New here? Try the whole thing in about 3 minutes.
Crumb is a working demo. You'll play the shop, the customer and an AI shopper, with real PayPal sandbox payments. No real money moves.
Tonight's leftovers, a short walk away.
Local shops photograph what didn't sell and it's listed in seconds. Reserve with PayPal: we only hold the money, and you're charged at the counter for what's actually in your bag. Shop runs out? The hold just disappears.
How paying works
- Reserve — PayPal holds the price.
- Collect — staff snap the open bag; AI checks it against the listing.
- Pay only for what's there. The rest of the hold is released.