npub1e6…jw4fn on Nostr: some prior work that I've come across: []() uses Cashu tokens. You can buy API tokens ...

some prior work that I've come across:

[https://demo.proxnut.com/](https://demo.proxnut.com/) uses Cashu tokens. You can buy API tokens in the browser over lightning.

[https://github.com/cashubtc/xcashu](https://github.com/cashubtc/xcashu) is a similar but older project. If you don't have a valid token, you get a lightning invoice instead.

[https://github.com/Kodylow/matador](https://github.com/Kodylow/matador) is similar: it wraps an API with 402 payment required

[https://github.com/supertestnet/btcpaywall](https://github.com/supertestnet/btcpaywall) is a paywall for wordpress

Then there is a paywall plugin for lnbits

And this post: https://stacker.news/items/140636