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 RudyCity/superagent --skill responsive-designgit clone --depth 1 https://github.com/RudyCity/superagentWrote 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/rudycity/superagent/responsive-design)<a href="https://agentmods.dev/skills/rudycity/superagent/responsive-design"><img src="https://agentmods.dev/badge/skills/rudycity/superagent/responsive-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/rudycity/superagent/responsive-design"><img src="https://agentmods.dev/badge/skills/rudycity/superagent/responsive-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 | $0.00040 | $0.00397 |
| Opus 5.5 | $0.00016 | $0.00159 |
| Sonnet 5.5 | $0.00008 | $0.00079 |
| Haiku 4.5 | $0.00004 | $0.00040 |
Grade A, and why
responsive-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.
Copies of this mod
2 near-identical copies found in the catalogue:
- responsive-design — 100% identical, 0 lines differ
- responsive-design — 100% identical, 0 lines differ
What it actually says
Responsive Design
Master modern responsive design techniques to create interfaces that adapt seamlessly across all screen sizes and device contexts.
When to Use This Skill
- Implementing mobile-first responsive layouts
- Using container queries for component-based responsiveness
- Creating fluid typography and spacing scales
- Building complex layouts with CSS Grid and Flexbox
- Designing breakpoint strategies for design systems
- Implementing responsive images and media
- Creating adaptive navigation patterns
- Building responsive tables and data displays
Detailed patterns and worked examples
Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
Best Practices
- Mobile-First: Start with mobile styles, enhance for larger screens
- Content Breakpoints: Set breakpoints based on content, not devices
- Fluid Over Fixed: Use fluid values for typography and spacing
- Container Queries: Use for component-level responsiveness
- Test Real Devices: Simulators don't catch all issues
- Performance: Optimize images, lazy load off-screen content
- Touch Targets: Maintain 44x44px minimum on mobile
- Logical Properties: Use inline/block for internationalization
Common Issues
- Horizontal Overflow: Content breaking out of viewport
- Fixed Widths: Using px instead of relative units
- Viewport Height: 100vh issues on mobile browsers
- Font Size: Text too small on mobile
- Touch Targets: Buttons too small to tap accurately
- Aspect Ratio: Images squishing or stretching
- Z-Index Stacking: Overlays breaking on different screens
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.
- 1mo ago First seen · 45 lines · 40 tokens per session scan A c8bd56f8fc0f
responsive-design is a skill published in the GitHub repository RudyCity/superagent (58 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 397 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 2026-09-03.
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