xlsx-to-csv
Convert XLSX spreadsheets (single or multi-sheet) to CSV files you can read and grep. Use whenever you need to process an .xlsx report from Xero, Cryptio, bank exports, or any tool that delivers spreadsheet output.
Best use case
xlsx-to-csv is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Convert XLSX spreadsheets (single or multi-sheet) to CSV files you can read and grep. Use whenever you need to process an .xlsx report from Xero, Cryptio, bank exports, or any tool that delivers spreadsheet output.
Teams using xlsx-to-csv should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/xlsx-to-csv/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How xlsx-to-csv Compares
| Feature / Agent | xlsx-to-csv | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Convert XLSX spreadsheets (single or multi-sheet) to CSV files you can read and grep. Use whenever you need to process an .xlsx report from Xero, Cryptio, bank exports, or any tool that delivers spreadsheet output.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# XLSX to CSV ## When to use Any time you need to read or grep the contents of an `.xlsx` file in text form. The `Read` tool cannot render `.xlsx` directly; convert to CSV first. ## Single-sheet XLSX LibreOffice headless conversion works: ```bash libreoffice --headless --convert-to csv --outdir /path/to/outdir /path/to/input.xlsx ``` Output: `outdir/input.csv` (the active sheet only). ## Multi-sheet XLSX LibreOffice's `--convert-to csv` only emits the **active sheet**, so hidden sheets get dropped silently. For multi-sheet files use `xlsx2csv` via `uvx` (no permanent install needed): ```bash uvx --from xlsx2csv xlsx2csv -a /path/to/input.xlsx /path/to/outdir/ ``` Output: one CSV per sheet, named after the sheet (with spaces preserved). If you don't know whether a file is multi-sheet, default to `xlsx2csv` — it handles single-sheet files fine too. ## Files served with the wrong extension Some tools deliver XLSX content with a `.zip` extension (e.g. Cryptio's Trial Balance download). Inspect with `unzip -l file.zip` — if you see `xl/workbook.xml` or `[Content_Types].xml`, it's an XLSX. Rename to `.xlsx` and convert as normal. ## Pitfalls - LibreOffice silently emits the active sheet only — running it on a multi-sheet file looks successful but discards hidden sheets. Always check sheet count via `unzip -l file.xlsx | grep worksheets/sheet`. - `xlsx2csv` requires an output directory for `-a`; it will not write to stdout when emitting multiple sheets. - Empty rows in the source are emitted as commas-only lines; filter with `grep -v '^,*$'` if they're noisy.
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