App Payments via NWC

An app's connection has a 1,000-sat monthly budget and has already spent 1,000 sats this month. It sends another payment request. What happens?

• The wallet pays and raises the budget
• The wallet refuses with QUOTA_EXCEEDED until the budget renews
• The app switches to your main balance

To compare a price in sats with a price in dollars, what do you need?

• Nothing; 1 sat is about 1 cent
• One BTC price, dated, to convert both to the same unit
• The app's routing fee