From 5dcfe85306434f21ecb1e7a47edd92b2e3e64f9a Mon Sep 17 00:00:00 2001 From: fiatjaf Date: Sat, 18 Nov 2023 09:13:12 -0300 Subject: reformat a bunch of json things and small nitpicks. --- 89.md | 84 ++++++++++++++++++++++++++++++++++--------------------------------- 1 file changed, 43 insertions(+), 41 deletions(-) (limited to '89.md') diff --git a/89.md b/89.md index 73cb7bd..be3d075 100644 --- a/89.md +++ b/89.md @@ -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": , - "tags": [ - [ "d", ], - [ "a", "31990:app1-pubkey:", "wss://relay1", "ios" ], - [ "a", "31990:app2-pubkey:", "wss://relay2", "web" ] - ] + "kind": 31989, + "pubkey": , + "tags": [ + ["d", ], + ["a", "31990:app1-pubkey:", "wss://relay1", "ios"], + ["a", "31990:app2-pubkey:", "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": , - "content": "", - "tags": [ - [ "d", ], - [ "k", ], - [ "web", "https://..../a/", "nevent" ], - [ "web", "https://..../p/", "nprofile" ], - [ "web", "https://..../e/" ], - [ "ios", ".../" ] - ] + "kind": 31990, + "pubkey": "", + "content": "", + "tags": [ + ["d", ], + ["k", ], + ["web", "https://..../a/", "nevent"], + ["web", "https://..../p/", "nprofile"], + ["web", "https://..../e/"], + ["ios", ".../"] + ] } ``` * `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", , "web" ] - ] + "kind": 31989, + "tags": [ + ["d", "31337"], + ["a", "31990:1743058db7078661b94aaf4286429d97ee5257d14a86d6bfa54cb0482b876fb0:abcd", , "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", , '[{ "kinds": [31989], "#d": ["31337"], 'authors': [, ] }]']` +```json +["REQ", , '[{ "kinds": [31989], "#d": ["31337"], 'authors': [, ] }]'] +``` 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", , '[{ "kinds": [31990], "#k": [], 'authors': [...] }]']` +```json +["REQ", , '[{ "kinds": [31990], "#k": [], 'authors': [...] }]'] +``` -- cgit v1.2.3