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antigravity-design-expert

Core UI/UX engineering skill for building highly interactive, spatial, weightless, and glassmorphism-based web interfaces using GSAP and 3D CSS.

51

1.50x
Quality

27%

Does it follow best practices?

Impact

92%

1.50x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./plugins/antigravity-awesome-skills-claude/skills/antigravity-design-expert/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

22%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This skill reads more like a persona prompt or design brief than an actionable skill file. It spends significant tokens describing concepts Claude already understands (glassmorphism, parallax, CSS transforms) while failing to provide executable code examples, component templates, or clear workflows. The content would benefit greatly from concrete React/GSAP code snippets and a structured build process.

Suggestions

Replace the descriptive design principles with executable React component examples demonstrating the 'antigravity' patterns (e.g., a complete floating card component with GSAP animation).

Add a step-by-step workflow for building an antigravity UI: e.g., 1) Set up perspective container, 2) Build base component, 3) Add GSAP animations, 4) Verify reduced-motion support, 5) Performance audit with DevTools.

Remove the 'Role Overview' section entirely and trim explanations of well-known CSS concepts (glassmorphism, parallax) to just the specific values/patterns unique to this design system.

Extract detailed animation patterns and component templates into separate referenced files (e.g., ANIMATIONS.md, COMPONENTS.md) to keep the main skill lean.

DimensionReasoningScore

Conciseness

The content is verbose and explains many concepts Claude already knows well (what glassmorphism is, what parallax means, how CSS perspective works, what GSAP is). The 'Role Overview' section is pure fluff that adds no actionable value. Many design principles are described rather than demonstrated, wasting tokens on explanations of familiar CSS properties.

1 / 3

Actionability

There are some concrete CSS values (specific box-shadow, backdrop-filter, transform values) and specific timing recommendations (0.3s ease-out, 0.1s stagger), but no executable code examples or copy-paste ready components. The guidance stays at the level of CSS property suggestions rather than providing actual React/GSAP component implementations.

2 / 3

Workflow Clarity

There is no workflow or sequencing for building these interfaces. The content is organized as a list of principles and rules but provides no step-by-step process for constructing a component, no validation checkpoints, and no guidance on how to iterate or verify the output meets the 'antigravity' aesthetic.

1 / 3

Progressive Disclosure

The content is organized into clear sections with emoji headers, which provides some structure. However, it's a monolithic file with no references to supporting files for detailed examples, component templates, or advanced patterns. For a skill of this complexity, separate files for example components or animation patterns would be appropriate.

2 / 3

Total

6

/

12

Passed

Description

32%

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 identifies a specific visual style niche (glassmorphism, 3D CSS, GSAP) but fails to list concrete actions the skill performs and entirely lacks a 'Use when...' clause. The language leans toward design jargon rather than natural user trigger terms, and the broad 'Core UI/UX engineering skill' framing weakens distinctiveness.

Suggestions

Add an explicit 'Use when...' clause, e.g., 'Use when the user asks for glassmorphism effects, GSAP animations, 3D transforms, frosted glass UI, or spatial/parallax web interfaces.'

List specific concrete actions such as 'Creates glass-effect cards, builds GSAP scroll-triggered animations, implements 3D perspective transforms, designs floating/weightless UI layouts.'

Include natural user trigger terms like 'animation', 'glass effect', 'frosted glass', 'blur background', 'hover animation', 'parallax', and 'motion design' to improve discoverability.

DimensionReasoningScore

Specificity

Names the domain (UI/UX engineering) and some characteristics (interactive, spatial, weightless, glassmorphism-based interfaces) plus technologies (GSAP, 3D CSS), but doesn't list concrete actions like 'create animations', 'build glass-effect cards', or 'implement parallax scrolling'.

2 / 3

Completeness

Describes what the skill is about at a high level but completely lacks any 'Use when...' clause or explicit trigger guidance, which per the rubric should cap completeness at 2 — and since the 'what' is also vague (no concrete actions), this falls to 1.

1 / 3

Trigger Term Quality

Includes some relevant keywords like 'glassmorphism', 'GSAP', '3D CSS', and 'web interfaces', but misses common user terms like 'animation', 'glass effect', 'blur', 'frosted glass', 'parallax', 'hover effects', or 'motion design'. Terms like 'spatial' and 'weightless' are more design-jargon than natural user language.

2 / 3

Distinctiveness Conflict Risk

The combination of glassmorphism + GSAP + 3D CSS creates a somewhat distinctive niche, but the broad framing as 'Core UI/UX engineering skill' could overlap with general frontend or CSS skills. Without explicit trigger boundaries, conflict risk remains moderate.

2 / 3

Total

7

/

12

Passed

Validation

90%

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

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

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

Warning

Total

10

/

11

Passed

Repository
sickn33/antigravity-awesome-skills
Reviewed

Table of Contents

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