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threejs-animation

Three.js animation - keyframe animation, skeletal animation, morph targets, animation mixing. Use when animating objects, playing GLTF animations, creating procedural motion, or blending animations.

68

Quality

83%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

The canonical home for this skill is threejs-animation in administrakt0r/AI-Agents-Safe-Coding-Skills

SKILL.md
Quality
Evals
Security

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, well-sectioned reference with executable code throughout. Its main weakness is progressive disclosure: the entire body is a single monolithic file that would benefit from splitting detailed material into bundled reference files.

Suggestions

Move the dense API-style sections (KeyframeTrack types, AnimationAction properties, Animation Utilities) into a separate references/ file and link to it from SKILL.md to reduce the inlined footprint.

Split the Procedural Animation Patterns (smooth damping, spring physics, oscillation) into their own reference file, keeping only a brief pointer and one quick-start example inline.

De-duplicate the renderer/clock animation-loop boilerplate by defining one canonical loop pattern up front and referencing it, rather than re-stating requestAnimationFrame/render in multiple sections.

DimensionReasoningScore

Conciseness

Prose is lean and assumes Claude's competence (no basic concept explanations), but the render-loop boilerplate is repeated across sections and some examples overlap, so minor tightening is possible.

4 / 5

Actionability

Nearly every section provides complete, copy-paste-ready JavaScript covering the common cases (clip creation, mixer/action control, GLTF loading, blending, procedural motion).

5 / 5

Workflow Clarity

Multi-step flows like GLTF loading (load -> create mixer -> clipAction -> update loop) are clearly sequenced; no validation checkpoints are needed since animation playback is non-destructive, so no cap applies.

4 / 5

Progressive Disclosure

Section headers give good in-file structure, but at ~550 lines everything is inlined in SKILL.md with no split-out reference files, exceeding the 50-line simple-skill exception.

3 / 5

Total

16

/

20

Passed

Description

88%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 strong, specific description that clearly states capabilities and provides an explicit Use-when trigger clause. Its only gaps are a few missing natural synonyms/file extensions and minor overlap risk with closely related Three.js skills.

DimensionReasoningScore

Specificity

Lists multiple concrete capabilities ('keyframe animation, skeletal animation, morph targets, animation mixing'), giving comprehensive coverage of the Three.js animation domain rather than vague abstraction.

5 / 5

Completeness

Explicitly answers both 'what' (the four animation types) and 'when' via a concrete 'Use when...' clause with multiple trigger phrases.

5 / 5

Trigger Term Quality

Natural triggers like 'animating objects, playing GLTF animations, creating procedural motion, or blending animations' are present, but common synonyms and file extensions (e.g., 'character animation', .glb, .gltf) are missing.

4 / 5

Distinctiveness Conflict Risk

The Three.js-animation niche is clear, but generic triggers like 'animating objects' risk minor overlap with the sibling threejs-fundamentals skill (which covers the animation loop).

4 / 5

Total

18

/

20

Passed

Validation

87%

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

Validation — 14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

skill_md_line_count

SKILL.md is long (560 lines); consider splitting into references/ and linking

Warning

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

14

/

16

Passed

Repository
administrakt0r/AI-Agents-Safe-Coding-Skills
Reviewed

Table of Contents

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