xlsx

version: 4.1.0-fractal name: xlsx description: "Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas" license: Proprietary. LICENSE.txt has complete terms

Requirements for Outputs

All Excel files

🧠 Knowledge Modules (Fractal Skills)

1. Zero Formula Errors

2. Preserve Existing Templates (when updating templates)

3. Color Coding Standards

4. Number Formatting Standards

5. Formula Construction Rules

6. Data analysis with pandas

7. ❌ WRONG - Hardcoding Calculated Values

8. ✅ CORRECT - Using Excel Formulas

9. Creating new Excel files

10. Editing existing Excel files

11. Essential Verification

12. Common Pitfalls

13. Formula Testing Strategy

14. Interpreting recalc.py Output

15. Library Selection

16. Working with openpyxl

17. Working with pandas