threejs-lighting
Three.js lighting - light types, shadows, environment lighting. Use when adding lights, configuring shadows, setting up IBL, or optimizing lighting performance.
68
83%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
89%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a solid skill description that clearly identifies its niche (Three.js lighting), provides explicit trigger guidance via a 'Use when...' clause, and uses natural keywords users would employ. Its main weakness is that the capability listing is somewhat categorical rather than enumerating specific concrete actions, which slightly reduces specificity.
Suggestions
Expand the capability list with more specific concrete actions, e.g., 'Configure shadow maps, add point/spot/directional lights, set up HDR environment maps for IBL, tune shadow bias and resolution.'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Three.js lighting) and lists some categories (light types, shadows, environment lighting), but doesn't enumerate specific concrete actions like 'add point lights', 'configure shadow maps', or 'set up HDR environment maps'. | 2 / 3 |
Completeness | Clearly answers both 'what' (Three.js lighting - light types, shadows, environment lighting) and 'when' with an explicit 'Use when...' clause listing specific trigger scenarios (adding lights, configuring shadows, setting up IBL, optimizing lighting performance). | 3 / 3 |
Trigger Term Quality | Includes strong natural trigger terms users would say: 'lights', 'shadows', 'IBL', 'lighting performance', 'Three.js', 'environment lighting'. These cover common variations a user would naturally mention. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with a clear niche: Three.js lighting specifically. The combination of Three.js + lighting/shadows/IBL creates a narrow, well-defined scope unlikely to conflict with other skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
77%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a comprehensive and highly actionable Three.js lighting reference with excellent executable code examples covering all light types, shadow configuration, IBL, and common setups. Its main weakness is length - at ~350 lines it's a monolithic reference document that could benefit from splitting detailed per-light-type documentation into a separate reference file while keeping the SKILL.md as a concise overview with the quick start, table, and key patterns.
Suggestions
Split detailed per-light-type API documentation (AmbientLight through RectAreaLight sections) into a separate LIGHT_TYPES.md reference file, keeping only the overview table and quick start in SKILL.md.
Remove trivial descriptions Claude already knows (e.g., 'Like a light bulb', 'Illuminates all objects equally. No direction, no shadows.') to improve conciseness.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is mostly efficient with good code examples and a useful reference table, but it's quite long (~350 lines) and includes some unnecessary commentary (e.g., 'Like a light bulb', 'Like a flashlight or stage light') and inline property listings that Claude already knows. The sheer volume of light type documentation could be split into a reference file. | 2 / 3 |
Actionability | Excellent actionability throughout - every light type has fully executable, copy-paste ready code examples with correct constructor signatures, property access patterns, and complete shadow configuration. The common lighting setups section provides ready-to-use recipes. | 3 / 3 |
Workflow Clarity | The shadow setup section provides a clear 3-step sequence (enable on renderer → enable on light → enable on objects). For a reference-style skill covering light types, the workflows are appropriately clear. The performance tips section provides actionable optimization guidance. No destructive/batch operations require feedback loops here. | 3 / 3 |
Progressive Disclosure | The skill is quite long and monolithic - detailed API reference for every light type is inline rather than split into a separate reference file. The 'See Also' cross-references at the bottom are good, but the body itself would benefit from moving detailed shadow configuration and light type specifics into separate files, keeping SKILL.md as an overview. | 2 / 3 |
Total | 10 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- cloudai-x/threejs-skills
- Commit
b1c6230
- Reviewed
Table of Contents
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