xlsx Claude Code Skill
Claude Code SkillClaude CodeDocuments & Content CreationThe explanation below is AI-generated. Please verify it against the sources.
This skill lets Claude work with spreadsheet files—. xlsx, . xlsm, . xltx, . csv, and . tsv—whenever such a file is the main input or output of a task. It covers building a new workbook, editing an existing one, correcting formulas, applying formatting or charts, tidying up messy tabular data, and converting between tabular file formats. According to the SKILL. md instructions, it relies on openpyxl for formula and formatting work, pandas for bulk data transfer, markitdown for quick sheet previews, and a LibreOffice-based recalculation script to confirm formulas compute without errors. The document also lists detailed cautions about openpyxl's cached-value behavior, merged cells, macro preservation, formula compatibility with LibreOffice, and formatting conventions for financial models.
What you can do with xlsx
- Edit an existing spreadsheet while preserving its formulas and formatting conventions
- Detect and fix formula errors using a LibreOffice-based recalculation script
- Clean up and restructure messy tabular data into a properly formatted spreadsheet
- Convert between spreadsheet and tabular formats such as CSV and TSV
- Apply financial-model conventions for coloring, number formats, and layout structure
Sources
History of xlsx
- Claude Code Skill Updated skill content (SKILL.md) of xlsx
- Claude Code Skill Updated the official description of xlsx