Content
88%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.
A dense, high-quality reference for xlsx work: almost entirely non-obvious gotchas and executable code with genuine validation loops. The only soft spots are the prose-only soffice recalc recipe and the fully-inline single-file layout.
Suggestions
Add a concrete code snippet for the LibreOffice recalc flow (the exact soffice --convert-to invocation plus the _recalc/ directory handling), since it is the most fragile step and currently prose-only.
Consider moving the raw OOXML section and/or the chart section into a references/ file and linking them from SKILL.md, keeping the main file focused on the core read/create/edit loop.
The chart section's one-liner 'LineChart / PieChart / ScatterChart follow the same shape' could name their import paths (from openpyxl.chart import LineChart, ...) so the snippet is directly reusable for those types.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Lean throughout — no explanation of what Excel or openpyxl is; every sentence carries non-obvious operational knowledge (the formula-cache gotcha, the data_only=True save-destroys-formulas warning, insert_rows not rewriting formulas). Matches the 'every token earns its place' anchor. | 5 / 5 |
Actionability | Copy-paste-ready executable code for reading, creating, editing, charts, CSV, and verification. However, the LibreOffice recalc flow — the most fragile operation — is prose-only ("recalculate through `exec` using `subprocess.run` and a relative `_recalc/` directory") without a concrete command, so it falls just short of the fully-executable anchor. | 4 / 5 |
Workflow Clarity | Clear decision framework (static numbers vs. live model), explicit validation checkpoints (post-save reopen, zipfile.testzip, error-string scan) with an honest caveat about when that check is meaningful, and a caution about structural shifts — matches the explicit-validation-with-feedback anchor. | 5 / 5 |
Progressive Disclosure | Well-organized sections with clear headers and no dangling references (the skill is a single self-contained file, which is appropriate). But at ~210 lines everything is inline with no bundle structure, fitting 'good structure, minor organization gaps' rather than the reference-structured top anchor. | 4 / 5 |
Total | 18 / 20 Passed |