LNURL has some great built-in features, exactly what I was looking for Zapit. 

Next version of Zapit will be truly private and unstoppable. It will also be much lighter and significantly faster than the previous version.

Paywalled content links, packaged into lightning invoices & vouchers, directly connected to my lightning wallets without any middle man. 🤌
https://image.nostr.build/5b665b2828eb50d94fdf84b6d491fdbcf51758dda9593c0995bc1c17b7a68dc6.jpg