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 flitzrrr/frontend-design-skills --skill ux-designgit clone --depth 1 https://github.com/flitzrrr/frontend-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/flitzrrr/frontend-design-skills/ux-design)<a href="https://agentmods.dev/skills/flitzrrr/frontend-design-skills/ux-design"><img src="https://agentmods.dev/badge/skills/flitzrrr/frontend-design-skills/ux-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/flitzrrr/frontend-design-skills/ux-design"><img src="https://agentmods.dev/badge/skills/flitzrrr/frontend-design-skills/ux-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 | $0.00037 | $0.01414 |
| Opus 5 | $0.00018 | $0.00707 |
| Sonnet 5 | $0.00007 | $0.00283 |
| Haiku 4.5 | $0.00004 | $0.00141 |
Grade A, and why
ux-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.
How it starts
The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UX Design
Systematically designing user experiences -- from strategy to validated interaction.
Scope
Use this skill when: You are planning user research, creating personas, defining information architectures, documenting user flows, designing interaction patterns, or auditing existing products for UX quality.
Principles
1. The User Determines the Design -- Not the Designer
Every design decision is based on real user data. Assumptions without validation are speculation.
2. Design Experiences, Not Surfaces
UX encompasses the entire interaction -- from first perception to long-term usage.
3. Simplicity Beats Completeness
One feature that everyone understands is more valuable than ten features that nobody can find.
4. Emotions Are Measurable Success Factors
Positive experiences generate trust and return visits. UX is directly business-critical.
5. Iteration Over Perfection
Rapid prototyping, early testing, and continuous improvement beats extended planning phases.
Rules
The 5 Planes of User Experience (Garrett Model)
- DO: Work from bottom to top: Strategy > Scope > Structure > Skeleton > Surface.
- DO: At Plane 1 (Strategy), define: Who are the users? What are their goals? What are the business objectives?
- DO: At Plane 2 (Scope), prioritize features by user need, not by stakeholder wishes.
- DON'T: Jump directly to visual design (Plane 5) without defining the underlying planes.
User Research
- DO: Conduct at least 5 user interviews or usability tests BEFORE design.
- DO: Create data-driven personas: name, demographics, goals, pain points, context.
- DO: Use empathy maps as a quick format: What does the user think, feel, say, and do?
- DON'T: Create personas based on team assumptions. At least 3 real data points per persona.
- DON'T: Test only with colleagues. Always test with the actual target audience.
Information Architecture (IA)
- DO: Structure content according to the users' mental model, not the organizational structure.
- DO: Conduct card sorting to validate the content structure.
- DO: Keep navigation depth shallow: max. 3 clicks to reach target content.
- DO: Label navigation items in user language, not in industry jargon.
- DON'T: Use mega-menus with more than 7 main categories (Miller's Law: 7 +/- 2).
What ships with it
1 file 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 · 141 lines · 37 tokens per session scan A f503edd8b642
ux-design is a skill published in the GitHub repository flitzrrr/frontend-design-skills (5 stars, last pushed 5mo ago), licensed MIT. It adds 37 tokens to every session and 1,414 once invoked, about $0.0002 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.
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