | Preventing those issues via governance and automation |
ios-hig |
HIG compliance patterns | Asset and component infrastructure that makes compliance easy |
Clinic Architecture Contract (iOS 26 / Swift 6.2)
All guidance in this skill assumes the clinic modular MVVM-C architecture:
- Feature modules import
Domain+DesignSystemonly (neverData, never sibling features) - App target is the convergence point and owns
DependencyContainer, concrete coordinators, and Route Shell wiring Domainstays pure Swift and defines models plus repository,*Coordinating,ErrorRouting, andAppErrorcontractsDataowns SwiftData/network/sync/retry/background I/O and implements Domain protocols- Read/write flow defaults to stale-while-revalidate reads and optimistic queued writes
- ViewModels call repository protocols directly (no default use-case/interactor layer)
What ships with it
53 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.
- assets/templates/_template.md 805 B
- metadata.json 1.6 KB
- references/_sections.md 2.7 KB
- references/asset-icon-export-format.md 2.5 KB
- references/asset-image-optimization.md 3.7 KB
- references/asset-naming-convention.md 3.8 KB
- references/asset-separate-catalogs.md 2.6 KB
- references/asset-sf-symbols-first.md 2.6 KB
- references/color-audit-script.md 5.1 KB
- references/color-complete-pairs.md 4.7 KB
- references/color-limit-palette.md 5.6 KB
- references/color-no-hex-in-views.md 5.1 KB
- references/color-organized-xcassets.md 5.8 KB
- references/color-system-first.md 5.9 KB
- references/color-tint-not-brand-everywhere.md 5.6 KB
- references/govern-design-system-directory.md 5.3 KB
- references/govern-lint-for-tokens.md 4.6 KB
- references/govern-migration-incremental.md 4.5 KB
- references/govern-naming-conventions.md 3.7 KB
- references/govern-prevent-local-tokens.md 5.2 KB
- references/govern-single-source-of-truth.md 3.4 KB
- references/govern-spm-package-boundary.md 4.3 KB
- references/space-insets-pattern.md 4.3 KB
- references/space-no-magic-numbers.md 4.2 KB
- references/space-radius-tokens.md 3.2 KB
- references/space-size-tokens.md 4.4 KB
- references/space-token-enum.md 3.6 KB
- references/style-accessibility-first.md 4.3 KB
- references/style-catalog-file.md 5.0 KB
- references/style-configuration-over-parameters.md 4.9 KB
- references/style-dls-protocol-pattern.md 5.6 KB
- references/style-environment-awareness.md 5.0 KB
- references/style-equatable-views.md 4.2 KB
- references/style-preview-catalog.md 5.7 KB
- references/style-protocol-over-wrapper.md 4.5 KB
- references/style-static-member-syntax.md 4.0 KB
- references/style-view-for-containers-modifier-for-styling.md 4.6 KB
- references/theme-brand-layer-separation.md 4.8 KB
- references/theme-dont-over-theme.md 3.9 KB
- references/theme-environment-key.md 4.1 KB
- references/theme-light-dark-only.md 4.0 KB
- references/theme-tint-for-brand.md 3.6 KB
- references/token-asset-catalog-source.md 4.9 KB
- references/token-avoid-over-abstraction.md 4.8 KB
- references/token-enum-over-struct.md 3.7 KB
- references/token-shapestyle-extensions.md 4.6 KB
- references/token-single-file-per-domain.md 4.7 KB
- references/token-three-layer-hierarchy.md 4.3 KB
- references/type-avoid-font-design-mixing.md 3.3 KB
- references/type-custom-font-registration.md 3.3 KB
- references/type-max-styles-per-screen.md 3.7 KB
- references/type-scale-enum.md 2.3 KB
- references/type-system-styles-first.md 2.7 KB
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.
- 5d ago First seen · 159 lines · 93 tokens per session scan A 736fc64994a2
ios-design-system is a skill published in the GitHub repository pproenca/dot-skills (205 stars, last pushed 24d ago), licensed MIT. It adds 93 tokens to every session and 2,492 once invoked, about $0.0005 per session on Opus 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 2026-09-03.
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