Conciseness

The body is largely lean — a routing table, terse decision rules, and one script block — and the constraint section is genuinely non-obvious domain contract rather than concepts Claude already knows. Minor trimmable padding exists: the opening paragraph restates the frontmatter description verbatim in structure, and 'Picking a runtime' overlaps the adapter rows of the routing table. Fits 'efficient; minor instances of over-explanation' rather than the every-token-earns-its-place anchor.

Actionability

The script section gives a copy-paste-ready bash command with flags and output path, the routing table gives exact file targets for each need, and the blueprint section states concrete load conditions. The primary compose path ('glue them together with a single paused GSAP timeline') never shows an inline minimal example — it delegates to rules/<name>.md — which is the 'minor gap' separating it from fully copy-paste-ready coverage of the common case.

Workflow Clarity

A clear default-first sequence is present: compose from 2-4 atomic rules, escalate to a blueprint only under two explicit conditions, then audit the result — 'Use it to audit choreography (dead zones, stagger consistency, lifecycle warnings) after authoring' is an explicit post-authoring validation checkpoint. Not anchor 5 because the audit-to-fix feedback loop is only implied and lint/check validation lives in a sibling skill ('hyperframes-cli') rather than being sequenced here.

Progressive Disclosure

The SKILL.md is structured exactly as an index should be (overview, routing table, one-level-deep references), and references/motion-blur.md and scripts/animation-map.mjs are real, substantial files. However, scored against the actual bundle structure, the majority of referenced paths — rules-index.md, rules/<name>.md, blueprints-index.md, blueprints/<id>.md, transitions/overview.md, transitions/catalog.md, techniques.md, and all 13 adapters/*.md — have no corresponding files in the provided bundle, making most navigation targets unverifiable/dangling. That is more than the 'minor organization gaps' of anchor 4, while the signaling itself is far better than anchor 3's buried references; the missing files are the deciding factor.

Specificity

Concrete actions are enumerated: 'pick 2-4 rules and compose, or load a blueprint, or look up runtime-specific API (e.g. GSAP eases / Lottie player / Three.js mixer)' plus 'auditing an existing composition's choreography (animation map)' and '24 named text-animation effects'. Coverage spans every capability the skill claims (rules, blueprints, transitions, techniques, adapters), matching the comprehensive multiple-concrete-actions anchor rather than the 'minor gaps' anchor below.

Completeness

Both what and when are explicit: what — 'atomic motion rules, multi-phase scene blueprints, scene transitions, broader motion-design techniques, AND the seven runtime adapters'; when — 'Use for any motion or animation task: pick 2-4 rules and compose, or load a blueprint, or look up runtime-specific API'. This mirrors the anchor-5 example structure of concrete what + explicit trigger phrases for when.

Trigger Term Quality

Natural terms a user would say are well covered: 'animation', 'motion', 'motion-design', 'scene transitions', 'text-animation effects', plus all seven runtime names (GSAP, Lottie, Three.js, Anime.js, CSS keyframes, Web Animations API, TypeGPU). A few natural synonyms like 'tween', 'easing' (only 'GSAP eases' appears), or 'micro-interaction' are missing, fitting the good-coverage/few-missing anchor rather than the fully comprehensive one.

Distinctiveness Conflict Risk

'HyperFrames-native' plus the specific runtime adapters carve out a clear niche with minimal conflict risk, but 'Use for any motion or animation task' is broad enough to overlap with sibling skills (hyperframes-creative's beat/motion planning, or generic web-animation requests outside HyperFrames), matching the 'mostly distinct; minor overlap risk with closely related skills' anchor.