Attachments on Fediverse Developer Network

Create

The Create activity is used to create new objects on the server, most commonly a Note in order to create a new post.

Reference
Activity	Create
Object	Note
Official documentation	docs.joinmastodon.org

Visibility of a post

TODO: Go into detail with examples of how to set the visibility of a post. Public, unlisted, private, direct.

Create Note

Owncast sends out a note with an attachment to the inbox of each follower each time the stream goes live. Streamers can also compose and send out posts to their followers manually. It also utilizes private messages to an ActivityPub actor for use in authenticating to chat.

Reference
Activity	Create
Object	Note

Outbound

Outbound note objects from Owncast aim to be compatible with all microblogging style platforms.

Inbound

Inbound note objects received by Owncast are not handled and silently discarded.

Example automated “Go live” message

Example TODO

Example “FediAuth” message

Example TODO

Hashtag

Note (Status)

An ActivityPub Note object represents a single status post on Mastodon.

Reference
Object	Note
Official documentation	docs.joinmastodon.org

Common attachments

Hashtags (Hashtag)
Media attachments

Things to be aware of

Mastodon (as of last tested) requires tags (Hashtags objects) to be an array. While ActivityPub supports specifying a single object for a property, Mastodon will silently discard your post if you do not specify this property as an array.

A Note object can be included in the following ActivityPub activities: