nostr/nips
0
0
Fork 0
mirror of https://github.com/nostr-protocol/nips.git synced 2025-09-01 14:00:47 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity

reformat a bunch of json things and small nitpicks.

Browse Source
This commit is contained in:
fiatjaf
2023-11-18 09:13:12 -03:00
parent b0df71824f
commit 5dcfe85306
21 changed files with 385 additions and 365 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
89.md
View File

@@ -9,10 +9,12 @@ Recommended Application Handlers
This NIP describes `kind:31989` and `kind:31990`: a way to discover applications that can handle unknown event-kinds.
## Rationale
Nostr's discoverability and transparent event interaction is one of its most interesting/novel mechanics.
This NIP provides a simple way for clients to discover applications that handle events of a specific kind to ensure smooth cross-client and cross-kind interactions.
### Parties involved
There are three actors to this workflow:
* application that handles a specific event kind (note that an application doesn't necessarily need to be a distinct entity and it could just be the same pubkey as user A)
@@ -22,18 +24,18 @@ There are three actors to this workflow:
* user B, who seeks a recommendation for an app that handles a specific event kind
* Queries for `kind:31989` and, based on results, queries for `kind:31990`
# Events
## Events
## Recommendation event
### Recommendation event
```json
{
"kind": 31989,
"pubkey": <recommender-user-pubkey>,
"tags": [
[ "d", <supported-event-kind> ],
[ "a", "31990:app1-pubkey:<d-identifier>", "wss://relay1", "ios" ],
[ "a", "31990:app2-pubkey:<d-identifier>", "wss://relay2", "web" ]
]
"kind": 31989,
"pubkey": <recommender-user-pubkey>,
"tags": [
["d", <supported-event-kind>],
["a", "31990:app1-pubkey:<d-identifier>", "wss://relay1", "ios"],
["a", "31990:app2-pubkey:<d-identifier>", "wss://relay2", "web"]
]
}
```
@@ -47,34 +49,32 @@ The third value of the tag SHOULD be the platform where this recommendation migh
## Handler information
```json
{
"kind": 31990,
"pubkey": <pubkey>,
"content": "<optional-kind:0-style-metadata>",
"tags": [
[ "d", <random-id> ],
[ "k", <supported-event-kind> ],
[ "web", "https://..../a/<bech32>", "nevent" ],
[ "web", "https://..../p/<bech32>", "nprofile" ],
[ "web", "https://..../e/<bech32>" ],
[ "ios", ".../<bech32>" ]
]
"kind": 31990,
"pubkey": "<application-pubkey>",
"content": "<optional-kind:0-style-metadata>",
"tags": [
["d", <random-id>],
["k", <supported-event-kind>],
["web", "https://..../a/<bech32>", "nevent"],
["web", "https://..../p/<bech32>", "nprofile"],
["web", "https://..../e/<bech32>"],
["ios", ".../<bech32>"]
]
}
```
* `content` is an optional `metadata`-like stringified JSON object, as described in NIP-01. This content is useful when the pubkey creating the `kind:31990` is not an application. If `content` is empty, the `kind:0` of the pubkey should be used to display application information (e.g. name, picture, web, LUD16, etc.)
* `k` tags' value is the event kind that is supported by this `kind:31990`.
Using a `k` tag(s) (instead of having the kind onf the NIP-33 `d` tag) provides:
* Multiple `k` tags can exist in the same event if the application supports more than one event kind and their handler URLs are the same.
* The same pubkey can have multiple events with different apps that handle the same event kind.
* `bech32` in a URL MUST be replaced by clients with the NIP-19-encoded entity that should be loaded by the application.
Multiple tags might be registered by the app, following NIP-19 nomenclature as the second value of the array.
A tag without a second value in the array SHOULD be considered a generic handler for any NIP-19 entity that is not handled by a different tag.
# Client tag
## Client tag
When publishing events, clients MAY include a `client` tag in the same format as the recommendation event's `a` tags. This has privacy implications for users, so clients SHOULD allow users to opt-out of using this tag.
```json
@@ -87,43 +87,45 @@ When publishing events, clients MAY include a `client` tag in the same format as
}
```
# User flow
## User flow
A user A who uses a non-`kind:1`-centric nostr app could choose to announce/recommend a certain kind-handler application.
When user B sees an unknown event kind, e.g. in a social-media centric nostr client, the client would allow user B to interact with the unknown-kind event (e.g. tapping on it).
The client MIGHT query for the user's and the user's follows handler.
# Example
## Example
## User A recommends a `kind:31337`-handler
### User A recommends a `kind:31337`-handler
User A might be a user of Zapstr, a `kind:31337`-centric client (tracks). Using Zapstr, user A publishes an event recommending Zapstr as a `kind:31337`-handler.
```json
{
"kind": 31989,
"tags": [
[ "d", "31337" ],
[ "a", "31990:1743058db7078661b94aaf4286429d97ee5257d14a86d6bfa54cb0482b876fb0:abcd", <relay-url>, "web" ]
]
"kind": 31989,
"tags": [
["d", "31337"],
["a", "31990:1743058db7078661b94aaf4286429d97ee5257d14a86d6bfa54cb0482b876fb0:abcd", <relay-url>, "web"]
],
...
}
```
## User B interacts with a `kind:31337`-handler
User B might see in their timeline an event referring to a `kind:31337` event
(e.g. a `kind:1` tagging a `kind:31337`).
### User B interacts with a `kind:31337`-handler
User B might see in their timeline an event referring to a `kind:31337` event (e.g. a `kind:1` tagging a `kind:31337`).
User B's client, not knowing how to handle a `kind:31337` might display the event
using its `alt` tag (as described in NIP-31). When the user clicks on the event,
the application queries for a handler for this `kind`:
User B's client, not knowing how to handle a `kind:31337` might display the event using its `alt` tag (as described in NIP-31). When the user clicks on the event, the application queries for a handler for this `kind`:
`["REQ", <id>, '[{ "kinds": [31989], "#d": ["31337"], 'authors': [<user>, <users-contact-list>] }]']`
```json
["REQ", <id>, '[{ "kinds": [31989], "#d": ["31337"], 'authors': [<user>, <users-contact-list>] }]']
```
User B, who follows User A, sees that `kind:31989` event and fetches the `a`-tagged event for the app and handler information.
User B's client sees the application's `kind:31990` which includes the information to redirect the user to the relevant URL with the desired entity replaced in the URL.
## Alternative query bypassing `kind:31989`
Alternatively, users might choose to query directly for `kind:31990` for an event kind. Clients SHOULD be careful doing this and use spam-prevention mechanisms to avoid directing users to malicious handlers.
### Alternative query bypassing `kind:31989`
Alternatively, users might choose to query directly for `kind:31990` for an event kind. Clients SHOULD be careful doing this and use spam-prevention mechanisms or querying high-quality restricted relays to avoid directing users to malicious handlers.
`["REQ", <id>, '[{ "kinds": [31990], "#k": [<desired-event-kind>], 'authors': [...] }]']`
```json
["REQ", <id>, '[{ "kinds": [31990], "#k": [<desired-event-kind>], 'authors': [...] }]']
```