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 EliasOulkadi/shokunin --skill responsive-enginegit clone --depth 1 https://github.com/EliasOulkadi/shokuninWrote 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/eliasoulkadi/shokunin/responsive-engine)<a href="https://agentmods.dev/skills/eliasoulkadi/shokunin/responsive-engine"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/responsive-engine/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/eliasoulkadi/shokunin/responsive-engine"><img src="https://agentmods.dev/badge/skills/eliasoulkadi/shokunin/responsive-engine.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 | $0.00095 | $0.03601 |
| Opus 5.5 | $0.00038 | $0.01440 |
| Sonnet 5.5 | $0.00019 | $0.00720 |
| Haiku 4.5 | $0.00010 | $0.00360 |
Grade A, and why
responsive-engine 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 2mo 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 — 416 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Responsive Engine
Layouts that work at every screen size without breakpoint spaghetti. Inspired by Ahmad Shadeed (Container Queries), Jen Simmons (Intrinsic Web Design), and the CSS Working Group.
Core Principle
Responsive design is about containers, not viewports. Use Container Queries first, media queries only for global layout shifts and form factor detection.
Container Queries (preferred over media queries)
.card-grid {
container-type: inline-size;
container-name: card-grid;
}
@container card-grid (min-width: 600px) {
.card {
display: grid;
grid-template-columns: 200px 1fr;
}
}
@container card-grid (min-width: 900px) {
.card {
grid-template-columns: 1fr 1fr 1fr;
}
}
Container query length units
.card {
padding: 10cqw; /* 10% of container width */
font-size: 5cqi; /* 5% of container inline size */
margin-block: 2cqb; /* 2% of container block size */
border-radius: 1cqmin; /* 1% of container smaller side */
}
Form Factor Detection
Detect the device type, not just width.
/* Touch vs mouse */
@media (pointer: coarse) {
.button { min-height: 48px; }
}
@media (hover: hover) {
.card:hover { transform: scale(1.02); }
}
@media (hover: none) {
.card:active { transform: scale(0.98); }
}
/* Portrait vs landscape */
@media (orientation: portrait) {
.hero-grid { grid-template-columns: 1fr; }
}
Viewport Unit Decision Tree
| Use case | Unit | Why |
|---|---|---|
| Full-screen hero | min-h-[100dvh] |
Adapts to URL bar on mobile. Never 100vh — iOS Safari viewport jumps. |
| Minimum safe height | min-height: 100svh |
Small viewport height. Fallback for when URL bar is visible. |
| Large viewport design | 100lvh |
Maximum when URL bar hidden. Only for desktop-like experiences. |
| Width-based | dvw |
Dynamic viewport width. Avoid on scroll-zooming mobile pages. |
.hero {
height: 100dvh;
min-height: 100svh; /* Fallback: never smaller than smallest viewport */
}
What ships with it
4 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.
- 2mo ago First seen · 416 lines · 95 tokens per session scan A c86283858816
responsive-engine is a skill published in the GitHub repository EliasOulkadi/shokunin (112 stars, last pushed 28d ago), licensed MIT. It adds 95 tokens to every session and 3,601 once invoked, about $0.0004 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 2026-08-30.
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