https://www.w3.org/TR/activitystreams-core/
Types:
From https://www.w3.org/TR/activitystreams-vocabulary/#types
- Object
- Link
- Activity
- IntransitiveActivity
- Collection
- OrderedCollection
- CollectionPage
- OrderedCollectionPage
- Accept
- Add
- Announce
- Arrive
- Block
- Create
- Delete
- Dislike
- Flag
- Follow
- Ignore
- Invite
- Join
- Leave
- Like
- Listen
- Move
- Offer
- Question
- Reject
- Read
- Remove
- TentativeReject
- TentativeAccept
- Travel
- Undo
- Update
- View
- Application
- Group
- Organization
- Person
- Service
- Article
- Audio
- Document
- Event
- Image
- Note
- Page
- Place
- Profile
- Relationship
- Tombstone
- Video
Link type includes Mention
- Mention