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 bugrabilge/bilge-development-kit --skill mobile-designgit clone --depth 1 https://github.com/bugrabilge/bilge-development-kitWrote 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/bugrabilge/bilge-development-kit/mobile-design)<a href="https://agentmods.dev/skills/bugrabilge/bilge-development-kit/mobile-design"><img src="https://agentmods.dev/badge/skills/bugrabilge/bilge-development-kit/mobile-design.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00031 | $0.01983 |
| Opus 5 | $0.00015 | $0.00992 |
| Sonnet 5 | $0.00006 | $0.00397 |
| Haiku 4.5 | $0.00003 | $0.00198 |
Grade A, and why
mobile-design 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 — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mobile Design
"Mobile is not a small screen experience. It is a one-hand, one-eye, on-the-go experience." -- Luke Wroblewski
When to Use
- Designing user interfaces for iOS and Android applications
- Implementing platform-specific design patterns (iOS HIG, Material Design)
- Choosing navigation patterns for mobile apps
- Designing touch interactions and gesture-based interfaces
- Creating responsive and adaptive layouts for different screen sizes
- Reviewing mobile designs for usability and platform consistency
- Building cross-platform apps that feel native on each platform
Platform Design Languages
iOS Human Interface Guidelines (HIG)
Apple's design philosophy emphasizes clarity, deference, and depth.
Core Principles:
- Clarity: Text is legible, icons are precise, adornments are subtle and appropriate
- Deference: The UI helps users understand and interact with content without competing with it
- Depth: Visual layers and realistic motion create hierarchy and spatial relationships
iOS-Specific Patterns:
- Navigation bars at the top with back chevron (not arrow)
- Tab bars at the bottom with icon + label (max 5 tabs)
- Large titles that collapse on scroll (UINavigationBar large title mode)
- Sheet presentations (half-sheet, full-sheet) for secondary content
- Swipe-to-go-back gesture from left edge
- SF Symbols for consistent, scalable iconography
- Dynamic Type for user-controlled text sizes
- Haptic feedback (UIFeedbackGenerator) for tactile responses
iOS Typography:
- System font: San Francisco (SF Pro for UI, SF Mono for code)
- Support Dynamic Type with all custom text styles
- Minimum body text: 17pt for readability
- Use text styles (Title, Headline, Body, Caption) for consistency
Material Design (Google / Android)
Google's design system emphasizes adaptive, accessible, and expressive interfaces.
Core Principles:
- Adaptive: Design that scales across devices, input modes, and screen sizes
- Accessible: Built-in accessibility with meaningful color, typography, and motion
- Expressive: Customizable theming with Material You dynamic color
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 · 210 lines · 31 tokens per session scan A 0d531544818a
mobile-design is a skill published in the GitHub repository bugrabilge/bilge-development-kit (10 stars, last pushed 4mo ago), licensed MIT. It adds 31 tokens to every session and 1,983 once invoked, about $0.0002 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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