Content
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is an exceptionally well-crafted skill file that covers a broad domain (SQL BI & Reporting) with remarkable density and clarity. Every section delivers executable code, concrete patterns, and explicit anti-patterns without wasting tokens on concepts Claude already knows. The progressive disclosure structure — concise overview with working examples in the main file, detailed references linked one level deep — is textbook quality, and the validation checklist plus common mistakes table provide strong guardrails.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Every section is dense with actionable information. No unnecessary explanations of what SQL is or how databases work. Tables are used effectively to compress information. The 'Common Mistakes' table is particularly efficient — each row delivers a concrete anti-pattern and fix without padding. | 3 / 3 |
Actionability | Nearly every pattern includes executable T-SQL code — running totals, moving averages, tally tables, gap filling, pivot/unpivot, JSON export all have copy-paste ready examples. The comparison tables (e.g., 2022+ vs pre-2022 date bucketing) give concrete alternatives. SARGable vs non-SARGable examples show both good and bad patterns with clear labels. | 3 / 3 |
Workflow Clarity | The validation checklist provides explicit verification steps for each major pattern area (subtotal rows, window frames, date filters, gap fills, dynamic pivot, export shape). The tally table section includes a bolded safety constraint ('Every tally CTE must include WHERE N <= <limit>'). The 'Common Mistakes' table serves as an additional error-recovery reference. For a reference/pattern skill rather than a sequential process skill, this is well-structured. | 3 / 3 |
Progressive Disclosure | The SKILL.md provides a comprehensive but concise overview of each pattern with working examples, then clearly signals deeper references via 'Full reference:' links at the end of each section. The reference files table at the bottom provides a complete navigation index. References are one level deep and clearly signaled. Note: bundle files were not provided to verify the referenced paths exist, but the structure itself is exemplary. | 3 / 3 |
Total | 12 / 12 Passed |