Nostr NIPS 22
NIP-22
Comment
draft
optional
A comment is a threading note always scoped to a root event or an I
-tag.
It uses kind:1111
with plaintext .content
(no HTML, Markdown, or other formatting).
Comments MUST point to the root scope using uppercase tag names (e.g. K
, E
, A
or I
)
and MUST point to the parent item with lowercase ones (e.g. k
, e
, a
or i
).
{
kind: 1111,
content: '<comment>',
tags: [
// root scope: event addresses, event ids, or I-tags.
["<A, E, I>", "<address, id or I-value>", "<relay or web page hint>", "<root event's pubkey, if an E tag>"],
// the root item kind
["K", "<root kind>"],
// parent item: event addresses, event ids, or i-tags.
["<a, e, i>", "<address, id or i-value>", "<relay or web page hint>", "<parent event's pubkey, if an e tag>"],
// parent item kind
["k", "<parent comment kind>"]
]
// other fields
}
Tags K
and k
MUST be present to define the event kind of the root and the parent items.
I
and i
tags create scopes for hashtags, geohashes, URLs, and other external identifiers.
The possible values for i
tags – and k
tags, when related to an extenal identity – are listed on NIP-73
.
Their uppercase versions use the same type of values but relate to the root item instead of the parent one.
q
tags MAY be used when citing events in the .content
with NIP-21
.
["q", "<event-id> or <event-address>", "<relay-url>", "<pubkey-if-a-regular-event>"]
p
tags SHOULD be used when mentioning pubkeys in the .content
with NIP-21
.
If the parent item is an event, a p
tag set to the parent event’s author SHOULD be added.
["p", "<pubkey>", "<relay-url>"]
Examples
A comment on a blog post looks like this:
{
kind: 1111,
content: 'Great blog post!',
tags: [
// top-level comments scope to event addresses or ids
["A", "30023:3c9849383bdea883b0bd16fece1ed36d37e37cdde3ce43b17ea4e9192ec11289:f9347ca7", "wss://example.relay"],
// the root kind
["K", "30023"],
// the parent event address (same as root for top-level comments)
["a", "30023:3c9849383bdea883b0bd16fece1ed36d37e37cdde3ce43b17ea4e9192ec11289:f9347ca7", "wss://example.relay"],
// when the parent event is replaceable or addressable, also include an `e` tag referencing its id
["e", "5b4fc7fed15672fefe65d2426f67197b71ccc82aa0cc8a9e94f683eb78e07651", "wss://example.relay"],
// the parent event kind
["k", "30023"]
]
// other fields
}
A comment on a NIP-94 file looks like this:
{
kind: 1111,
content: 'Great file!',
tags: [
// top-level comments have the same scope and reply to addresses or ids
["E", "768ac8720cdeb59227cf95e98b66560ef03d8bc9a90d721779e76e68fb42f5e6", "wss://example.relay", "3721e07b079525289877c366ccab47112bdff3d1b44758ca333feb2dbbbbe5bb"],
// the root kind
["K", "1063"],
// the parent event id (same as root for top-level comments)
["e", "768ac8720cdeb59227cf95e98b66560ef03d8bc9a90d721779e76e68fb42f5e6", "wss://example.relay", "3721e07b079525289877c366ccab47112bdff3d1b44758ca333feb2dbbbbe5bb"],
// the parent kind
["k", "1063"]
]
// other fields
}
A reply to a comment looks like this:
{
kind: 1111,
content: 'This is a reply to "Great file!"',
tags: [
// nip-94 file event id
["E", "768ac8720cdeb59227cf95e98b66560ef03d8bc9a90d721779e76e68fb42f5e6", "wss://example.relay", "fd913cd6fa9edb8405750cd02a8bbe16e158b8676c0e69fdc27436cc4a54cc9a"],
// the root kind
["K", "1063"],
// the parent event
["e", "5c83da77af1dec6d7289834998ad7aafbd9e2191396d75ec3cc27f5a77226f36", "wss://example.relay", "93ef2ebaaf9554661f33e79949007900bbc535d239a4c801c33a4d67d3e7f546"],
// the parent kind
["k", "1111"]
]
// other fields
}
A comment on a website’s url looks like this:
{
kind: 1111,
content: 'Nice article!',
tags: [
// referencing the root url
["I", "https://abc.com/articles/1"],
// the root "kind": for an url, the kind is its domain
["K", "https://abc.com"],
// the parent reference (same as root for top-level comments)
["i", "https://abc.com/articles/1"],
// the parent "kind": for an url, the kind is its domain
["k", "https://abc.com"]
]
// other fields
}
A podcast comment example:
{
id: "80c48d992a38f9c445b943a9c9f1010b396676013443765750431a9004bdac05",
pubkey: "252f10c83610ebca1a059c0bae8255eba2f95be4d1d7bcfa89d7248a82d9f111",
kind: 1111,
content: "This was a great episode!",
tags: [
// podcast episode reference
["I", "podcast:item:guid:d98d189b-dc7b-45b1-8720-d4b98690f31f", "https://fountain.fm/episode/z1y9TMQRuqXl2awyrQxg"],
// podcast episode type
["K", "podcast:item:guid"],
// same value as "I" tag above, because it is a top-level comment (not a reply to a comment)
["i", "podcast:item:guid:d98d189b-dc7b-45b1-8720-d4b98690f31f", "https://fountain.fm/episode/z1y9TMQRuqXl2awyrQxg"],
["k", "podcast:item:guid"]
]
// other fields
}
A reply to a podcast comment:
{
kind: 1111,
content: "I'm replying to the above comment.",
tags: [
// podcast episode reference
["I", "podcast:item:guid:d98d189b-dc7b-45b1-8720-d4b98690f31f", "https://fountain.fm/episode/z1y9TMQRuqXl2awyrQxg"],
// podcast episode type
["K", "podcast:item:guid"],
// this is a reference to the above comment
["e", "80c48d992a38f9c445b943a9c9f1010b396676013443765750431a9004bdac05", "wss://example.relay", "252f10c83610ebca1a059c0bae8255eba2f95be4d1d7bcfa89d7248a82d9f111"],
// the parent comment kind
["k", "1111"]
]
// other fields
}
Source: nostr-protocol/nips/22.md version: f3244a0 2024-11-18T02:33:29+09:00