genjutsu

Creative coding skills for Claude Code, claude.ai and Cowork - transforms any interface from functional to exceptional through motion design, interaction patterns, and visual systems. Covers Web (React, Vue, Svelte, vanilla CSS, Three.js, Canvas), Android (Jetpack Compose, Compose Multiplatform), and Apple (SwiftUI iOS + macOS).

v3.0 - rebrand: this plugin used to be called creative-excellence. The skills /creative-excellence:creative-excellence and /creative-excellence:design-excellence are now /genjutsu:cast and /genjutsu:paint. See CHANGELOG.md for the migration steps if you had v2.x installed.

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Documentation

genjutsu.athevon.dev is built with genjutsu itself. The ink on it is painted by your own scroll, and every mark is drawn in code, no image assets.

Page	What is in it
Overview	What genjutsu is, how the pieces fit, the shortest path to seeing something move
Install	Both surfaces, verifying the install, updating, uninstalling
cast	The seven-stage pipeline, its two validation gates, how to write a good request
paint	The five phases, the two theses, what lands in your repo
Modules	All fifteen, by family: foundations, web, Apple, Android
Principles	The rules the skills enforce, and why each one exists
FAQ	Plans, dependencies, cast against paint, what to check when output feels generic

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Skills

/genjutsu:cast - The Illusionist

Takes any creative request and makes it exceptional. Adapts to your stack and scope.

Pipeline: Scan stack -> Evaluate scope -> Propose interaction thesis -> Load sub-skills -> Implement -> Mini-audit

• Detects your dependencies automatically across web (GSAP, Motion / Framer Motion, Three.js, CSS), Android (Jetpack Compose, Compose Multiplatform) and Apple (SwiftUI iOS / macOS)
• Proposes an interaction thesis before writing a single line of code, and asks how you want to see it first
• Scales from a single hover effect to a full scroll-driven page or a Compose SharedTransitionLayout flow
• Runs a quick audit on exit: reduced-motion, exit animations, recomposition, hitches, layout performance

/genjutsu:paint - The Master Painter

Builds a complete visual universe from scratch. Brainstorm first, implement second.

Pipeline: Brainstorm -> Define visual + interaction thesis -> Generate design system -> Implement -> Full audit

• Mandatory creative direction session before any code
• Shows the theses and the design system in the format you pick, instead of asking you to approve a palette as a list of hex codes
• Generates a persistent stack-aware MASTER.md design system (Tailwind/CSS for web, Theme.kt for Compose, Color+App.swift for SwiftUI, commonMain for CMP)
• Full audit at the end: motion gaps, accessibility, color consistency, responsive, performance, native hitches
• Optional MCP integration (Stitch, Nano Banana, 21st.dev Magic)

When to use which

Situation	Skill
"Add a scroll animation to this section"	/genjutsu:cast
"Make this dropdown feel snappy"	/genjutsu:cast
"Add a snappy spring to this Compose button"	/genjutsu:cast
"Polish the matchedGeometryEffect on this SwiftUI screen"	/genjutsu:cast
"Redesign the entire landing page"	/genjutsu:paint
"Build me a portfolio from scratch"	/genjutsu:paint
"Build a SwiftUI iOS app design system from scratch"	/genjutsu:paint
"Bootstrap a Compose Multiplatform design system"	/genjutsu:paint

Seeing what it proposes

Both skills stop and wait for your approval at a handful of points: the interaction thesis, the variants, the visual identity, the design system. A sentence cannot carry an easing curve and a list of hex codes cannot carry a palette, so before the first of those gates the skill asks how you want to see it.

Mode	What you get
Artifact	A live page. The easing curve plotted with its exact value, an element actually performing the motion with a replay button, the raw numbers, a reduced-motion toggle. For a design system: swatches with their contrast ratios, a real type specimen, the five states of every component.
Live preview	A throwaway route in your own project - real stack, real tokens, real components. On Compose or SwiftUI, a @Preview / #Preview scratch file. Deleted once you have approved.
Inline	The sentence, in the conversation. Still the right answer for a 150ms hover.

You are asked once. The choice holds for the rest of the session, later gates just announce the mode, and you switch by saying so. The preview is always throwaway: it exists to be looked at, never to become the implementation.

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Sub-skills

Internal modules loaded dynamically by the orchestrators. Not invocable directly.

