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Three.js Builder Skill · notque | DecimalAI

frontendby notque

Three.js Builder Skill

notque/threejs-builder

Source notque/vexjoy-agent ↗License MIT

Three.js app builder: imperative, React Three Fiber, and WebGPU in 4 phases.

SkillScore48Maintained

Automatic

Frontend / UI pack

Last verified 8/20/2026

What it changes

Passed 11 of 22 test cases with the skill, and 7 of 22 without it.

Without skill30%

With skill48%

Checks it passed that the model alone missed

Executes morph target updates inside renderer.setAnimationLoop.
Includes Phase 1 Design scene plan documentation before writing WebGPU code.
Identifies Imperative as selected paradigm based on vanilla Three.js request.

and 2 more in the full report

5 fixed6 passed either way11 still failing1 broke

Pass-rate lift: +17 pp
Tokens: +97%
Agent turns: 0%
Response time: +15%

Model gemini-3.6-flashMeasured 8/20/2026v111 of 23 cases passed with skill · 22 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/notque-threejs-builder/SKILL.md https://app.decimal.ai/s/notque-threejs-builder/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add notque-threejs-builder, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/notque-threejs-builder/ and pins it in .decimal/skills.lock

decimalai skills add notque-threejs-builder

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/notque-threejs-builder/SKILL.md https://app.decimal.ai/s/notque-threejs-builder/SKILL.md

Raw file: /s/notque-threejs-builder/SKILL.md ↗ · machine-readable summary at /s/notque-threejs-builder.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

I am creating a WebXR immersive VR experience using native WebXR Device API (`navigator.xr.requestSession('immersive-vr')`) directly in C++ via WebAssembly. Provide the native session initialization.

What was checked, without and with the skill
Checked	Without skill	With skill
Declines applying web 3D browser scene builder patterns to native C++ WebAssembly WebXR sessions.	Missed	Passed
Recommends using native WebXR initialization standards.	Passed	Passed

case-06 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md157 lines12 files

Three.js Builder Skill

Overview

This skill builds complete Three.js web applications using a Phased Construction pattern with four phases: Design, Build, Animate, Polish. It supports three paradigms — imperative Three.js, React Three Fiber (R3F), and WebGPU — detected automatically from project context. Only the relevant paradigm's reference is loaded.

Scope: Use for 3D web apps, interactive scenes, WebGL/WebGPU visualizations, R3F declarative 3D, and product viewers. For game engines, 3D model creation, VR/AR experiences, or CAD workflows, use a more specialized skill.

Reference Loading Table

Signal	Load These Files	Why
`@react-three/fiber`, `r3f`, `drei`, `useFrame`, `<Canvas>`, `<mesh>`, React project with 3D	`react-three-fiber.md`	React Three Fiber
`WebGPURenderer`, `TSL`, `tsl`, `compute shader`, `wgsl`, `node material`, WebGPU mentioned	`webgpu.md`	WebGPU
Standalone HTML, CDN imports, `new THREE.Scene()`, no React, vanilla JS/TS	`advanced-topics.md` (load as needed)`	Imperative
Game project: `EventBus`, `GameState`, player controller, enemies, scoring, multiple game systems	`game-patterns.md` (alongside paradigm reference)`	Game architecture
GLTF/GLB model loading, `.glb` files, animated characters, skeletal rigs, model import	`gltf-loading.md` (alongside paradigm reference)`	GLTF loading
`references/build-recipes.md`	`build-recipes.md`	Phase 2/3 build, error diagnosis
`references/advanced-topics.md`	`advanced-topics.md`	Imperative paradigm
`references/react-three-fiber.md`	`react-three-fiber.md`	R3F paradigm
`references/webgpu.md`	`webgpu.md`	WebGPU paradigm
`references/visual-polish.md`	`visual-polish.md`	Visual quality signal
`references/gltf-loading.md`	`gltf-loading.md`	GLTF/GLB model loading signal
`references/game-patterns.md`	`game-patterns.md`	Game project signal
`references/game-architecture.md`	`game-architecture.md`	Game project signal
`references/shader-patterns.md`	`shader-patterns.md`	Custom GLSL / visual effects
`references/performance-patterns.md`	`performance-patterns.md`	Performance / many objects
`references/advanced-animation.md`	`advanced-animation.md`	Animation systems / skeletal rigs

Instructions

Phase 1: DESIGN

Goal: Detect the paradigm, understand what the user wants, and select appropriate components.

Core Constraints:

Build only what the user asked for — no speculative features or "while I'm here" additions
Detect the paradigm before selecting components — imperative, R3F, and WebGPU have fundamentally different patterns; using the wrong one is the #1 source of bugs

Track record

Benchmark

11 / 22

test cases passed, vs 7 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

notque / vexjoy-agent

skills/frontend/threejs-builder/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 11 files

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Three.js Builder Skill

Overview

Reference Loading Table

Instructions

Phase 1: DESIGN

Track record

Benchmark

Adoption

SkillSafety

Source

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