ClaudSkills / Product / design-system-ui

Proto

Q: What is a Claude Code skill and how does the Proto 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. Proto 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: 2026-09-28

tool:figma

Rebuilds a Figma design as code so that input, validation, state, and branching actually work in a single HTML file. Not a click-through screenshot demo — something you press to check the UX and get a feel for the implementation spec. The pipeline: settle scope by interview, read Figma faithfully (structure, exact labels, visual tokens), build as vanilla single-file HTML, then verify real behavior in a browser. Triggers - "/fig:proto", "make a working prototype", "make this design actually clickable", "동작 프로토타입 만들어", "프로토타이핑 해줘", "실제로 눌러보고 입력되게".

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Rebuilds in code what is drawn in Figma, producing a single HTML prototype where form input, validation, state changes, and dynamic branching actually work. Not a click-through demo of screenshots but something for checking behaviour and getting a feel for the implementation spec — you type a real value and watch the save land in the list.

What this skill does

Proto 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/proto/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Proto 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 196,000+ 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/proto
curl -L https://claudskills.com/skills/proto/SKILL.md \
  -o ~/.claude/skills/proto/SKILL.md

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

Skills live at ~/.claude/skills/proto/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\proto\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 Proto Claude Code skill?

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

What does the Proto 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 Proto skill?

Use Proto 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 Proto" or describe the task and let Claude pick). Browse related skills at /category/product/.

What is a Claude Code skill and how does the Proto 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. Proto 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/sjdonado/dotfiles/blob/HEAD/agents/skills/proto/SKILL.md
Author: sjdonado

Cite this skill

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

APA

sjdonado. (2026). Proto [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/proto/

BibTeX

@misc{proto-2026,
  author    = {sjdonado},
  title     = {Proto [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/proto/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/proto.svg)](https://claudskills.com/skills/proto/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/proto/#security)

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Browse all Product skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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