Content
77%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 an exceptionally actionable, well-sequenced validation playbook with concrete checks, pitfall definitions, and a complete output template — Claude knows exactly what to do after reading it. Its weaknesses are redundancy between the Workflow and Standards sections and a monolithic single-file layout where the checklists and pitfalls belong in separate reference files.
Suggestions
Move Common Pitfalls, Spot-Check Recipes, and Visualization Checks (~120 lines) into one-level-deep reference files (e.g. references/pitfalls.md, references/checks.md) and keep SKILL.md as a concise overview with well-signaled pointers, improving progressive disclosure and token cost per invocation.
De-duplicate the Workflow and Standards sections: fold the freshness/deduplication/join-coverage items from step 3 and the grain/denominator items from step 4 into their respective Standards checklists (or vice versa) rather than stating each check twice.
Trim hedged phrasing that adds tokens without adding guidance (e.g. 'when possible', 'when needed' repeated across steps) and collapse near-duplicate items like the edge-case bullets that appear in both step 5 and Reasonableness Checks.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense with genuinely non-obvious domain guidance (pitfall definitions like join explosion, survivorship bias, denominator shifting, plus a copy-paste output template), but the ~120-line Standards section substantially re-treads the Workflow: freshness/deduplication/join coverage appear in both step 3 and 'Data Quality Checks', and grain/denominators appear in both step 4 and 'Calculation Checks'. This matches the 'mostly efficient but could be tightened' anchor — not a 2, since there is no explanation of concepts Claude already knows and every list item carries real signal. | 3 / 5 |
Actionability | Guidance is highly concrete and executable: named checks ("Compare row counts and distinct primary entities before and after the join", "use COUNT(DISTINCT primary_id)"), specific spot-check recipes ("Reverse engineer a headline number from component metrics, such as users times per-user revenue"), and a complete copy-paste-ready output template with a three-level confidence rating scale. As an instruction-only skill, this fully covers the common cases; not a 4 because there are no material gaps in what a validator should do or produce. | 5 / 5 |
Workflow Clarity | The 8-step workflow is clearly sequenced from artifact inventory through methodology, data quality, calculations, reasonableness, visuals, conclusions, and a final confidence assessment, with validation woven into every step (recompute numbers, reconcile against trusted sources, boundary checks). Step 8 acts as an explicit checkpoint — separating blockers from caveats and requiring reproducible artifact paths — and the Standards checklists cover error handling. It matches the 5 anchor's clear sequence with explicit validation and checklists; the 4 anchor's 'minor validation gaps' does not fit. | 5 / 5 |
Progressive Disclosure | There is no bundle at all (no references/, scripts/, or assets/), and the entire skill is a single ~185-line inline document. Sections and headers are clear, which lifts it above the 2 anchor's unstructured inline bulk, but the Standards section (Common Pitfalls, Spot-Check Recipes, Visualization Checks — roughly two-thirds of the file) is exactly the reference material that belongs in one-level-deep files like PITFALLS.md or CHECKS.md, so it sits at the 'content that should be separate is inline' level rather than 4. | 3 / 5 |
Total | 16 / 20 Passed |