NIP-37

Draft Wraps

draft optional

This NIP defines kind 31234 as an encrypted storage for unsigned draft events of any other kind.

The draft is JSON-stringified, NIP44-encrypted to the signer’s public key and placed inside the .content.

k tags identify the kind of the draft.

{
  "kind": 31234,
  "tags": [
    ["d", "<identifier>"],
    ["k", "<kind of the draft event>"], // required
    ["expiration", "now + 90 days"] // recommended
  ],
  "content": nip44Encrypt(JSON.stringify(draft_event)),
  // other fields
}

A blanked .content field signals that the draft has been deleted.

NIP-40 expiration tags are recommended.

Clients SHOULD publish kind 31234 events to relays listed on kind 10013 below.

Checkpoints

kind:1234 defines checkpoints that belong to a parent kind:31234 event. These can serve to provide a revision history of a parent event.

{
  "kind": 1234,
  "tags": [
    ["a", "31234:<pubkey>:<identifier>"]
  ],
  "content": nip44Encrypt(JSON.stringify(draft_event)),
}

Relay List for Private Content

Kind 10013 indicates the user’s preferred relays to store private events like Draft Wraps.

The event MUST include a list of relay URLs in private tags. Private tags are JSON Stringified, NIP44-encrypted to the signer’s keys and placed inside the .content of the event.

{
  "kind": 10013,
  "tags": [],
  "content": nip44Encrypt(
    JSON.stringify(
      [
        ["relay", "wss://myrelay.mydomain.com"]
      ]
    )
  )
  //...other fields
}

It’s recommended that Private Storage relays SHOULD be NIP-42 -authed and only allow downloads of events signed by the authed user.

Clients MUST publish kind 10013 events to the author’s NIP-65 write relays.

Source: nostr-protocol/nips/37.md version: 407625b 2026-05-18T11:10:57+03:00