frontend-design

Defines named visual aesthetic, selects typography pairings, builds CSS token systems, adds entrance animations for high-design-quality pages. Use when user asks to design landing page, style marketing site, create distinctive UI theme, pick fonts, or add CSS animations — specifically when visual polish, brand identity matter rather than generic component scaffolding.

Quality

96%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Advisory

Suggest reviewing before use

Quality

Content

92%

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 with a clear workflow, executable CSS examples, and efficient use of tokens. The design workflow is properly sequenced with validation, and the quality checklist provides concrete acceptance criteria. The main weakness is that referenced files (COMPONENTS.md, REFERENCE.md) don't exist in the bundle, and the reference to a 'project-consistency' skill is unclear.

Suggestions

Provide the referenced COMPONENTS.md and REFERENCE.md bundle files, or remove references to them if the content is self-contained enough without them.

Clarify the 'project-consistency' skill reference—either link to it properly or remove the blockquote if it's not a reliable dependency.

Dimension	Reasoning	Score
Conciseness	The content is lean and efficient. It avoids explaining what CSS custom properties are or how animations work—it assumes Claude's competence. Every section earns its place with actionable guidance rather than tutorial-style explanation.	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 body contrast'). Copy-paste ready.	3 / 3
Workflow Clarity	The 5-step design workflow is clearly sequenced with explicit dependencies (step 3 uses only tokens from step 2). Step 5 is an explicit validation checkpoint referencing the Quality Checklist, with a 'fix any failing item before marking done' feedback loop.	3 / 3
Progressive Disclosure	References to COMPONENTS.md and REFERENCE.md are well-signaled and one level deep, which is good. However, no bundle files were provided, meaning these references point to non-existent files. The mention of a 'project-consistency' skill as a blockquote dependency is vague and not clearly navigable.	2 / 3
	Total	11 / 12 Passed

Description

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 a strong skill description that clearly articulates specific capabilities (visual aesthetics, typography, CSS tokens, animations), provides rich natural trigger terms users would actually say, and explicitly defines both when to use it and when not to use it. The negative boundary distinguishing it from generic component scaffolding is particularly effective for reducing conflict risk.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions: 'Defines named visual aesthetic', 'selects typography pairings', 'builds CSS token systems', 'adds entrance animations'. These are distinct, actionable capabilities.	3 / 3
Completeness	Clearly answers both what (defines visual aesthetics, selects typography, builds CSS tokens, adds animations) and when ('Use when user asks to design landing page, style marketing site, create distinctive UI theme, pick fonts, or add CSS animations'). Also includes a helpful negative boundary ('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'. Good coverage of terms across design-related requests.	3 / 3
Distinctiveness Conflict Risk	Carves out a clear niche around high-design-quality visual styling and brand identity, and explicitly distinguishes itself from generic component scaffolding. The combination of typography, CSS tokens, and entrance animations creates a distinct trigger profile.	3 / 3
	Total	12 / 12 Passed

Validation

100%

Warnings & errors only

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: 7a69a05

Reviewed: about 1 month ago

Table of Contents

Discovery Implementation Validation

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.