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1. Embed this notice
   Steve Bate (steve@social.technoetic.com)'s status on Friday, 27-Oct-2023 08:09:48 JST Steve Bate

   Is anybody aware of the #ActivityPub actor “streams” property being used in an implementation?

   • Embed this notice
     silverpill (silverpill@mitra.social)'s status on Friday, 27-Oct-2023 08:09:47 JST silverpill

     in reply to

     @steve I haven't seen it being used. This AP primer page advises against using this property: https://www.w3.org/wiki/ActivityPub/Primer/Streams

   • Embed this notice
     silverpill (silverpill@mitra.social)'s status on Friday, 27-Oct-2023 10:44:43 JST silverpill

     in reply to

     • arcanicanis

     @arcanicanis @steve I think it can be a list of URLs, or a list of embedded collections, or even a mix of the two.

     Here's a discussion that led to the creation of the aforementioned primer page: https://github.com/w3c/activitypub/issues/299

   • Embed this notice
     arcanicanis (arcanicanis@were.social)'s status on Friday, 27-Oct-2023 10:44:44 JST arcanicanis

     in reply to

     • silverpill

     That’s a bizarre coincidence. I was just noticing streams property in the spec a few hours earlier while reading over it, realizing it’s something I was looking for previously. I assume it’s just up to someone making a semantically proper use of it.

     Not sure if it’s intended to be just to be a list of collection URLs, embedded Collection objects, or maybe PropertyType objects?

   • Embed this notice
     silverpill (silverpill@mitra.social)'s status on Friday, 27-Oct-2023 22:37:35 JST silverpill

     in reply to

     • arcanicanis

     @arcanicanis @steve If you add inbox and outbox properties to your collection object, it will become an actor:

     https://www.w3.org/TR/activitypub/#actor-objects

     However, some implementations may refuse to recognize an actor object if its type is not one of actor types defined in ActivityStreams vocabulary:

     https://www.w3.org/TR/activitystreams-vocabulary/#actor-types

   • Embed this notice
     arcanicanis (arcanicanis@were.social)'s status on Friday, 27-Oct-2023 22:37:37 JST arcanicanis

     in reply to

     • silverpill

     Simple enough. At least Collections/OrderedCollections can have a description (such as the summary property as mentioned in the ActivityStreams vocab spec, in an example). Hopefully I can make use of this for separating out “gallery upload” posts from microblogging posts. Although I guess it probably doesn’t have much utility since I don’t think any implementations let you follow a collection instead of an actor (or to specify what collection(s) you want to subscribe to in a Follow request? ..That would be an interesting extension..), I guess it’s still stuck to needing a ‘virtual’ actor anyway for those sort of ‘substreams’ (like PeerTube does, if I remember correctly).