Content
65%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A code-heavy, highly actionable skill with a clear scale-based strategy table and complete worked examples, but it is monolithic with no external references and duplicates mandatory rules in a Best Practices section. Batch/write workflows lack explicit validation feedback loops.
Suggestions
Add explicit validation checkpoints and error-recovery feedback loops for batch and write operations — e.g. verify streamed Parquet row count against the inspected total and retry on schema mismatch/OOM — to lift workflow_clarity above 2.
Remove the 'Best Practices' section that restates the 'Mandatory Rules' table and 'Prohibited' list, keeping a single source of truth, to tighten token usage and improve conciseness.
Split the reusable function library (inspect_excel, stream_excel_to_parquet, convert_excel_to_parquet, optimize_dtypes, write_large_excel) into a scripts/ file referenced from SKILL.md so the main file stays an overview, improving progressive_disclosure.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is mostly executable code and load-bearing tables, but the 'Best Practices' section restates the 'Mandatory Rules' decision table and the 'Prohibited' list, and the CJK font block plus some prose could be tightened. Not level 3 because of this duplication and padding; not level 1 because most tokens are concrete, useful guidance rather than concept explanation. | 2 / 3 |
Actionability | Provides fully executable, copy-paste-ready functions (inspect_excel, stream_excel_to_parquet, convert_excel_to_parquet, optimize_dtypes, write_large_excel) plus two complete end-to-end worked examples. Not level 2 because the code is complete and runnable, not pseudocode or missing key details. | 3 / 3 |
Workflow Clarity | A clear scale→strategy decision table and sequenced Examples 1 and 2 (Steps 1–6) give a recognizable sequence, and memory estimation acts as a pre-check. It is not level 3 because there are no explicit validation/feedback loops (validate output, retry on schema mismatch or OOM) for these batch and write operations, which the rubric caps at 2. | 2 / 3 |
Progressive Disclosure | The skill is a ~365-line monolithic SKILL.md with no bundle files (references/, scripts/, assets/ absent); sections are well-organized but all reusable code and advanced detail are inline. Not level 3 because there are no one-level-deep references for a skill this large; not level 1 because organization is clear, not a disorganized wall of text. | 2 / 3 |
Total | 9 / 12 Passed |