FEP-03c1: Actors without acct-URI

Warning

このFEPはまだ翻訳されていません。

ここから翻訳に協力することができます。

Summary

Most current Fediverse applications use an acct-URI as unique display name for actors. Usually, this display is done by displaying acct:user@domain.example as @user@domain.example. This FEP states that if there is no acct-URI associated with an actor, the actor should be displayed as its id. So the actor with id https://actor.example/path will be displayed as https://actor.example/path.

In addition to the example below, we wish to point out that further independence of webfinger will enable new features such as using domain names as handles.

Example: RSS

Consider building an application that posts new entries of an RSS feed to the Fediverse. Let's assume we are interested in the updates of the bovine python library available through RSS at https://pypi.org/rss/project/bovine/releases.xml. Then an uri for this actor might look like

https://rss.example/actor?feed=https%3A%2F%2Fpypi.org%2Frss%2Fproject%2Fbovine%2Freleases.xml

This would enable rss.example to automatically generate the respective actor and generate an actor object like

{
    "@context": "https://www.w3.org/ns/activitystreams",
    "id": "https://rss.example/actor?feed=https%3A%2F%2Fpypi.org%2Frss%2Fproject%2Fbovine%2Freleases.xml",
    "type": "Service",
    "inbox": "https://rss.example/inbox?feed=https%3A%2F%2Fpypi.org%2Frss%2Fproject%2Fbovine%2Freleases.xml",
    "outbox": "https://rss.example/outbox?feed=https%3A%2F%2Fpypi.org%2Frss%2Fproject%2Fbovine%2Freleases.xml",
    "followers": "https://rss.example/followers?feed=https%3A%2F%2Fpypi.org%2Frss%2Fproject%2Fbovine%2Freleases.xml",
    "name": "PyPI recent updates for bovine",
    "url": "https://pypi.org/project/bovine/",
    "summary": "Recent updates to the Python Package Index for bovine"
}

There is now no obvious choice for preferredUsername and thus acct-URI. If one wanted to create one, the best choice would probably be to hash the url of the feed. This unfortunately has the consequence of not generating a human readable id, but quite the opposite.

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