Usability Test

Q: What is a Claude Code skill and how does the Usability Test skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Usability Test is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Product · Sub-category: ux-research · Last updated: 2026-06-15

Use to validate that a design actually works for real people — when a flow is built or prototyped and you need to know if users can do the job. Watch them attempt real tasks, stay silent, and let behavior (not opinion) surface the problems.

From the source SKILL.md

The cheapest way to find out a design fails is to watch one person try to use it. Five users surface ~85% of usability problems (Nielsen) — so test early, test small, test often, fix, and test again. Diminishing returns past ~5 mean it's better to run three tests of five than one test of fifteen.

What this skill does

Usability Test is a community-contributed Claude Code skill in the ux-research sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/usability-test/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Usability Test Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 117,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/usability-test
curl -L https://claudskills.com/skills/usability-test/SKILL.md \
  -o ~/.claude/skills/usability-test/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/usability-test/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/usability-test/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\usability-test\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Usability Test Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/usability-test/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Usability Test skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Usability Test skill?

Use Usability Test when your Claude Code task falls under the Product category — specifically in the ux research area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Usability Test" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Usability Test skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Usability Test is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/wastedcode/truecast/blob/HEAD/personas/ui-ux-designer/core/skills/usability-test/SKILL.md
License: MIT
Author: wastedcode

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

wastedcode. (2026). Usability Test [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/usability-test/

BibTeX

@misc{usability-test-2026,
  author    = {wastedcode},
  title     = {Usability Test [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/usability-test/}
}

Embed this skill

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Badge

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