threejs-fundamentals

Three.js scene setup, cameras, renderer, Object3D hierarchy, coordinate systems. Use when setting up 3D scenes, creating cameras, configuring renderers, managing object hierarchies, or working with transforms.

Quality

81%

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Passed

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The canonical home for this skill is threejs-fundamentals in CloudAI-X/threejs-skills

Quality

Content

78%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A highly actionable, executable fundamentals reference with excellent code coverage, but it is a long monolithic wall of inline API reference (especially Math Utilities) that would benefit from being split into a separate reference file for progressive disclosure and token efficiency.

Suggestions

Move the Math Utilities section (Vector3/Matrix4/Quaternion/Euler/Color/MathUtils method listings) into a references/ file (e.g. MATH_API.md) and keep only a couple of key examples inline, linking out for the rest.

Trim exhaustive method enumerations (e.g. every Vector3/Matrix4 method) down to the non-obvious or commonly-needed ones, since Claude already knows standard vector/matrix APIs.

Consider extracting the full per-class API blocks (Cameras, WebGLRenderer options, Object3D properties) into a references/CLASSES.md so SKILL.md stays a concise overview pointing one level deep.

Dimension	Reasoning	Score
Conciseness	The body is mostly terse code with one-line descriptions and assumes competence (no 'what is Three.js' padding), but the exhaustive inline method enumerations for Vector3/Matrix4/Quaternion/Euler/Color/MathUtils push the token budget and read like API reference material Claude largely already knows.	4 / 5
Actionability	Nearly every section is copy-paste-ready, executable JavaScript — the Quick Start runs as-is and Core Classes/Common Patterns give complete working snippets covering the common cases.	5 / 5
Workflow Clarity	Sequenced patterns (Proper Cleanup, Clock for Animation, Responsive Canvas, Loading Manager) are clear and ordered, and no destructive/batch operations require validation checkpoints; it stops short of 5 only because there is no explicit multi-step workflow with error-recovery feedback loops.	4 / 5
Progressive Disclosure	Section headers give decent structure, but the file is a single ~480-line monolith with a large inline Math Utilities API reference that belongs in a separate reference file, and no bundle files (references/scripts/assets) exist to offload it.	3 / 5
	Total	16 / 20 Passed

Description

83%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A well-constructed description that clearly states capabilities and provides an explicit, multi-phrase 'Use when' trigger. Its only real weakness is trigger-term breadth (no literal 'Three.js' keyword) and minor overlap with sibling threejs skills.

Dimension	Reasoning	Score
Specificity	Names several concrete capabilities — 'scene setup, cameras, renderer, Object3D hierarchy, coordinate systems' — but they are domain objects/concepts rather than the comprehensive verb-based action list (e.g. 'extract/fill/merge') seen at score 5, and coverage omits items the body actually teaches (materials, lighting, math utils).	4 / 5
Completeness	It explicitly answers both 'what' (the leading capability list) and 'when' (a concrete 'Use when...' clause with multiple trigger phrases), matching the score-5 anchor structure.	5 / 5
Trigger Term Quality	The 'Use when setting up 3D scenes, creating cameras, configuring renderers, managing object hierarchies, or working with transforms' clause supplies good natural phrases a user would say, but it lacks the explicit keyword 'Three.js' itself and synonym/extension variations needed for a 5.	4 / 5
Distinctiveness Conflict Risk	'Three.js' is a clear niche with distinct 3D triggers, but sibling skills listed in See Also (threejs-geometry, threejs-materials, threejs-lighting) create minor overlap risk around transforms/object hierarchies rather than the minimal-conflict profile of a 5.	4 / 5
	Total	17 / 20 Passed

Validation

100%

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Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository: calesthio/OpenMontage
Path: .agents/skills/threejs-fundamentals/SKILL.md
Commit: 1bab711

Reviewed: about 20 hours ago

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