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 HoangNguyen0403/agent-skills-standard --skill common-ui-designgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/common-ui-design)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-ui-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-ui-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/hoangnguyen0403/agent-skills-standard/common-ui-design"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-ui-design.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 | $0.00047 | $0.01044 |
| Opus 5.5 | $0.00019 | $0.00418 |
| Sonnet 5.5 | $0.00009 | $0.00209 |
| Haiku 4.5 | $0.00005 | $0.00104 |
Grade A, and why
common-ui-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 yesterday.
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
1 near-identical copy found in the catalogue:
- common-ui-design — 100% identical, 64 lines differ
How it starts
The opening of the file, as written. The whole thing — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Design Direction
Priority: P0 (CRITICAL)
Before writing any code, commit to deliberate aesthetic direction grounded in product context.
Phase 0: Design Thinking & Direction (Pre-Code)
Answer these before touching implementation:
- Context & Baseline: For existing designs, polish is the default (preserve structure/behavior). Restyle or rethink requires explicit request. For new designs, explore purposefully without an absent baseline constraint.
- Audience & Task: Who uses the interface, under what conditions, and what constitutes task success?
- Character & Tone: Define 2–3 concrete traits grounded in brand and domain (e.g., utilitarian, editorial, refined, playful, minimal) — intentionality, not extreme novelty, is key.
- Visual Purpose: Ensure visual choices support task clarity; a restrained, coherent neutral design is fully valid when justified by utility and domain.
Aesthetic Dimensions
Typography
- Match typography to brand personality and platform conventions. Platform typography (
system-ui, SF Pro, Roboto, Segoe UI) is valid for high-density, utility-first interfaces; pair distinctive display + refined body fonts when brand identity demands character. - Ensure readable type scale, robust hierarchy, and accessible line lengths.
- Self-host web fonts via framework loaders or
@font-face— never use CDN<link>in production. - See Font Pairing & Tone Examples
Color & Theme
- Deliberate color system: dominant brand tone + semantic states, with an accent or restrained neutral palette suited to the task.
- Ground mode choice (light, dark, high-contrast) in audience ergonomics, task lighting, and brand requirements.
- Use CSS custom properties (
--color-primary,--color-accent) for consistent token binding. - Ensure WCAG AA contrast compliance across all text and interactive states.
Spatial Composition & Depth
- Structure spatial density by purpose: generous negative space for focus; controlled density for data tools.
- Grid breaks and asymmetry must serve information flow, never decorative gimmickry.
- Backgrounds and depth: choose functional surfaces (crisp neutrals for reading clarity, layered depth and subtle borders for elevation) aligned with tone. Avoid unconsidered solid fills and gratuitous textures alike.
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.
- yesterday Changed · +8 lines 8ecc00ddab7c
- 1mo ago First seen · 84 lines · 47 tokens per session scan A 309c229e2d47
common-ui-design is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 47 tokens to every session and 1,044 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 2026-08-30.
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