NIP-47
Nostr Wallet Connect
NIP-47 lets apps request Lightning wallet actions through Nostr. It can power payments, invoices, and wallet interactions without embedding wallet credentials in every app.
NIP-47 is one of the small agreements that lets different Nostr apps understand the same kind of activity. In everyday terms, it is like agreeing on the shape of a form: once everyone uses the same form for nostr wallet connect, people can move between apps without losing the meaning of what they created.
Read more in the official 47.md NIP document.