Conciseness

The body is a dense, mostly lean reference: terse bullet lists, a transform-alias table, and short executable snippets with no padded prose. It falls short of anchor 5 because a few items restate what Claude already knows (e.g. 'Animating x, y, scale, rotation, opacity stays on the compositor. Avoid width, height, top, left'), but it is well above anchor 3 since there is no genuinely unnecessary explanation.

Actionability

Every section provides copy-paste-ready, complete code — tween control methods, gsap.matchMedia(), timeline construction, position parameters ('<', '<0.2', 'intro+=0.3'), labels, nesting, and gsap.quickTo() — plus exact syntax values for eases, stagger objects, directional rotation, and relative values. This matches the fully-executable anchor covering common cases; anchor 4's 'minor gaps' are absent.

Workflow Clarity

As a single-purpose reference skill there is no multi-step process to sequence, and sections are unambiguous with 'Best Practices' and 'Do Not' lists guiding choices; no destructive or batch operations require validation. It does not reach 5 because the body omits HyperFrames-specific integration guidance (e.g. the window.__timelines registration that references/effects.md depends on), leaving a small gap between the main reference and the bundle.

Progressive Disclosure

Structure is good: a 'References (loaded on demand)' section clearly signals references/effects.md with when-to-read guidance, one level deep, and the main body stays a reasonable overview. It falls short of anchor 5 because scripts/extract-audio-data.py exists in the bundle yet is never mentioned or navigated to from SKILL.md.

Specificity

The description lists many concrete capabilities — 'gsap.to(), from(), fromTo()', 'position parameter, labels, nesting, playback', 'transforms, will-change, quickTo' — covering methods, timelines, and performance comprehensively in third person ('Covers'). It matches the anchor for multiple specific concrete actions with comprehensive coverage; anchor 4 would require minor gaps in coverage, which are not present.

Completeness

Both 'what' (a GSAP animation reference covering named APIs) and 'when' ('Use when writing GSAP animations in HyperFrames compositions') are explicitly present. It does not reach anchor 5 because the 'when' clause offers only a single narrow trigger phrase, whereas the top anchor expects concrete trigger phrases covering multiple natural invocation scenarios.

Trigger Term Quality

Terms like 'GSAP', 'animation', 'timelines', 'easing', and 'stagger' are natural phrases a user would say, giving good keyword coverage. It falls short of anchor 5 because common synonyms and variations such as 'tween', 'animate', or 'motion' are missing, but it clearly exceeds anchor 3 since the core terms users actually use are present.

Distinctiveness Conflict Risk

'GSAP animation reference for HyperFrames' carves out a clear niche with distinct, specific triggers (GSAP, HyperFrames, timeline syntax). It is unlikely to fire for unrelated skills and matches the minimal-conflict-risk anchor; anchor 4's 'minor overlap risk' does not apply given the unique library-and-framework pairing.