Spreadsheet Processor

This handles Excel file operations with a strong focus on financial modeling conventions. It enforces zero formula errors, uses openpyxl for preserving formulas and formatting, and includes a LibreOffice-based recalculation script to compute formula values. The color coding standards are straight from investment banking (blue for inputs, black for formulas, green for internal links), and it pushes you to use Excel formulas instead of hardcoding Python calculations so spreadsheets stay dynamic. The formula verification workflow is solid, with detailed error detection for REF, DIV/0, and other common issues. If you're building financial models or need bulletproof spreadsheet processing where formulas matter, this gives you the guardrails and tooling to do it right.

skills.sh installs: 626
GitHub stars: 48
last updated: Aug 21, 2026

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Install

$ npx -y skills add qodex-ai/ai-agent-skills --skill spreadsheet-processor --agent claude-code

Installs into .claude/skills of the current project.

Files

Requirements for Outputs

All Excel files

Zero Formula Errors

Every Excel model MUST be delivered with ZERO formula errors (#REF!, #DIV/0!, #VALUE!, #N/A, #NAME?)

Preserve Existing Templates (when updating templates)

Study and EXACTLY match existing format, style, and conventions when modifying files
Never impose standardized formatting on files with established patterns
Existing template conventions ALWAYS override these guidelines

Financial models

Color Coding Standards

Unless otherwise stated by the user or existing template

Industry-Standard Color Conventions

Blue text (RGB: 0,0,255): Hardcoded inputs, and numbers users will change for scenarios
Black text (RGB: 0,0,0): ALL formulas and calculations
Green text (RGB: 0,128,0): Links pulling from other worksheets within same workbook
Red text (RGB: 255,0,0): External links to other files
Yellow background (RGB: 255,255,0): Key assumptions needing attention or cells that need to be updated