gsap-timeline

Official GSAP skill for timelines — gsap.timeline(), position parameter, nesting, playback. Use when sequencing animations, choreographing keyframes, or when the user asks about animation sequencing, timelines, or animation order (in GSAP or when recommending a library that supports timelines).

Quality

88%

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Securityby

Passed

No findings from the security scan

Quality

Content

90%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 tight, highly actionable reference that respects the context budget and provides copy-paste code across all major timeline concepts. It is well-structured for a single-file skill, though the inlined reference could be split into a separate API file to reach top-tier progressive disclosure.

Dimension	Reasoning	Score
Conciseness	Lean and efficient — it assumes Claude knows what GSAP and tweens are, jumps straight into executable code with only the briefest framing, and every section earns its tokens with no padding about basic concepts.	5 / 5
Actionability	Fully executable, copy-paste-ready code appears in every section (timeline creation, position parameter, defaults, labels, nesting, playback) and concrete examples cover the common cases, matching the top anchor.	5 / 5
Workflow Clarity	As a focused reference skill rather than a multi-step process, it is clearly organized by topic with explicit "Best practices" and "Do Not" guardrails; it stops short of 5 because there is no explicit sequenced workflow or validation checkpoint, and the destructive/batch cap does not apply since timeline animation is neither.	4 / 5
Progressive Disclosure	Well-organized single-file overview with clear section headers and a "Related skills" cross-reference for navigation; with no bundle files present and a fairly complete inlined reference rather than a thin overview pointing to separate files, it sits at the good-structure anchor rather than the split-content anchor 5.	4 / 5
	Total	18 / 20 Passed

Description

87%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, well-scoped description that states concrete capabilities and provides explicit "Use when" trigger guidance with natural phrasing and synonyms. Third-person voice is maintained throughout, satisfying the rubric's voice requirement.

Dimension	Reasoning	Score
Specificity	Names the domain (GSAP timelines) plus several concrete capabilities — "gsap.timeline(), position parameter, nesting, playback" — matching the anchor that lists several specific actions with minor gaps; not a 5 because it omits items like labels, defaults, and callbacks that the body actually covers.	4 / 5
Completeness	Explicitly answers both what ("Official GSAP skill for timelines — gsap.timeline(), position parameter, nesting, playback") and when ("Use when sequencing animations, choreographing keyframes, or when the user asks about animation sequencing, timelines, or animation order...") with concrete trigger phrases, matching the top anchor.	5 / 5
Trigger Term Quality	Includes natural user phrases such as "sequencing animations", "choreographing keyframes", "animation sequencing", "timelines", and "animation order", giving good keyword coverage with synonyms; a few natural terms are missing, so it sits just below the comprehensive anchor 5.	4 / 5
Distinctiveness Conflict Risk	It carves a clear niche — GSAP timelines — and its triggers are timeline-specific (sequencing, choreographing, animation order), minimizing overlap with sibling skills like gsap-core, gsap-scrolltrigger, and gsap-react.	5 / 5
	Total	18 / 20 Passed

Validation

93%

Warnings & errors only

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

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: nexu-io/open-design
Path: skills/gsap-timeline/SKILL.md
Commit: 0918d79

Reviewed: 2 days ago

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