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 sergekostenchuk/ui-ux-agent-skill-system --skill ux-audit-skillgit clone --depth 1 https://github.com/sergekostenchuk/ui-ux-agent-skill-systemWrote 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/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill)<a href="https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill/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/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill.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 | $0.00102 | $0.00544 |
| Opus 5.5 | $0.00041 | $0.00218 |
| Sonnet 5.5 | $0.00020 | $0.00109 |
| Haiku 4.5 | $0.00010 | $0.00054 |
Grade A, and why
ux-audit-skill 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.
What it actually says
UX Audit Skill
Use this specialist for evidence-backed review of existing UI artifacts. The output is a severity matrix and actionable refactor brief, not a generic design essay.
Operating Modes
review-live-url: audit a reachable URL with available browser/static evidence.review-screenshot: audit image-only context without DOM claims.review-code: audit source files and templates.refactor-brief: convert findings into implementation tasks for another skill.regression-check: compare before/after evidence and remaining risks.
Required Workflow
- Classify available evidence using references/audit-evidence-model.md.
- Apply references/severity-model.md before ranking findings.
- Use assets/audit-report.template.md for audit output.
- Use assets/regression-report.template.md for before/after checks.
- Apply
../../shared/privacy-policy.mdbefore screenshots, Figma, or authenticated state. - If a URL is available, reuse local scripts listed in
../../shared/tool_inventory.json. - Label every finding by evidence type:
DOM,screenshot,source,automated, orManual.
Evidence Boundaries
- Screenshot-only input cannot support DOM, Lighthouse, axe, or runtime claims.
- Source-only input cannot prove rendered layout unless run or screenshot evidence exists.
- Manual findings are allowed but must be labeled
Manual. - Planned tools are not evidence.
Validation
python3 $CODEX_SKILLS_DIR/.system/skill-creator/scripts/quick_validate.py $CODEX_SKILLS_DIR/ux-audit-skill
python3 $CODEX_SKILLS_DIR/senior-skill-architect/scripts/lint_production_skill.py $CODEX_SKILLS_DIR/ux-audit-skill
Output Shape
Audit target:
Evidence available:
Ran:
Skipped:
Severity matrix:
Top fixes:
Verification plan:
Privacy notes:
Residual risk:
What ships with it
8 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 · 55 lines · 102 tokens per session scan A 15d69283a32f
ux-audit-skill is a skill published in the GitHub repository sergekostenchuk/ui-ux-agent-skill-system (32 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 102 tokens to every session and 544 once invoked, about $0.0004 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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