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lottie-bodymovin

Use when implementing Disney's 12 animation principles with Lottie animations exported from After Effects

57

Quality

65%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./.agents/skills/lottie-bodymovin/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%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.

The content is efficient and highly actionable, packed with concrete code for each principle, but it functions as a catalog rather than a sequenced workflow and keeps everything inline with no progressive disclosure. Adding an end-to-end workflow and splitting out a reference file would lift the weaker dimensions.

Suggestions

Add a short sequenced workflow at the top (export from AE → load in lottie-react → apply principle techniques → verify playback) so the catalog has an explicit pipeline with a verification step.

Split the 'Key Lottie Features' API listing into a references/ file (e.g. LOTTIE_API.md) and link to it one level deep, keeping only the essential calls inline.

Consolidate the repeated setSpeed examples into one timing section to remove redundancy across sections 1, 6, and 9.

DimensionReasoningScore

Conciseness

The body is mostly lean code and brief bullets and assumes Claude knows the principles, but setSpeed recurs in sections 1, 6, and 9 and is recapped in 'Key Lottie Features', so a few tokens could be trimmed.

4 / 5

Actionability

Concrete, mostly copy-paste-ready code is provided throughout (playSegments, setSpeed, goToAndStop, addEventListener, React <Lottie>), but anim/animationData/background/hero are referenced before being wired, leaving minor gaps.

4 / 5

Workflow Clarity

This is a per-principle technique catalog rather than a sequenced pipeline; there is no end-to-end 'export → implement → verify' flow with validation checkpoints tying the sections together.

3 / 5

Progressive Disclosure

The ~140-line file is well-sectioned but entirely monolithic with no bundle files and no references; content such as the Lottie API feature list could be split into a one-level-deep reference.

3 / 5

Total

14

/

20

Passed

Description

66%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.

The description is highly distinctive and includes an explicit 'Use when' clause with a concrete trigger, but its action verb is generic and it omits natural synonyms like 'Bodymovin'. Splitting the what and when and adding synonym triggers would raise it.

Suggestions

Separate the 'what' and 'when': lead with the concrete capability, then 'Use when the user asks to apply Disney's 12 animation principles, or works with Lottie/Bodymovin animations exported from After Effects.'

Add missing natural trigger terms and synonyms — 'Bodymovin', '.json animation files', 'motion graphics', 'vector animation' — so users who phrase the need differently still activate the skill.

Replace the generic 'implementing' with specific actions, e.g. 'Implement, tune, and sequence Lottie animations that embody the 12 Disney principles.'

DimensionReasoningScore

Specificity

Names the domain concretely ('Disney's 12 animation principles', 'Lottie', 'After Effects') but the only action verb is the generic 'implementing', so it lists one action rather than several.

3 / 5

Completeness

An explicit 'Use when…' clause is present and the what is stated, but they are merged into a single clause rather than separate comprehensive trigger phrasing, so it falls short of the multi-trigger 5 anchor.

4 / 5

Trigger Term Quality

Natural terms a user would say are present ('Lottie animations', 'After Effects', 'Disney's 12 animation principles'), but common synonyms are missing — notably 'Bodymovin' (the plugin in the skill name), 'motion graphics', 'vector animation', and '.json'.

3 / 5

Distinctiveness Conflict Risk

The combination of '12 animation principles' + 'Lottie' + 'After Effects export' is a narrow, distinct niche with a trigger unlikely to fire for unrelated or more general animation skills.

5 / 5

Total

15

/

20

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 — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
calesthio/OpenMontage
Reviewed

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