excel-generator

Generate .xlsx files with formatting, formulas, charts, and data validation using openpyxl or xlsxwriter.

Updated Apr 1, 2026

Search Tags:#charts #openpyxl #spreadsheet #excel #report #data-validation #xlsxwriter

Ready to run

npx skills add https://github.com/koya-alt/Catalyst --skill excel-generator-koya-alt

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: excel-generator
Source: https://github.com/koya-alt/Catalyst/tree/main/local/secondary_skills/excel-generator
Command: npx skills add https://github.com/koya-alt/Catalyst --skill excel-generator-koya-alt

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Building Excel workbooks with proper styling, formulas, charts, and data validation is time‑consuming and error‑prone when done manually in the spreadsheet application.

Core Features & Use Cases

Create .xlsx files with custom formatting, formulas, charts, and data‑validation rules.
Choose library: openpyxl for editing existing files, xlsxwriter for fast write‑only generation.
Use cases: financial reports, sales dashboards, inventory trackers, or any data‑driven presentation that requires polished Excel output.

Quick Start

Use the excel-generator skill to produce a formatted sales report spreadsheet with charts.

Frequently Asked Questions about excel-generator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I generate Excel spreadsheets programmatically with formulas and charts?▼

You generate Excel spreadsheets programmatically by using Python libraries like openpyxl or xlsxwriter to create .xlsx files with custom formatting, formulas, and embedded charts.

What is the best way to build a sales dashboard in an xlsx file?▼

Building a sales dashboard in an xlsx file is best done by programmatically applying conditional formatting and charts using xlsxwriter for fast, write-only generation.

Does openpyxl work for modifying existing xlsx files with conditional formatting?▼

Yes, openpyxl works for modifying existing xlsx files, allowing you to read, edit, and apply conditional formatting to workbooks that have already been created and saved.

When should I use xlsxwriter instead of openpyxl for report generation?▼

Use xlsxwriter instead of openpyxl for report generation when you need fast, write-only creation of new .xlsx files, whereas openpyxl is better suited for editing existing workbooks.

Can I add data-validation rules to an Excel worksheet using Python?▼

Yes, you can add data-validation rules to an Excel worksheet using Python by leveraging openpyxl or xlsxwriter to programmatically define validation criteria within the generated .xlsx file.