NIP-20

Command results

NIP-20 standardizes how relays reply when a client publishes something. It lets apps show clearer success and error messages instead of guessing what happened.

NIP-20 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 command results, people can move between apps without losing the meaning of what they created.

Read more in the official 20.md NIP document.