What problem does it solve? Building or editing spreadsheet workbooks by hand is slow and error-prone, especially when formulas, number formats, charts, and domain conventions must all stay consistent and auditable. ## Core Features & Use Cases - Workbook Authoring: Create or edit .xlsx, .csv, and .tsv files with formula-driven calculations, typed number/date formats, conditional formatting, tables, charts, and sparklines via the @oai/artifact-tool JS library. - Analysis & Q&A: Read, filter, aggregate, and trace formulas in existing workbooks to answer questions without modifying the file. - Domain Guidance: Apply built-in conventions for financial models, FP&A, healthcare, marketing, and scientific research workbooks, plus a Google Sheets import path for native Sheets deliverables. - Use Case: Ask for a DCF valuation model and receive a verified .xlsx with assumption cells, color-coded inputs, sensitivity tables, a Checks sheet, and rendered visual verification. ## Quick Start Use the Spreadsheets skill to create a formatted .xlsx workbook with formulas and a chart from my data.
