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 vosslab/vosslab-skills --skill ui-ux-engineergit clone --depth 1 https://github.com/vosslab/vosslab-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/vosslab/vosslab-skills/ui-ux-engineer)<a href="https://agentmods.dev/skills/vosslab/vosslab-skills/ui-ux-engineer"><img src="https://agentmods.dev/badge/skills/vosslab/vosslab-skills/ui-ux-engineer/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/vosslab/vosslab-skills/ui-ux-engineer"><img src="https://agentmods.dev/badge/skills/vosslab/vosslab-skills/ui-ux-engineer.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 | $0.00048 | $0.00859 |
| Opus 5 | $0.00024 | $0.00430 |
| Sonnet 5 | $0.00010 | $0.00172 |
| Haiku 4.5 | $0.00005 | $0.00086 |
Grade A, and why
ui-ux-engineer 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 9d 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI/UX Engineer
Overview
Use this skill to review and improve the user experience of any interface. This skill is framework-agnostic and focuses on design quality, interaction logic, and usability. It applies equally to desktop, web, and mobile surfaces.
Workflow
- Detect project shape.
- New or greenfield UI: establish the user goal and primary flow first, choose a window posture or page layout, and defer visual polish until the interaction structure is sound.
- Improving an existing interface: read the existing surface first, identify the main friction points across hierarchy, interaction quality, and state coverage, then scope changes by user impact.
- Read
references/project_workflow.mdfor both paths.
- Classify the UX task and route it.
- Read
references/task_selection.mdwhen the request is underspecified or several UX framings fit. - Consult
references/topic_index.mdto route the problem to the UX task, default approach, common failure modes, audit fixtures, and the best local book. - Determine what the user is trying to accomplish and what states must be handled: loading, empty, valid, invalid, busy, success, and failure.
- Identify the main workflow path and any secondary paths.
- Review visual hierarchy and layout.
- Make visual hierarchy obvious with spacing, grouping, alignment, and restrained emphasis.
- Keep forms short, labels explicit, and primary actions visually dominant.
- Check that the screen communicates its purpose in three seconds.
- Check that the main action is obvious and visually dominant.
- Read
references/ui_ux_review.mdfor the full review checklist covering hierarchy, interaction quality, validation, state coverage, and accessibility.
- Review interaction quality.
- Give immediate feedback for user actions.
- Prevent errors before showing errors.
- Keep destructive actions explicit and reversible when practical.
- Support keyboard flow, sensible tab order, and accessible names or tooltips where needed.
- Check whether busy work has been removed from the user's path.
What ships with it
9 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.
- agents/openai.yaml 201 B
- references/design_books.md 4.5 KB
- references/local_books.md 1.9 KB
- references/project_workflow.md 4.2 KB
- references/reference_survey.md 6.0 KB
- references/task_selection.md 3.0 KB
- references/testing_and_oracles.md 4.7 KB
- references/topic_index.md 5.3 KB
- references/ui_ux_review.md 4.3 KB
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.
- 9d ago First seen · 80 lines · 48 tokens per session scan A 33065172201d
ui-ux-engineer is a skill published in the GitHub repository vosslab/vosslab-skills (2 stars, last pushed 13d ago), licensed MIT. It adds 48 tokens to every session and 859 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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