Tell us what you are trying to prove
Not a full specification. The thing you actually need to find out, whether that is investor interest, whether users want it, or whether the process works at all.
We build the smallest version that proves it
Narrow on purpose. One kind of user, one job, done properly, so when something does not work you can tell what was wrong.
You use it for real, then decide
Extend it, hand it to someone else to take further, or stop. Either answer is useful, and you will have spent far less finding it than a full build would have cost.