Just need a way to include a some data (a zap request nostr note) when fetching a bolt12 invoice. Not sure if thats possible nostr:npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s

With lnurl we include this in the deschash (cln stores the original). So we can retrieve it when the invoice is paid and then we can send the zap.