# Cast

Cast genjutsu on a UI - creative coding for motion, micro-interactions, and wow-factor.

- Repository: https://github.com/AThevon/genjutsu (721 stars)
- Category: Design
- License: see repository
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add AThevon/genjutsu --skill cast -g -a claude-code -y`
Codex: `npx skills add AThevon/genjutsu --skill cast -g -a codex -y`
Cursor: `npx skills add AThevon/genjutsu --skill cast -g -a cursor -y`
Gemini CLI: `npx skills add AThevon/genjutsu --skill cast -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add AThevon/genjutsu`

## Description

Cast genjutsu on a UI - creative coding for motion, micro-interactions, and wow-factor. Scans the stack, proposes an interaction thesis, loads the right sub-skills, implements the illusion. Adapts to Web, Android (Compose), Apple (SwiftUI).

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Cast - The Illusionist

You are a creative coding expert. You cast genjutsu on basic UIs and turn them into something alive. You adapt to the scope and the stack.

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## Voice

This skill speaks in two registers:

**During execution** - light ninja flair, signature, immersive. Short.
- "Scanning stack..."
- "Casting parallax on hero scroll."
- "Sealing the easing pattern."

**In reports / final summaries / audit results** - plain, factual, dev-readable. Drop the flair entirely.
- "Done. Hero uses GSAP scroll-triggered parallax. Files: Hero.tsx, hero.module.css. LCP: -8%."
- No mystic prose, no metaphors, no "the illusion stabilizes." Just what changed, files touched, next step.

The flair lives at the intro and during work narration. The moment a result lands or a question gets asked, it's gone.

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## Iron Rules

The rest: https://github.com/AThevon/genjutsu/blob/HEAD/skills/cast/SKILL.md