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 superduke/ganvil --skill frontend-designgit clone --depth 1 https://github.com/superduke/ganvilWrote 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/superduke/ganvil/frontend-design)<a href="https://agentmods.dev/skills/superduke/ganvil/frontend-design"><img src="https://agentmods.dev/badge/skills/superduke/ganvil/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/superduke/ganvil/frontend-design"><img src="https://agentmods.dev/badge/skills/superduke/ganvil/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 | $0.00041 | $0.03407 |
| Opus 5.5 | $0.00016 | $0.01363 |
| Sonnet 5.5 | $0.00008 | $0.00681 |
| Haiku 4.5 | $0.00004 | $0.00341 |
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 1mo 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 — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Design Standards
This skill provides the design evaluation criteria and aesthetic guidelines used by the ganvil planner and frontend evaluator. It encodes design principles that turn subjective judgments like "is this design good?" into concrete, gradable terms.
Design Thinking Framework
Before making any design decision, understand:
- Purpose: What problem does this interface solve? Who uses it?
- Tone: Commit to a BOLD aesthetic direction. Options include (but are not limited to): brutally minimal, maximalist chaos, retro-futuristic, organic/natural, luxury/refined, playful/toy-like, editorial/magazine, brutalist/raw, art deco/geometric, soft/pastel, industrial/utilitarian. Choose one and execute it with precision.
- Constraints: Technical requirements (framework, performance, accessibility).
- Differentiation: What makes this UNFORGETTABLE? What's the one thing someone will remember?
CRITICAL: Choose a clear conceptual direction and execute it with precision. Bold maximalism and refined minimalism both work — the key is intentionality, not intensity.
Design Reference Library
For inspiration and calibration, reference real-world design systems from the awesome-design-md collection. Each entry represents a standout design identity:
High-Caliber Design References (by domain)
| Domain | Reference | Design Character | Why It's Exceptional |
|---|---|---|---|
| Dev Tools | Linear | Ultra-minimal, precise, purple accent | Every pixel is intentional. Spacing, typography, and color serve function and mood equally |
| Dev Tools | Vercel | Black/white precision, Geist font | Radical restraint used as a design weapon. Nothing extra, nothing missing |
| Fintech | Stripe | Purple gradients, weight-300 elegance | Signature gradient meshes create depth and warmth. Typography is light yet legible |
| Fintech | Revolut | Sleek dark interface, gradient cards | Premium dark surfaces with vibrant card accents create financial confidence |
| E-commerce | Shopify | Dark cinematic, neon green accent | Full-bleed photography, ultra-light display type, unexpected for e-commerce |
| E-commerce | Airbnb | Warm coral accent, rounded UI | Photography-driven design with consistently warm, inviting palette |
| Consumer | Apple | Premium white space, cinematic imagery | SF Pro font system, dramatic full-viewport product shots |
| Consumer | Spotify | Vibrant green on dark, bold type | Album-art-driven layouts that feel alive and dynamic |
| Creative | Framer | Bold black/blue, motion-first | Design itself IS the content — every transition and animation communicates |
| Creative | Figma | Vibrant multi-color, playful-professional | Rainbow palette that somehow stays cohesive through deliberate constraining |
| Editorial | The Verge | Acid-mint, ultraviolet accents | Custom Manuka display type, deliberately jarring and memorable |
| Automotive | Tesla | Radical subtraction, cinematic photography | Universal Sans, near-empty black/white canvas, product is the hero |
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.
- 1mo ago First seen · 209 lines · 41 tokens per session scan A 0ef77b1dbc85
frontend-design is a skill published in the GitHub repository superduke/ganvil (3 stars, last pushed 3mo ago), licensed MIT. It adds 41 tokens to every session and 3,407 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.
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