I just learned yesterday that nostr:npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8n had a Lightningize API since freakin 2018!!
It's called Paypercall (go figure) and it it predates all the recent x-cashu ( nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg) and L402 stuff.
I don't know of I should laught or cry.
https://blog.blockstream.com/en-paypercall-shows-the-full-power-of-lightning-charge/…