xlsx

Create, edit, and validate Excel workbooks with formulas and format conversion.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/EpicBlackWolfZ/Gildedrose-kata --skill xlsx-epicblackwolfz
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: xlsx
Source: https://github.com/EpicBlackWolfZ/Gildedrose-kata/tree/main/.claude/skills/xlsx
Command: npx skills add https://github.com/EpicBlackWolfZ/Gildedrose-kata --skill xlsx-epicblackwolfz

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires openpyxl, lxml, defusedxml.

What problem does it solve?

This skill automates the heavy, error-prone work of creating, updating, cleaning, and formatting spreadsheets, enabling reliable transformation of tabular data into polished XLSX outputs.

Core Features & Use Cases

  • Open, read, edit, and fix existing .xlsx, .xlsm, .csv, or .tsv files (e.g., adding columns, applying formulas, formatting, charting, cleaning messy data).
  • Create new spreadsheets from scratch or from other data sources, and convert between tabular file formats as part of data pipelines.
  • Use cases include data cleaning for reports, preparing dashboards, and converting datasets for archival in a consistent spreadsheet format.

Quick Start

Process an input workbook to clean data, apply formatting, and save the result as a new or updated XLSX file.

Frequently Asked Questions about xlsx

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

FAQPage Schema
How do I automate Excel formatting and data cleaning in xlsx workflows?

Automate Excel formatting and data cleaning by processing input workbooks to fix messy data, apply formulas, and save deterministic XLSX outputs. This targets data-cleaning and reporting pipelines, ensuring zero formula errors and reliable transformation of tabular data into polished spreadsheets.

Can I convert CSV files to XLSX format for data pipelines?

Yes, you can convert CSV files to XLSX format for data pipelines. The skill handles format conversion across CSV and XLSX workflows, enabling you to create new spreadsheets from other data sources and convert datasets for consistent archival in a standard spreadsheet format.

Does openpyxl support editing and fixing existing Excel workbooks?

Yes, openpyxl supports editing and fixing existing Excel workbooks. You can open, read, and update .xlsx, .xlsm, .csv, or .tsv files to add columns, apply formulas, implement charting, and clean data while ensuring deterministic results through underlying libraries like lxml.

What is the best way to prepare dashboards from raw spreadsheet data?

The best way to prepare dashboards from raw spreadsheet data is to automate the heavy preparation work. This involves cleaning messy data, applying consistent formatting, and validating formulas to produce reliable XLSX outputs ready for business analytics and reporting pipelines.

Are there limitations when applying formulas to Excel workbooks programmatically?

Limitations when applying formulas to Excel workbooks programmatically are mitigated by leveraging openpyxl and lxml. The skill ensures deterministic results and zero formula errors during spreadsheet creation, editing, and validation for reporting tasks.

Do I need Python to automate spreadsheet creation and validation?

You need a Python environment to automate spreadsheet creation and validation, as the skill relies on dependencies like openpyxl, lxml, and defusedxml to process workbooks, clean data, and apply formatting for business analytics pipelines.