CtrlK
BlogDocsLog inGet started
Tessl Logo

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

84

1.35x
Quality

71%

Does it follow best practices?

Impact

96%

1.35x

Average score across 5 eval scenarios

SecuritybySnyk

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/anthropic-frontend-design/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Discovery

92%

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 communicates both what the skill does and when to use it, with rich trigger terms covering many natural user phrasings. The description's main weakness is its broad scope which could overlap with other coding or framework-specific skills, though the emphasis on design quality and avoiding generic AI aesthetics provides a useful differentiator. The third-person voice is used correctly throughout.

DimensionReasoningScore

Specificity

Lists multiple specific concrete actions and outputs: 'web components, pages, artifacts, posters, applications' with further examples like 'websites, landing pages, dashboards, React components, HTML/CSS layouts'. Also specifies the quality dimension: 'production-grade', 'polished code and UI design', 'avoids generic AI aesthetics'.

3 / 3

Completeness

Clearly answers both 'what' (create distinctive, production-grade frontend interfaces with high design quality, generates creative polished code) and 'when' (explicit 'Use this skill when...' clause with specific trigger scenarios like building web components, pages, dashboards, styling/beautifying web UI).

3 / 3

Trigger Term Quality

Excellent coverage of natural terms users would say: 'web components', 'pages', 'landing pages', 'dashboards', 'React components', 'HTML/CSS layouts', 'styling', 'beautifying', 'web UI', 'posters', 'artifacts', 'websites', 'applications'. These are terms users naturally use when requesting frontend work.

3 / 3

Distinctiveness Conflict Risk

While it focuses on frontend/UI with a design quality emphasis, the scope is quite broad ('web components, pages, applications') which could overlap with general coding skills or specific framework skills. The 'high design quality' and 'avoids generic AI aesthetics' angle provides some distinction, but the breadth of covered items increases conflict risk.

2 / 3

Total

11

/

12

Passed

Implementation

50%

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

This skill provides a strong creative direction framework for frontend design with good specificity around what to avoid (generic AI aesthetics) and what to pursue (bold, intentional design choices). However, it lacks executable code examples which is a significant gap for a frontend skill, relies heavily on motivational language that doesn't add instructional value, and could benefit from a clearer implementation workflow with validation checkpoints.

Suggestions

Add at least one concrete HTML/CSS code example demonstrating the aesthetic principles (e.g., a hero section with distinctive typography, color variables, and animation) to make the skill truly actionable.

Remove motivational/inspirational language ('Don't hold back', 'Claude is capable of extraordinary creative work') - these waste tokens without adding instructional value.

Add implementation workflow steps with validation checkpoints, such as: verify responsive behavior, check color contrast for accessibility, test animations for performance.

Consider extracting the detailed aesthetics guidelines (typography choices, color strategies, animation patterns) into a separate reference file and keeping SKILL.md as a concise overview with links.

DimensionReasoningScore

Conciseness

The content includes some unnecessary motivational language ('Claude is capable of extraordinary creative work', 'Don't hold back') and repetitive emphasis on avoiding generic aesthetics. The design guidelines are mostly useful but could be tightened - several sentences restate the same 'be bold and distinctive' message.

2 / 3

Actionability

The skill provides concrete design direction (specific font advice, color strategy, animation approaches, layout techniques) and names specific tools (Motion library for React, CSS variables), but lacks any executable code examples. For a frontend skill, even one HTML/CSS snippet demonstrating the aesthetic principles would significantly improve actionability.

2 / 3

Workflow Clarity

There's a clear two-phase workflow (Design Thinking → Implementation) with the design phase having structured considerations (Purpose, Tone, Constraints, Differentiation). However, the implementation phase lacks any sequencing - it just lists qualities the output should have. No validation steps exist for checking accessibility, responsiveness, or visual quality.

2 / 3

Progressive Disclosure

The content is reasonably structured with clear sections (Design Thinking, Frontend Aesthetics Guidelines) but is somewhat monolithic. The aesthetics guidelines section is dense and could benefit from linking to separate reference files for typography choices, color palettes, or animation patterns rather than inlining everything.

2 / 3

Total

8

/

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.

Validation11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository
boisenoise/skills-collections
Reviewed

Table of Contents

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.