Agent skill

UX Evaluator

by aiskillstore in aiskillstore/marketplace

This skill should be used when evaluating UI components against UX best practices.

No licenceAuto-check passed

Install UX Evaluator

skills CLI
$ npx skills add aiskillstore/marketplace --skill ux-evaluator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace ux-evaluator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/92bilal26/ux-evaluator .claude/skills/ux-evaluator && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
ux-evaluator
GitHub stars
430
Token cost
~1.7k tokens
SKILL.md length
584 words
Files
3 (incl. references)
Skills in repo
1,044
Repo updated
First seen
Licence
None found

At a glance

This skill should be used when evaluating UI components against UX best practices.

  • Reviewing buttons
  • SKILL.md covers Overview, When to Use This Skill, Evaluation Framework and Component-Specific Guidelines, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Navigation elements

What it does

UX Evaluator is an agent skill from aiskillstore/marketplace. This skill should be used when evaluating UI components against UX best practices. Use for reviewing buttons, navigation elements, spacing, visual hierarchy, or any interface element. Provides a systematic 3-dimension framework (Position, Visual Weight, Spacing) aligned with industry standards (Balsamiq, Nielsen heuristics). Invoke when user asks to "review UX", "check button design", "evaluate layout", or references design guidelines.

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/balsamiq-button-principles.md` and `skill-report.json`).

The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Reviewing buttons
  • Navigation elements
  • Visual hierarchy
  • Any interface element

Example prompts

  • “review UX”
  • “check button design”
  • “evaluate layout”
  • “/ux-evaluator”

What it can do on your machine

Read from SKILL.md and the folder at commit 755bc35. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

UX Evaluator loads about 1.7k tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 113 tokens; SKILL.md has 584 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~113
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 584 words (~1,691 tokens).

“Systematically evaluate UI components against established UX principles using a 3-dimension framework. Transform subjective design feedback into actionable, evidence-based recommendations by comparing against industry conventions and authoritative sources.”

— opening of SKILL.md by aiskillstore
name
ux-evaluator

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (references) in skills/92bilal26/ux-evaluator of aiskillstore/marketplace.

  • SKILL.md
  • references/balsamiq-button-principles.md
  • skill-report.json

Open the folder on GitHubat commit 755bc35

Compare with similar skills

UX Evaluator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

UX Evaluator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
UX Evaluator this skillaiskillstore/marketplace430—~1.7kAutomated safety check: PassNone
Arize Evaluatorgithub/awesome-copilot40k1 repos~8.1kAutomated safety check: NotesMIT
LLM Evaluationdavila7/claude-code-templates32k12 repos~3.5kAutomated safety check: PassMIT
Agent Evaluationsickn33/agentic-awesome-skills47k1 repos~2kAutomated safety check: PassMIT
EvaluatorsArize-ai/phoenix12k—~1.7kAutomated safety check: PassCustom licence
Agent Evaluation Reportingsickn33/agentic-awesome-skills47k1 repos~2.1kAutomated safety check: PassMIT

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Questions about UX Evaluator

What does UX Evaluator do?

This skill should be used when evaluating UI components against UX best practices. UX Evaluator is an agent skill from aiskillstore/marketplace. This skill should be used when evaluating UI components against UX best practices.

When should I use UX Evaluator?

UX Evaluator fits situations like: reviewing buttons; navigation elements; visual hierarchy; any interface element.

How do I install UX Evaluator in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill ux-evaluator -a claude-code`. Or copy the skill folder (skills/92bilal26/ux-evaluator in aiskillstore/marketplace) into .claude/skills/ux-evaluator in your project. Claude Code loads it when a task matches its description.

How do I install UX Evaluator in Codex?

Run `npx skills add aiskillstore/marketplace --skill ux-evaluator -a codex`. Or copy the skill folder (skills/92bilal26/ux-evaluator in aiskillstore/marketplace) into .agents/skills/ux-evaluator in your project. Codex loads it when a task matches its description.

Can I use UX Evaluator in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill ux-evaluator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ux-evaluator, .gemini/skills/ux-evaluator, .github/skills/ux-evaluator and .opencode/skills/ux-evaluator in your project.

What does UX Evaluator need to run?

SKILL.md names no scripts, command-line tools or credentials: UX Evaluator is instructions for the agent only.

Does UX Evaluator access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is UX Evaluator safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does UX Evaluator use?

No licence was found for UX Evaluator or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does UX Evaluator use?

About 1.7k tokens (SKILL.md is roughly 6.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 609 tokens, read only when the agent opens those files.

What are the alternatives to UX Evaluator?

Skills that share tags, products or a category with UX Evaluator: Arize Evaluator (github/awesome-copilot, 40k stars), LLM Evaluation (davila7/claude-code-templates, 32k stars), Agent Evaluation (sickn33/agentic-awesome-skills, 47k stars) and Evaluators (Arize-ai/phoenix, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains UX Evaluator?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 9, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.