What problem does it solve?
This Skill prevents brittle spreadsheet outputs by enforcing a documentation-first, formula-safe workflow for creating, editing, and validating Excel deliverables.
Core Features & Use Cases
- Spreadsheet-first outputs (.xlsx/.xlsm): Create or modify spreadsheets as the primary deliverable, including conversions from tabular sources.
- Formula correctness guarantees: Requires formulas (not hardcoded computed values) and verifies “zero formula errors” after recalculation.
- Automated recalculation + error scanning: Uses LibreOffice to recalculate formulas and detects common Excel error tokens (e.g., #REF!, #DIV/0!, #VALUE!, #NAME?).
- Formatting and modeling guardrails: Enforces consistent professional fonts and, for financial models, applies color-coding conventions for inputs vs. formulas vs. links.
- Data preparation workflows: Supports analysis and restructuring of messy tabular data via pandas and spreadsheet edits.
- Verification gating: Aligns with the Stream Coding pipeline by treating recalculation and error scanning as a hard verification gate before delivery.
Quick Start
Use the xlsx skill to update the spreadsheet 'model.xlsx' using formulas (not hardcoded calculations), recalculate all formulas, and return the corrected file with zero Excel formula errors.