Document XLSX Skill - Quick Reference

Boundary: when the official Anthropic xlsx skill is available, prefer it for plain create/edit, formula-first financial models, LibreOffice recalculation (recalc.py) and formula-error scans. Use this skill for its specialist lanes:

• native charts, pivots, data validation and conditional formatting
• Office Scripts, Microsoft Graph and xlwings automation
• very large (write_only/read_only) files
• untrusted-workbook audit and sanitising

Core Decision Rules