genjutsu

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genjutsu logo

genjutsu

The art of illusion. Cast motion. Paint signatures.

genjutsu.athevon.dev  ·  Documentation

Latest release MIT license Documentation

Creative coding skills for Claude Code and claude.ai - 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.

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

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, 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
  • 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
  • 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

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 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

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

Architecture

genjutsu/
├── .claude-plugin/
│   ├── plugin.json
│   └── marketplace.json
├── skills/
│   ├── cast/SKILL.md                       <- orchestrator (Illusionist)
│   ├── paint/SKILL.md                      <- orchestrator (Master Painter)
│   └── _jutsu/                             <- internal sub-skills (never invoked directly)
│       ├── motion-principles/              <- foundation, always loaded
│       ├── mobile-principles/              <- shared (touch contexts)
│       ├── desktop-principles/             <- shared (pointer/keyboard contexts)
│       ├── design-audit/                   <- shared (audit pipeline)
│       ├── ui-ux-pro-max/                  <- shared (design intel)
│       ├── gsap/                           <- web stack
│       ├── framer-motion/                  <- web stack
│       ├── css-native/                     <- web stack
│       ├── threejs-r3f/                    <- web stack
│       ├── canvas-generative/              <- web stack
│       ├── compose-motion/                 <- Android
│       ├── compose-graphics/               <- Android (M3 Expressive, AGSL, Canvas)
│       ├── compose-multiplatform/          <- KMP/CMP
│       ├── swiftui-motion/                 <- Apple
│       └── swiftui-graphics/               <- Apple (Metal, Liquid Glass, Canvas)
├── package-for-claude-ai.sh
├── CHANGELOG.md
└── README.md

Orchestrators detect the environment at runtime (Claude Code plugin directory or claude.ai /mnt/skills/user/) and pick what to load based on the SCAN phase. Sub-skills in _jutsu/ are loaded by orchestrator according to detected stack and selected scope - mobile-principles and desktop-principles are auto-loaded when context matches (touch target vs pointer/keyboard target). The underscore prefix keeps sub-skills internal so they never get invoked directly.

Voice

The skills speak in two registers:

  • During execution: light ninja flair, short, signature ("Casting parallax on hero scroll.", "Brushing the color palette.")
  • In reports / final summaries / audits: plain, factual, dev-readable. No mystic prose, no metaphors. Just what changed, files touched, next step.

Credits

Built by studying the best creative coding resources available.

Design intelligence

Web foundation

Android / Compose (v2.0)

Apple / SwiftUI (v2.0)

UX / motion theory

License

MIT

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