Foundation (always loaded)

Sub-skill	Scope	Files
motion-principles	Timing, easing, cross-platform reduced-motion API, BAD/GOOD do-not rules	SKILL + 3 references

Shared layers (loaded by context)

Sub-skill	Scope	Files
mobile-principles	Touch targets, no-hover doctrine, thumb zones, safe areas, gestures, mobile perf budgets	SKILL + 2 references
desktop-principles	Hover-mandatory, pointer precision, keyboard shortcuts, multi-window, focus management	SKILL + 2 references
design-audit	Multi-stack greps (web/Compose/SwiftUI), bundle size, Layout Inspector, Instruments Hitches	SKILL
ui-ux-pro-max	Design system intelligence (84 styles, 192 palettes, 74 font pairings, 25 charts, 22 stacks)	SKILL + data + scripts

Web stack

Sub-skill	Scope	Files
gsap	Core, timeline, ScrollTrigger, plugins	SKILL + 4 references
framer-motion	Motion and Framer Motion (same library, two package names) - AnimatePresence, layout, gestures, motion values	SKILL + 1 reference
css-native	Scroll-driven, View Transitions, @starting-style	SKILL + 1 reference
threejs-r3f	Three.js, React Three Fiber, shaders, postprocessing	SKILL + 2 references
canvas-generative	Particles, flow fields, noise, fractals, L-systems	SKILL + 1 reference

Android stack

Sub-skill	Scope	Files
compose-motion	animate*AsState, AnimatedVisibility, SharedTransitionLayout, springs, gestures	SKILL + 3 references
compose-graphics	M3 Expressive motion physics, AGSL shaders (Android 13+), Canvas/DrawScope	SKILL + 3 references
compose-multiplatform	KMP/CMP patterns, expect/actual, iOS/Android/Desktop interop	SKILL + 2 references

Apple stack

Sub-skill	Scope	Files
swiftui-motion	withAnimation, transitions, matchedGeometryEffect, PhaseAnimator, KeyframeAnimator, gestures	SKILL + 3 references
swiftui-graphics	Metal shaders (.colorEffect / .layerEffect / .distortionEffect), .visualEffect, Liquid Glass (iOS 26), Canvas	SKILL + 3 references

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Installation

The short version is on the site: genjutsu.athevon.dev/docs/install. The long version, including partial installs, is below.

claude.ai (web/app)

Prerequisites: Plan Pro, Max, Team or Enterprise with "Code execution" enabled.

Option A - single bundle (recommended):

One upload, everything included (router + cast + paint + all sub-skills).

1. Download genjutsu.zip. That link always serves the newest release, so it never goes stale.
2. On claude.ai, go to Customize > Skills > Upload skill and upload genjutsu.zip.
3. Enable the toggle. Done - one skill, both cast and paint pipelines, all sub-skills bundled.

Want to confirm it mounted correctly? Follow the 2-minute smoke test in docs/claude-ai-testing.md.

How it shows up. The bundle installs as a single skill named genjutsu. In a normal chat it appears as one entry - invoke /genjutsu (or just describe your task) and it routes to the cast or paint pipeline internally. Surfaces that expose skills as individual commands (e.g. a code workspace) show /cast and /paint directly. Either way the pipelines need code execution enabled to load their sub-skills. Prefer /cast and /paint as separate entries everywhere? Use Option B.

Option B - individual skills:

Prefer separate skills, or only part of the stack? Upload the individual ZIPs (one per skill). Baseline for everyone: cast, paint, motion-principles, design-audit, ui-ux-pro-max. Then add per stack:

Your stack	ZIPs to upload (in addition to baseline)
Web only	mobile-principles, desktop-principles, gsap, framer-motion, css-native, threejs-r3f, canvas-generative
Android Compose only	mobile-principles, compose-motion, compose-graphics
iOS SwiftUI only	mobile-principles, swiftui-motion, swiftui-graphics
macOS SwiftUI only	desktop-principles, swiftui-motion, swiftui-graphics
Multi-target Apple (iOS + macOS)	mobile-principles, desktop-principles, swiftui-motion, swiftui-graphics
Compose Multiplatform	mobile-principles, compose-motion, compose-graphics, compose-multiplatform, swiftui-motion (if iOS target)

Build from source:

git clone https://github.com/AThevon/genjutsu.git
cd genjutsu
./package-for-claude-ai.sh
# dist/ has genjutsu.zip (the bundle) + 17 individual skill ZIPs

Claude Code (CLI)

Two slash commands, typed inside a Claude Code session:

/plugin marketplace add AThevon/genjutsu
/plugin install genjutsu

Then run /genjutsu:cast or /genjutsu:paint. You can pass the request on the same line: /genjutsu:cast make the pricing cards feel physical on hover.

The marketplace also accepts the full git URL if you prefer it: /plugin marketplace add git@github.com:AThevon/genjutsu.git.

Or as a git submodule in your dotfiles:

git submodule add git@github.com:AThevon/genjutsu.git claude/plugins/genjutsu
ln -sf ~/.dotfiles/claude/plugins/genjutsu ~/.claude/plugins/genjutsu

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Cowork