#140 by installsWriting & documents
xlsx
Create, edit, and analyze Excel and CSV files with formulas, formatting, and data cleaning
178K
3.8K
179.6K
Jan 19, 2026
Install
npx skills add https://github.com/anthropics/skills --skill xlsxWhat it does
This skill handles all spreadsheet file operations: opening existing .xlsx/.csv files to read or modify them, creating new spreadsheets from scratch or raw data, and cleaning messy tabular data into proper formats. Reach for it whenever a spreadsheet file is the primary input or output of your task. It combines openpyxl for formula and formatting control with pandas for bulk data operations.
- Open, edit, and save spreadsheets with formulas, cell formatting, and charts using openpyxl
- Bulk read/write tabular data and convert between .xlsx, .xlsm, .csv, and .tsv formats
- Clean malformed rows, fix headers, and restructure messy data into proper spreadsheet format
- Inspect sheet structure and cell values without editing using markitdown preview
