Content
85%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A well-structured, highly actionable Canvas2D design skill with clear progressive disclosure and a sequenced practice list; its main weakness is mild verbosity and overlap between the Overview and the Choose-When section.
Suggestions
Trim redundancy between the Overview paragraphs and the "Choose Canvas2D When" bullet list so the trigger rationale appears once.
Consider one minimal copy-paste Canvas resize-and-draw skeleton to anchor the high-DPI and transform guidance concretely.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is information-dense and does not explain basic concepts Claude already knows, but the Overview prose and the "Choose Canvas2D When" list partly restate the description's triggers and could be tightened for token efficiency. | 2 / 3 |
Actionability | It gives concrete, specific guidance throughout — exact APIs (ctx.setTransform(pixelRatio,0,0,pixelRatio,0,0), setPointerCapture(), getContext("2d",{willReadFrequently:true})) and a backing-store memory formula — and as an instruction/design skill the absence of full code blocks is not penalized per the scoring notes. | 3 / 3 |
Workflow Clarity | Core Practices 1–8 provide a sensibly ordered build-up (backing store → transforms → layers → hit testing → pointer → mobile) and the Output Expectations section acts as an explicit verification checklist; no destructive or batch operation is present that would require a validation cap. | 3 / 3 |
Progressive Disclosure | SKILL.md is an overview that points to four real one-level-deep ./references/*.md files (rendering-architecture, high-density-interaction, performance-playbook, sparklines-and-microcharts) plus clearly signaled shared foundations references, with easy navigation. | 3 / 3 |
Total | 11 / 12 Passed |