What problem does it solve? Working with Excel files inside a chat assistant usually means manual copy-paste or downloading and editing files by hand. This Skill lets the agent create spreadsheets from CSV, JSON, or raw table data, edit existing workbooks in place, and read back values, formulas, and metadata without leaving the conversation. ## Core Features & Use Cases - Create from any source: Build .xlsx files from CSV text, JSON arrays, 2D arrays, or construct multi-sheet workbooks with formulas, conditional formatting, auto-filters, and named ranges. - In-place modification: Edit cells, append rows, add or delete sheets, and apply number formats to an existing workbook identified by document ID. - Detailed reading: Parse Excel files back to JSON, optionally including formulas, comments, hyperlinks, merged cells, and workbook properties. - Use Case: Ask the agent to turn a JSON sales export into a formatted multi-sheet workbook with SUM formulas and conditional formatting, then later update individual cells in that same file. ## Quick Start Ask the agent to create an Excel file from your CSV or JSON data, or to read and edit an existing spreadsheet by its document ID.
