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 HoangNguyen0403/agent-skills-standard --skill common-ui-designgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/common-ui-design)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-ui-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-ui-design/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/hoangnguyen0403/agent-skills-standard/common-ui-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-ui-design.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 | $0.00047 | $0.00732 |
| Opus 5 | $0.00023 | $0.00366 |
| Sonnet 5 | $0.00009 | $0.00146 |
| Haiku 4.5 | $0.00005 | $0.00073 |
Grade A, and why
common-ui-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 13d 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Design Direction
Priority: P0 (CRITICAL)
Before writing any code, commit to deliberate aesthetic direction.
Phase 0: Design Thinking (Mandatory Pre-Code)
Answer these before touching implementation:
- Purpose: What problem this UI solve? Who uses it?
- Tone: Pick one extreme and commit — brutally minimal | maximalist | retro-futuristic | editorial/magazine | luxury/refined | brutalist/raw | playful/toy-like | organic/natural | art deco | industrial/utilitarian
- Differentiation: Name one thing user will remember about this interface.
Bold maximalism and refined minimalism both work — intentionality, not intensity, key.
Aesthetic Dimensions
Typography
- Pair distinctive display font + refined body font; never default to system fonts.
- Self-host via
next/font,@font-face, or Google Fonts API — never CDN<link>in production. - See Font Pairing & Tone Examples
Color & Theme
- Dominant color + sharp accent > timid, evenly-distributed palettes.
- Use CSS custom properties (
--color-primary,--color-accent) for consistency. - Commit: dark or light — don't default to light because it feels "safe".
Motion
- One well-orchestrated entrance (staggered reveals,
animation-delay) > scattered micro-interactions. - CSS-first:
@keyframes,transition,animation-delay; React: Motion library for complex sequences. - See Motion Patterns
Spatial Composition
- Break grid intentionally: asymmetry, overlap, diagonal flow, grid-breaking elements.
- Generous negative space OR controlled density — never accidental middleground.
Backgrounds & Depth
- Create atmosphere: gradient meshes, noise textures, layered transparencies, grain overlays.
- Dramatic shadows and decorative borders should match chosen tone.
- Solid white/gray backgrounds = missed creative opportunity.
Anti-Patterns
- No generic font defaults: Inter/Roboto/Arial/system-ui produce forgettable UIs; choose characterful fonts.
- No purple-gradient-on-white: Most overused AI aesthetic; commit to something context-specific.
- No scattered animations: One orchestrated entrance beats ten random hover effects.
- No accidental layouts: Every spacing and positioning decision must serve aesthetic intent.
- No same aesthetic twice: Vary light/dark, font style, tone — never converge on single style.
What ships with it
2 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.
- 13d ago First seen · 84 lines · 47 tokens per session scan A 309c229e2d47
common-ui-design is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (565 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 732 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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