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 GrishaAngelovGH/gemini-cli-agent-skills --skill frontend-ui-designergit clone --depth 1 https://github.com/GrishaAngelovGH/gemini-cli-agent-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/grishaangelovgh/gemini-cli-agent-skills/frontend-ui-designer)<a href="https://agentmods.dev/skills/grishaangelovgh/gemini-cli-agent-skills/frontend-ui-designer"><img src="https://agentmods.dev/badge/skills/grishaangelovgh/gemini-cli-agent-skills/frontend-ui-designer/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/grishaangelovgh/gemini-cli-agent-skills/frontend-ui-designer"><img src="https://agentmods.dev/badge/skills/grishaangelovgh/gemini-cli-agent-skills/frontend-ui-designer.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00038 | $0.01455 |
| Opus 5 | $0.00019 | $0.00727 |
| Sonnet 5 | $0.00008 | $0.00291 |
| Haiku 4.5 | $0.00004 | $0.00145 |
Grade A, and why
frontend-ui-designer 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 11d 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 — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend UI Designer Instructions
1. Visual Hierarchy & Composition
- Priority: Ensure the most important actions (CTAs) are most prominent. Use size, weight, and color to guide the eye.
- F-Pattern & Z-Pattern: Design layouts that follow natural scanning patterns for text-heavy and visual-heavy pages respectively.
- White Space: Use generous white space to reduce cognitive load and group related elements.
- Grouping: Use proximity and subtle borders/shadows to group related information (Law of Proximity).
2. Color Theory & Application
- The 60-30-10 Rule: 60% dominant neutral color (backgrounds/surfaces), 30% secondary color (borders/text), 10% accent color (CTAs/links).
- Contrast: Maintain WCAG AA/AAA compliance. Use high-contrast ratios for readability.
- Semantic Colors: Use consistent colors for status (Success: #10B981, Error: #EF4444, Warning: #F59E0B, Info: #3B82F6).
- Dark Mode Support: Ensure all colors have a dark mode equivalent. Use lighter grays (e.g., Slate-800/900) instead of pure black for backgrounds to reduce eye strain.
- Modern Palette Recommendation:
- Primary: Indigo (#6366F1) or Slate (#0F172A)
- Surface: White (#FFFFFF) or extremely light gray (#F8FAFC)
- Text: Slate-900 (#0F172A) for headings, Slate-600 (#475569) for body text.
3. Typography
- Font Pairing: Use modern sans-serif fonts like 'Inter', 'Geist', 'Roboto', or 'SF Pro Display'. Limit to two font families.
- Scale: Use a modular scale (e.g., Major Third).
- H1: 2.25rem (36px), Bold
- H2: 1.875rem (30px), Semi-bold
- H3: 1.5rem (24px), Semi-bold
- Body: 1rem (16px), Regular
- Small: 0.875rem (14px), Medium
- Line Height: 1.5 - 1.6 for body text to ensure readability; tighter (1.2-1.3) for headings.
4. Layout & Spacing
- 8pt Grid System: Use 4, 8, 16, 24, 32, 48, 64px for all spacing. This creates a rhythmic, professional feel.
- Containerization: Use standard widths (max-w-7xl, max-w-5xl) to keep content centered and readable on wide screens.
- Bento Box Grids: Consider organized, grid-like layouts for dashboard or data-heavy views to structure information clearly.
- Responsive Design: Always consider Mobile-First. Use flexible flex/grid layouts.
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.
- 11d ago First seen · 82 lines · 38 tokens per session scan A 6b13df8c07d0
frontend-ui-designer is a skill published in the GitHub repository GrishaAngelovGH/gemini-cli-agent-skills (16 stars, last pushed 6mo ago), licensed MIT. It adds 38 tokens to every session and 1,455 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 2026-08-30.
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