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 khanhhuyenngo985-sys/character-scene-design-skills --skill frontend-designgit clone --depth 1 https://github.com/khanhhuyenngo985-sys/character-scene-design-skillsWrote 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/khanhhuyenngo985-sys/character-scene-design-skills/frontend-design)<a href="https://agentmods.dev/skills/khanhhuyenngo985-sys/character-scene-design-skills/frontend-design"><img src="https://agentmods.dev/badge/skills/khanhhuyenngo985-sys/character-scene-design-skills/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/khanhhuyenngo985-sys/character-scene-design-skills/frontend-design"><img src="https://agentmods.dev/badge/skills/khanhhuyenngo985-sys/character-scene-design-skills/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 | $0.00054 | $0.02002 |
| Opus 5 | $0.00027 | $0.01001 |
| Sonnet 5 | $0.00011 | $0.00400 |
| Haiku 4.5 | $0.00005 | $0.00200 |
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 12d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
7 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.
- 12d ago First seen · 148 lines · 54 tokens per session scan A aadce8f86d13
frontend-design is a skill published in the GitHub repository khanhhuyenngo985-sys/character-scene-design-skills (10 stars, last pushed 3mo ago), with no licence file. It adds 54 tokens to every session and 2,002 once invoked, about $0.0003 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 2026-08-31.
Other skills, from other repositories
ui-design
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frontend-design
A design guide for building polished web interfaces such as pages, dashboards, forms, navigation, and reusable UI components. It covers HTML, CSS, JavaScript, and common frontend frameworks.
21st-dev-components
Use when the user wants to build a React site or app section from 21st.dev components, clone the structure of a reference site with 21st.dev building blocks, browse 21st.dev manually and return copied prompts/code, or says things like "build me a site like this", "use 21st.dev", "copy prompt", "component URL", "hero…
existing-ui-audit
Use BEFORE writing or editing any non-trivial UI — inventories components, design tokens, shadcn primitives, and reusable patterns into state.uiaudit. Hard gate for fe-design.
design-review
When the user says "review the design", "check the UI", or wants a comprehensive UI/UX review. 7 phases: interaction, responsiveness, accessibility. Inventory via existing-ui-audit.
fe-design
Frontend design heuristics and the loop applying them: existing-ui-audit, brief, inventory, build, review. Use when building or changing any UI, not only when planning one.