# Prototype (agent skill)

> Prototype is an agent skill (a SKILL.md file) from emilkowalski/skills. Build multiple genuinely different versions of a UI piece you describe, rendered behind a visual picker so you can flip through them live and promote the one that feels right. It works with Claude Code and has 43,964 GitHub stars across a repository of 13 listed skills.

Build multiple genuinely different versions of a UI piece you describe, rendered behind a visual picker so you can flip through them live and promote the one that feels right. Only runs when explicitly invoked; it does not trigger on its own. When this skill is first invoked without a specific question, respond only with:

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/emilkowalski/skills |
| Skill path | skills/prototype/SKILL.md |
| Skill name | prototype |
| GitHub stars | 43,964 |
| Installs on skills.sh | 130,171 |
| License | MIT |
| Skills in repo | 13 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code |
| Category | Design & frontend |
| Last commit | Oct 2, 2026 |

## When it triggers

- invoked; it does not trigger on its own.

## Add this skill

### Claude Code

```sh
git clone --depth 1 https://github.com/emilkowalski/skills.git
cp -r skills/skills/prototype ~/.claude/skills/prototype   # personal, or .claude/skills in a project
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/emilkowalski/skills.git
cp -r skills/skills/prototype .agents/skills/prototype   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/emilkowalski/skills.git
cp -r skills/skills/prototype .cursor/skills/prototype   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/emilkowalski/skills/prototype

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