Kind 6: Repost

Overview

Repost events (kind 6) allow users to share existing content with their followers, similar to "retweets" in other platforms. This event type is specifically for reposting kind 1 text notes and signals to followers that a particular note is worth reading.

Specification

Property	Value
Kind Number	6
Event Range	Regular
Defined in	NIP-18

Content Format

The content field should contain the stringified JSON of the reposted note. It may also be empty, though this is not recommended except when reposting NIP-70 protected events.

Schema

{
  "id": "5c83da77af1dec6d7289834998ad7aafbd9e2191396d75ec3cc27f5a77226f36",
  "pubkey": "f7234bd4c1394dda46d09f35bd384dd30cc552ad5541990f98844fb06676e9ca",
  "created_at": 1671217000,
  "kind": 1,
  "tags": [],
  "content": "This is the original post that's being reposted!",
  "sig": "a76f39224cebd44cf04eeebe01d5ab2e8f7a3e5e56c83cadd252e7bc5e2e34fd7ad7148cf7a2c7620d9490ccf2e1bac521995725f2e1f543159b8eb98bfdd405"
}

Or, for protected events:

""

Tags

Tag Name	Description	Format	Required
e	Referenced note to repost	["e", "<event-id>", "<relay-url>"]	Yes
p	Author of the reposted note	["p", "<pubkey-hex>"]	Recommended

Client Behavior

Clients should:

1. Display reposts in feeds, clearly indicating they are reposts
2. Show the original author's information
3. When creating reposts:
   • Include the full event JSON in the content when possible
   • Always include the e tag with a relay URL where the original can be found
   • Include the p tag with the original author's pubkey

Clients should distinguish between:

• Regular reposts (kind 6) - for sharing exact copies of text notes
• Quote reposts (kind 1 with q tags) - for sharing with added commentary
• Generic reposts (kind 16) - for reposting content that isn't kind 1

Relay Behavior

Relays should:

1. Store repost events alongside regular notes
2. Make reposts discoverable in relevant subscriptions and filters

Use Cases

• Sharing interesting content with followers
• Amplifying the reach of valuable notes
• Building content curation streams

Example

{
  "id": "4376c65d2f232afbe9b882a35baa4f6fe8667c4e684749af565f981833ed6a65",
  "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3",
  "created_at": 1671217411,
  "kind": 6,
  "tags": [
    ["e", "5c83da77af1dec6d7289834998ad7aafbd9e2191396d75ec3cc27f5a77226f36", "wss://nostr.example.com"],
    ["p", "f7234bd4c1394dda46d09f35bd384dd30cc552ad5541990f98844fb06676e9ca"]
  ],
  "content": "{\"id\":\"5c83da77af1dec6d7289834998ad7aafbd9e2191396d75ec3cc27f5a77226f36\",\"pubkey\":\"f7234bd4c1394dda46d09f35bd384dd30cc552ad5541990f98844fb06676e9ca\",\"created_at\":1671217000,\"kind\":1,\"tags\":[],\"content\":\"This is the original post that's being reposted!\",\"sig\":\"a76f39224cebd44cf04eeebe01d5ab2e8f7a3e5e56c83cadd252e7bc5e2e34fd7ad7148cf7a2c7620d9490ccf2e1bac521995725f2e1f543159b8eb98bfdd405\"}",
  "sig": "908a15e46fb4d8675bab026fc230a0e3542bfade63da02d542fb78b2a8513fcd0092619a2c8c1221e581946e0191f2af505dfdf8657a414dbca329186f009262"
}

References

• NIP-18: Reposts
• NIP-21: nostr: URI scheme
• NIP-70: Protected Events

Related Kinds

• Kind 1: Short Text Note - The kind being reposted
• Kind 16: Generic Repost - For reposting events that aren't kind 1
• Quote reposts (kind 1 with q tags) - For sharing with added commentary