Agent Skill
XLSX Creation and Analysis
Create, inspect, edit, recalculate, and verify Excel workbooks while preserving formulas and established spreadsheet conventions.
What is XLSX Creation and Analysis?
Anthropic's XLSX skill is a production workflow for spreadsheet work where the workbook itself is the deliverable. It selects between openpyxl, pandas, and lightweight inspection tools, documents assumptions, preserves templates, recalculates formulas, and requires a clean verification pass before the file is returned.
Key capabilities
Formula-safe editing
Uses spreadsheet formulas rather than hardcoded calculated values and preserves existing workbook conventions.
Output verification
Recalculates workbooks and checks for REF, DIV/0, VALUE, NAME, and related formula failures.
Use cases
Build financial and operational workbooks
Create formatted, formula-driven spreadsheets that remain editable and recalculate correctly.
Repair existing spreadsheets
Update tables, formulas, charts, and formatting without replacing a workbook's established structure.
Compatibility
- Python spreadsheet tooling
- LibreOffice for formula recalculation