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 vibeinging/YiYi --skill frontend_designgit clone --depth 1 https://github.com/vibeinging/YiYiWrote 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/vibeinging/yiyi/frontend_design)<a href="https://agentmods.dev/skills/vibeinging/yiyi/frontend_design"><img src="https://agentmods.dev/badge/skills/vibeinging/yiyi/frontend_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/vibeinging/yiyi/frontend_design"><img src="https://agentmods.dev/badge/skills/vibeinging/yiyi/frontend_design.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 | $0.00043 | $0.00404 |
| Opus 5 | $0.00022 | $0.00202 |
| Sonnet 5 | $0.00009 | $0.00081 |
| Haiku 4.5 | $0.00004 | $0.00040 |
Grade A, and why
frontend_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 9d 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.
What it actually says
This skill guides creation of distinctive, production-grade frontend interfaces that avoid generic "AI slop" aesthetics. Implement real working code with exceptional attention to aesthetic details and creative choices.
Design Thinking
Before coding, understand the context and commit to a BOLD aesthetic direction:
- Purpose: What problem does this interface solve? Who uses it?
- Tone: Pick an extreme: brutally minimal, maximalist chaos, retro-futuristic, organic/natural, luxury/refined, playful/toy-like, editorial/magazine, brutalist/raw, art deco/geometric, soft/pastel, industrial/utilitarian, etc.
- Constraints: Technical requirements (framework, performance, accessibility).
- Differentiation: What makes this UNFORGETTABLE?
Then implement working code (HTML/CSS/JS, React, Vue, etc.) that is production-grade, visually striking, cohesive, and meticulously refined.
Frontend Aesthetics Guidelines
- Typography: Choose distinctive, characterful fonts. Avoid generic fonts like Arial and Inter.
- Color & Theme: Commit to a cohesive aesthetic with CSS variables. Dominant colors with sharp accents.
- Motion: Animations for effects and micro-interactions. CSS-only solutions for HTML, Motion library for React.
- Spatial Composition: Unexpected layouts, asymmetry, overlap, diagonal flow, grid-breaking elements.
- Backgrounds & Visual Details: Gradient meshes, noise textures, geometric patterns, layered transparencies, dramatic shadows.
NEVER use generic AI-generated aesthetics. Interpret creatively and make unexpected choices.
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.
- 9d ago First seen · 35 lines · 43 tokens per session scan A 0ca40030ec1e
frontend_design is a skill published in the GitHub repository vibeinging/YiYi (51 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 43 tokens to every session and 404 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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