Content
56%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The body is well-structured with a clear workflow and largely executable code examples, plus a genuinely useful bundle of reference and asset files that are real and one level deep. Its main weaknesses are verbosity — it re-teaches d3 basics Claude already knows and inlines detail that duplicates the reference files — and snippets that are not fully self-contained.
Suggestions
Cut the inlined 'Scales reference' and 'Common visualisation patterns' sections down to a few lines per pattern and point to references/scale-reference.md and references/d3-patterns.md, which already contain that material.
Make snippet examples self-contained or explicitly label them as fragments that plug into the drawVisualization structure (e.g., note which variables like g and xScale come from step 3 of the core workflow).
Replace the 'Best practices → Performance optimisation' comment-only block with one concrete example (e.g., a canvas-rendering snippet for >1000 points), since comments alone are not executable guidance.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | At ~815 lines the body inlines several sections teaching d3 basics Claude already knows — a full 'Scales reference' covering scaleLinear/scaleBand/scaleOrdinal, basic pie/line patterns, and elementary .transition() usage — much of which also duplicates references/scale-reference.md and references/d3-patterns.md. This matches anchor 2 ('Noticeably verbose; several unnecessary explanations or padded sections'); it is not a 3 because the duplication is extensive rather than occasional. | 2 / 5 |
Actionability | Most guidance is concrete, executable code (complete drawBarChart, drawChordDiagram, drawHeatmap functions, drag handlers, responsive setups with cleanup), matching anchor 4 ('Mostly executable guidance... with minor gaps'). It is not a 5 because several snippets (line chart, pie chart, scatter, tooltip) reference undefined variables like g, circles, and xScale and are not copy-paste self-contained. | 4 / 5 |
Workflow Clarity | The core workflow is a clear numbered sequence (set up d3 → choose integration pattern → structure drawing function → responsive sizing), extended with an 'Adding interactivity' section and a 'Common issues and solutions' recovery section — anchor 4 ('Clear sequence with most checkpoints present'). It is non-destructive so heavy validation is not required, but it lacks the explicit validation checkpoints and feedback loops of anchor 5. | 4 / 5 |
Progressive Disclosure | The bundle structure is solid — all six referenced files (three references, three assets) exist, are one level deep with no nested references, and are described in a Resources section — but ~500 lines of pattern and scale detail are inlined in SKILL.md that belong in the already-existing reference files (d3-patterns.md, scale-reference.md). This matches anchor 3 ('Some structure... content that should be separate is inline'); it is not a 4 because the inlining is substantial rather than minor. | 3 / 5 |
Total | 13 / 20 Passed |