frontend-design
Defines a named visual aesthetic, selects typography pairings, builds CSS token systems, and adds entrance animations for high-design-quality pages. Use when the user asks to design a landing page, style a marketing site, create a distinctive UI theme, pick fonts, or add CSS animations — specifically when visual polish and brand identity matter rather than generic component scaffolding.
100
100%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is an excellent skill description that hits all the key criteria. It lists specific concrete capabilities, provides rich natural trigger terms, includes an explicit 'Use when...' clause with clear scenarios, and distinguishes itself from adjacent skills with the 'rather than generic component scaffolding' qualifier. The third-person voice is used correctly throughout.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'defines a named visual aesthetic', 'selects typography pairings', 'builds CSS token systems', and 'adds entrance animations'. These are clearly defined, actionable capabilities. | 3 / 3 |
Completeness | Clearly answers both 'what' (defines visual aesthetics, selects typography, builds CSS tokens, adds animations) and 'when' with an explicit 'Use when...' clause that includes multiple trigger scenarios and even a clarifying exclusion ('rather than generic component scaffolding'). | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: 'landing page', 'marketing site', 'UI theme', 'pick fonts', 'CSS animations', 'visual polish', 'brand identity'. These cover a good range of natural user language for this domain. | 3 / 3 |
Distinctiveness Conflict Risk | The description carves out a clear niche around high-design-quality visual styling, typography, and CSS tokens, and explicitly distinguishes itself from generic component scaffolding. This makes it unlikely to conflict with general UI component or layout skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-crafted skill that efficiently communicates a design workflow with concrete, executable examples and clear validation steps. It strikes an excellent balance between providing enough actionable guidance in the main file while deferring extended content to referenced files. The quality checklist with specific measurable criteria ensures consistent output quality.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is lean and efficient. It avoids explaining what CSS custom properties are or how animations work, trusting Claude's competence. Every section serves a clear purpose with no padding or unnecessary context. | 3 / 3 |
Actionability | The quick-start example is fully executable CSS with concrete token definitions, a real keyframe animation, and a proper reduced-motion media query. The quality checklist provides specific, measurable criteria (e.g., '≥4.5:1 contrast', '<500ms animations'). | 3 / 3 |
Workflow Clarity | The 5-step design workflow is clearly sequenced with explicit dependencies (step 3 uses tokens from step 2) and ends with a validation step that references the quality checklist. The checklist itself serves as a verification checkpoint before completion. | 3 / 3 |
Progressive Disclosure | The skill provides a concise overview with well-signaled one-level-deep references to COMPONENTS.md and REFERENCE.md for extended content. The main file stays focused on the workflow and quick-start while clearly directing to supplementary files for details. | 3 / 3 |
Total | 12 / 12 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 — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- monkilabs/opencastle
- Commit
f5c8508
- Reviewed
Table of Contents
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