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packages/marketplace/skills/xlsx-generator.md

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+---
+name: xlsx-generator
+description: Generate Excel spreadsheets using openpyxl
+category: documents
+builtIn: true
+---
+
+# XLSX Generator
+
+Generate Excel spreadsheets. Use the bash tool to run a Python script with openpyxl.
+
+## Workflow
+
+1. Create a Python script that uses openpyxl to build the spreadsheet
+2. Run it with the bash tool
+3. Return the file path to the user
+
+## Requirements
+
+- python3 with openpyxl installed (`pip install openpyxl`)
+
+## Example Script
+
+```python
+from openpyxl import Workbook
+from openpyxl.styles import Font, Alignment, PatternFill
+from openpyxl.chart import BarChart, Reference
+
+wb = Workbook()
+ws = wb.active
+ws.title = "Sales Data"
+
+# Headers
+headers = ["Month", "Revenue", "Expenses", "Profit"]
+for col, header in enumerate(headers, 1):
+    cell = ws.cell(row=1, column=col, value=header)
+    cell.font = Font(bold=True, size=12)
+    cell.fill = PatternFill(start_color="4472C4", fill_type="solid")
+    cell.font = Font(bold=True, color="FFFFFF")
+
+# Data
+data = [
+    ["Jan", 45000, 32000, 13000],
+    ["Feb", 52000, 35000, 17000],
+    ["Mar", 48000, 33000, 15000],
+]
+for row_idx, row_data in enumerate(data, 2):
+    for col_idx, value in enumerate(row_data, 1):
+        ws.cell(row=row_idx, column=col_idx, value=value)
+
+# Auto-width columns
+for col in ws.columns:
+    ws.column_dimensions[col[0].column_letter].width = 15
+
+wb.save("sales-report.xlsx")
+print("Created sales-report.xlsx")
+```
+
+## Tips
+
+- Use `openpyxl.styles` for formatting (fonts, colors, borders)
+- Use `openpyxl.chart` for embedded charts
+- Use `ws.merge_cells()` for merged header rows
+- Use `openpyxl.utils` for column letter conversions
+- Add formulas as strings: `ws['D2'] = '=B2-C2'`