ClaudSkills / Product / design-system-ui

Phase 3 Mockup

Q: What is a Claude Code skill and how does the Phase 3 Mockup 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. Phase 3 Mockup 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: design-system-ui · Last updated: 2026-05-21

Create UI/UX mockups and HTML/CSS/JS prototypes without a designer. Triggers: mockup, prototype, wireframe, UI design, 목업, 프로토타입.

About this skill (catalog notes)

Phase 3 Mockup includes pricing or quota commentary; 12 code blocks for direct copy-paste. The SKILL.md runs to about 961 words, in the catalog's typical mid-range.

Original author: popup-studio-ai
Indexed lastmod: 2026-05-21
Catalog position: Product · design-system-ui
Indexed related skills: 10

How Phase 3 Mockup fits the catalog

Phase 3 Mockup sits in the Product category under the design-system-ui sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

What this skill does

Phase 3 Mockup is a community-contributed Claude Code skill in the design-system-ui sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/phase-3-mockup/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Phase 3 Mockup 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 116,000+ 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/phase-3-mockup
curl -L https://claudskills.com/skills/phase-3-mockup/SKILL.md \
  -o ~/.claude/skills/phase-3-mockup/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/phase-3-mockup/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/phase-3-mockup/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\phase-3-mockup\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 Phase 3 Mockup Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/phase-3-mockup/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Phase 3 Mockup skill do?

Create UI/UX mockups and HTML/CSS/JS prototypes without a designer. Triggers: mockup, prototype, wireframe, UI design, 목업, 프로토타입.

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 Phase 3 Mockup skill?

Use Phase 3 Mockup when your Claude Code task falls under the Product category — specifically in the design system ui 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 Phase 3 Mockup" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Phase 3 Mockup 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. Phase 3 Mockup 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/popup-studio-ai/bkit-gemini/blob/HEAD/skills/phase-3-mockup/SKILL.md
Author: popup-studio-ai

Cite this skill

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

APA

popup-studio-ai. (2026). Phase 3 Mockup [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/phase-3-mockup/

BibTeX

@misc{phase-3-mockup-2026,
  author    = {popup-studio-ai},
  title     = {Phase 3 Mockup [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/phase-3-mockup/}
}

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Badge

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