What is ux-audit-skill?

A workflow for reviewing existing interfaces, URLs, screenshots, design files, or source code for usability, accessibility, responsive behavior, and visual problems.

It is for UX audits, severity reports, refactor briefs, and before-and-after regression checks.

It turns observed interface issues into ranked findings and practical changes, while distinguishing what the available evidence can prove.

ux-audit-skill — Skill for Codex by sergekostenchuk

Install

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.

Any agent

npx skills add sergekostenchuk/ui-ux-agent-skill-system --skill ux-audit-skill

Clone the repo

git clone --depth 1 https://github.com/sergekostenchuk/ui-ux-agent-skill-system

Made for: Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill/github.svg)](https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/ux-audit-skill)

Your own site

<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.

Your own site · 80×15

<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>

Per session 102 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 544 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00051	$0.00272
Sonnet 5	$0.00020	$0.00109
Haiku 4.5	$0.00010	$0.00054

Measured 8d ago against content hash 15d69283a32f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

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 8d 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.

core/skills/ux-audit-skill/SKILL.md · 55 lines

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.md before 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, or Manual.

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:

Files

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.

Changes

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.

8d ago First seen · 55 lines · 102 tokens per session scan A 15d69283a32f

Subscribe to this mod's changes

ux-audit-skill is a skill published in the GitHub repository sergekostenchuk/ui-ux-agent-skill-system (23 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 102 tokens to every session and 544 once invoked, about $0.0005 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 2026-09-03.

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ux-audit-skill