Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.
93
39%
Does it follow best practices?
Impact
98%
1.75xAverage score across 10 eval scenarios
Failed to scan
The risk profile of this skill
Optimize this skill with Tessl
npx tessl skill review --optimize ./examples/canvas-design/SKILL.mdQuality
Discovery
67%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 adequately communicates both what the skill does and when to use it, which is its strongest aspect. However, it suffers from somewhat vague language ('design philosophy', 'beautiful visual art') and could benefit from more specific capability listing and broader trigger term coverage. The copyright disclaimer, while responsible, doesn't aid in skill selection.
Suggestions
Expand trigger terms to include common variations like 'illustration', 'graphic', 'infographic', 'flyer', 'banner', 'wallpaper', or 'artwork' to improve matching.
Replace vague phrases like 'using design philosophy' and 'beautiful visual art' with specific capabilities such as 'compose layouts with typography, shapes, color palettes, and imagery'.
Use third person voice consistently — change 'You should use this skill when' to a 'Use when...' clause to align with best practices.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (visual art/design) and some actions (create posters, art, designs), but 'using design philosophy' is vague and the specific capabilities like file format handling are not well elaborated beyond mentioning .png and .pdf. | 2 / 3 |
Completeness | Clearly answers both 'what' (create visual art in .png and .pdf documents) and 'when' ('when the user asks to create a poster, piece of art, design, or other static piece'), with explicit trigger guidance. | 3 / 3 |
Trigger Term Quality | Includes some natural trigger terms like 'poster', 'piece of art', 'design', and file formats '.png' and '.pdf', but misses common variations users might say such as 'illustration', 'graphic', 'infographic', 'flyer', 'banner', 'visual', or 'artwork'. | 2 / 3 |
Distinctiveness Conflict Risk | The mention of 'static piece' and visual art helps distinguish it from general document creation, but 'design' is broad and could overlap with UI design, web design, or presentation skills. The .pdf output could also conflict with PDF-focused skills. | 2 / 3 |
Total | 9 / 12 Passed |
Implementation
12%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 creative manifesto than actionable technical instructions for Claude. It is extremely verbose and repetitive, particularly around the theme of 'expert craftsmanship,' while providing virtually no concrete code, commands, or technical implementation details for actually generating PDF/PNG files. The workflow structure exists at a high level but lacks the specificity and validation steps needed for reliable execution.
Suggestions
Add concrete, executable code examples showing how to generate PDF and PNG files (e.g., using reportlab, Pillow, or cairo), including font loading from `./canvas-fonts`.
Eliminate redundant repetitions of 'expert craftsmanship' and 'minimal text' messaging—state each principle once clearly instead of 5-6 times.
Split the philosophy examples and canvas creation technical details into separate referenced files (e.g., EXAMPLES.md, CANVAS_GUIDE.md) to improve progressive disclosure.
Add concrete validation checkpoints (e.g., verify PDF renders correctly, check text doesn't overflow boundaries, validate font files exist) rather than abstract quality aspirations.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely verbose and repetitive. The instruction to emphasize 'expert craftsmanship' is itself repeated at least 5-6 times across the document. Concepts like 'minimal text' and 'visual expression' are restated in nearly every section. The document is ~200+ lines when the core actionable content could be conveyed in ~50. It also explains abstract creative concepts at length rather than providing concrete technical instructions. | 1 / 3 |
Actionability | Despite its length, the skill provides almost no concrete, executable guidance. There are no code examples for generating PDFs or PNGs, no specific library usage, no commands, no file format specifications. Instructions like 'create museum quality work' and 'push aesthetics to the frontier' are aspirational rather than actionable. The reference to `./canvas-fonts` directory is the only concrete path mentioned, but no code shows how to use it. | 1 / 3 |
Workflow Clarity | There is a discernible multi-step workflow (1. Create philosophy as .md, 2. Deduce reference, 3. Create canvas as .pdf/.png, 4. Refine). The sequence is present and the steps are labeled. However, there are no validation checkpoints, no error recovery steps, and the 'final step' refinement pass lacks concrete criteria for what 'pristine' means or how to verify quality programmatically. | 2 / 3 |
Progressive Disclosure | The entire skill is a monolithic wall of text with no references to external files for detailed guidance. All content—philosophy examples, canvas creation instructions, multi-page options—is inlined. There's no separation of concerns, no referenced supporting documents, and the content would benefit enormously from splitting examples, font guidance, and technical implementation into separate files. | 1 / 3 |
Total | 5 / 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.
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Table of Contents
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