Use case
Ask your spreadsheet a question.
Which customers spent the most last quarter? Type that, in those words, at a spreadsheet or your own database — and get an answer worked out from your actual rows, with the exact numbers shown underneath. Nothing to build, nothing to learn.
Why it’s for you
It answers from your rows, not from thin air
The answer arrives in plain English, and the table it came from is right there underneath it — so you can check the working instead of taking a number on faith. That's the difference between a summary and something you'd put in front of your boss.
Wherever the data already lives
A .csv on your computer, an Excel workbook (it asks which sheet), cells pasted straight out of Excel or Sheets, a JSON file, or a published sheet at a web address. Already have a real database — Supabase, Turso, Neon, D1, Firestore, a JSON endpoint? Connect it once and ask away. PromptDeck reads from it and never writes back.
Nothing is built, nothing is kept
This is the quick look, not a project. No tool gets created, no rows get saved, nothing changes on your machine unless you decide to keep something. Ask, get the answer, close it.
And when the answer should stick around
Sometimes the question turns out to be a weekly one. That's the moment to describe it as a tool instead — PromptDeck builds a mini app that keeps its rows, totals them up, and is there next Monday. The analyst is the look; the mini app is the thing you keep.