Turn an Excel Workbook Into a Simple App With Tool Builder
· 3 min read
Most Excel files are already applications in disguise. They have inputs, rules, exceptions, and repeated handoffs. What they usually do not have is an interface built for the job people are actually trying to do.
Tool Builder is a way to add that interface without leaving Excel. You ask an AI tool to generate a small single-file web app, paste it into Tool Builder, and run it directly in the workbook. The workbook stays the source of truth. The app becomes the simpler surface around it.