What could be awesome is a new Nostr event kind in the 30000s with d tags that’s encrypted and contains something like a balance or expiry or similar and payment details/method - that a Nostr client app can subscribe to or fetch - and basically it could allow you to view your API/service usage/subscriptions/balances and pay or renew.

Useful for the paid translation service, paid relays, other helpful services?

What do people think? Good idea? Are client apps happy to build support?