(recommended) is the author's opinion.
- NIP-01 Basic protocol flow description (required)
- ~~NIP-04 Encrypted Direct Message~~ (deprecated but still in use)
- NIP-09 Event Deletion Request (recommended)
- NIP-11 Relay Information Document (recommended)
- NIP-13 Proof of Work
- NIP-17 Private Direct Messages
- ~~NIP-26 Delegated Event Signing~~ (deprecated)
- NIP-29 Relay-based Groups
- NIP-40 Expiration Timestamp
- NIP-42 Authentication of clients to relays
- NIP-43 Relay Access Metadata and Requests
- NIP-45 Event Counts
- NIP-46 Nostr Remote Signing
- NIP-50 Search Capability
- NIP-59 Gift Wrap
- NIP-62 Request to Vanish (recommended)
- NIP-66 Relay Discovery and Liveness Monitoring
- NIP-70 Protected Events (recommended)
- NIP-77 Negentropy Syncing