xlsx

Create, edit, and analyze Excel workbooks with formulas and recalculation.

Updated Jun 20, 2025
One-click install
npx skills add https://github.com/kerryback/mgmt638 --skill xlsx-kerryback
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: xlsx
Source: https://github.com/kerryback/mgmt638/tree/main/.claude/skills/xlsx
Command: npx skills add https://github.com/kerryback/mgmt638 --skill xlsx-kerryback

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires pandas, openpyxl, and includes scripts (resource) components.

What problem does it solves? Manually creating, editing, and analyzing complex Excel spreadsheets is time-consuming and error-prone, especially when dealing with formulas, formatting, and data consistency. This skill automates these tasks, ensuring professional, error-free, and dynamic spreadsheets, freeing you from tedious manual work.

Core Features & Use Cases

  • Dynamic Spreadsheet Creation: Build new Excel files with formulas, formatting, and data, ensuring zero formula errors and adherence to financial modeling standards.
  • Intelligent Editing: Modify existing spreadsheets while preserving formulas and adhering to established templates, maintaining data integrity.
  • Automated Recalculation: Uses LibreOffice to recalculate formulas and verify outputs, providing detailed error reports to quickly identify and fix issues.
  • Use Case: Generate a monthly financial report in Excel, populating it with data from a database, applying specific currency and percentage formatting, and including formulas for key performance indicators, then automatically recalculate all values and verify for errors.

Quick Start

Create a new Excel file named 'monthly_sales.xlsx'. Add a sheet named 'Sales Data' with columns 'Month' and 'Revenue'. Populate it with sample data for 3 months, then add a formula in cell A5 to sum the revenue.

Frequently Asked Questions about xlsx

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

FAQPage Schema
How do I automate Excel spreadsheet creation with formulas and formatting?

Automate Excel spreadsheet creation by building new .xlsx files with formulas, data, and formatting applied programmatically. This skill uses openpyxl to construct workbooks with zero formula errors, proper number formatting, and adherence to financial modeling standards, eliminating manual entry and formatting work.

Can I edit existing Excel files while preserving formulas and templates?

Yes, this skill modifies existing .xlsx, .xlsm, .csv, and .tsv files while preserving formulas and template structure. It maintains data integrity by respecting established cell references, formatting conventions, and color-coding, preventing accidental overwrites of critical formula logic.

How do I verify Excel formulas are calculating correctly across my workbook?

Automate formula verification by recalculating all values using LibreOffice through the recalc.py process. This detects formula errors, validates outputs, and generates detailed error reports, ensuring your financial models and data analysis produce accurate results.

What's the best way to generate dynamic financial reports in Excel with data and formulas?

Generate financial reports by combining data population, formula injection, currency and percentage formatting, and automated recalculation. This workflow creates professional Excel files with KPI formulas, applies consistent formatting, and verifies all calculations without manual intervention.

Does this work with CSV and TSV files, or only Excel formats?

This skill handles .xlsx, .xlsm, .csv, and .tsv formats. It automates workflows across multiple spreadsheet formats, enabling you to read, edit, and analyze tabular data consistently while applying formulas and recalculation logic where applicable.

Why should I use formulas instead of hardcoding values in Excel analysis?

Formulas enable dynamic spreadsheets that recalculate automatically when inputs change, maintain consistency across models, and reduce errors from manual calculations. This skill enforces formula-based workflows, documenting any hardcoded values and ensuring template integrity for financial modeling and data analysis.