NIPs

NIPs stand for Nostr Implementation Possibilities. They exist to document what MUST, what SHOULD and what MAY be implemented by Nostr-compatible relay and client software.

• NIP-01: Basic protocol flow description
• NIP-02: Contact List and Petnames
• NIP-03: OpenTimestamps Attestations for Events
• NIP-04: Encrypted Direct Message
• NIP-05: Mapping Nostr keys to DNS-based internet identifiers
• NIP-06: Basic key derivation from mnemonic seed phrase
• NIP-07: window.nostr capability for web browsers
• NIP-08: Handling Mentions
• NIP-09: Event Deletion
• NIP-10: Conventions for clients' use of e and p tags in text events.
• NIP-11: Relay Information Document
• NIP-12: Generic Tag Queries
• NIP-13: Proof of Work
• NIP-14: Subject tag in text events.
• NIP-15: End of Stored Events Notice
• NIP-16: Event Treatment
• NIP-22: Event created_at Limits
• NIP-25: Reactions

Event Kinds

kind	description	NIP
0	Metadata	1, 5
1	Text	1
2	Recommend Relay	1
3	Contacts	2
4	Encrypted Direct Messages	4
5	Event Deletion	9
7	Reaction	25

Please update this list when proposing NIPs introducing new event kinds.

When experimenting with kinds, keep in mind the classification introduced by NIP-16.

Criteria for acceptance of NIPs

1. They should be implemented somewhere at least as a prototype somewhere.
2. They should make sense.
3. Other rules will be made up when necessary.

License

All NIPs are public domain.