ux

ux is a skill for Claude Code, Codex from JHostalek/dotclaude. It costs 24 tokens per session (309 once invoked), scanned A, original, CC0-1.0.

A usability review of a website page or application flow, focused on confusion, friction, accessibility-related fundamentals, and other user-experience problems.

In plain words
What is it for?
Use it to assess a page or flow, rate relevant usability areas, document serious findings, suggest specific fixes, and define tests for those fixes.
Why use it?
It identifies issues that can make a page difficult or frustrating to use before changes are made.

Skill for Claude CodeCodex

Part of the jhostalek-skills plugin — 32 skills, 12 agents shipped together

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.

agentmods
npx agentmods add skills/jhostalek/dotclaude/ux
Any agent
npx skills add JHostalek/dotclaude --skill ux
Clone the repo
git clone --depth 1 https://github.com/JHostalek/dotclaude

Made for: Claude Code, Codex.

Or install jhostalek-skills, the plugin that ships this one along with the rest of its 32 skills, 12 agents.

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.

agentmods badge for ux

README.md
[![agentmods](https://agentmods.dev/badge/skills/jhostalek/dotclaude/ux.svg)](https://agentmods.dev/skills/jhostalek/dotclaude/ux)
Your own site
<a href="https://agentmods.dev/skills/jhostalek/dotclaude/ux"><img src="https://agentmods.dev/badge/skills/jhostalek/dotclaude/ux.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 309 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00024 $0.00309
Opus 5 $0.00012 $0.00154
Sonnet 5 $0.00005 $0.00062
Haiku 4.5 $0.00002 $0.00031

Measured 4d ago against content hash 2fce2415cb90, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ux 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 4d 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.

skills/ux/SKILL.md · 39 lines

What it actually says

page_path = $ARGUMENTS

page_path provided → focus on that page/component. Otherwise evaluate entire application UI.

Approach

Match evaluation depth to scope: single component → the 2-3 most relevant dimensions; full page → every applicable fundamental; entire app → 3 highest-traffic flows first (a whole-app sweep produces more findings than anyone acts on). Every applicable fundamental gets evaluated even when another lens overlaps it.

Gather context from at least one source, in order of preference: live browser navigation, screenshots, code review. Combine when available.

Apply the dimensions below.

!cat "${CLAUDE_SKILL_DIR}/ui-evaluation.md"

Output

Scores

Rate each evaluated dimension 1-5 (1=broken, 5=excellent). Compact table. Overall UX score = average.

Findings

Critical (blocks primary task): Issue → file:line → specific fix High (major frustration): Issue → location → fix What Works: Preserve these during fixes Low (polish): Brief list

Validation

For each critical/high fix: what to test (user action) and what success looks like (behavior or outcome).

After presenting, offer to implement the top 3 critical/high fixes. Change nothing before the user accepts.

Files

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.

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.

  1. 4d ago First seen · 39 lines · 24 tokens per session scan A 2fce2415cb90

Subscribe to this mod's changes

ux is a skill published in the GitHub repository JHostalek/dotclaude (11 stars, last pushed 1mo ago), licensed CC0-1.0. It adds 24 tokens to every session and 309 once invoked, about $0.0001 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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