FEDERATION.md

Federation

Supported federation protocols and standards

• ActivityPub (S2S)
• WebFinger
• HTTP Message Signatures (RFC 9421)
• HTTP Signatures (draft-cavage-http-signatures-12)
• Linked Data Signatures
• NodeInfo

Supported FEPs

• FEP-67ff: FEDERATION.md
• FEP-8fcf: Followers collection synchronization across servers
• FEP-9091: Export Actor service
• FEP-f1d5: NodeInfo in Fediverse Software
• FEP-8b32: Object Integrity Proofs
• FEP-521a: Representing actor's public keys
• FEP-5feb: Search indexing consent for actors
• FEP-fe34: Origin-based security model
• FEP-c0e0: Emoji reactions
• FEP-e232: Object Links

ActivityPub

Since Fedify is a framework, what activity types it uses is up to the application developers. However, Fedify provides a comprehensive set of ActivityPub vocabulary types that are commonly used in the fediverse.

Activity types

• Accept
• Add
• Announce
• Arrive
• Block
• ChatMessage
• Create
• Delete
• Dislike
• EmojiReact
• Flag
• Follow
• Ignore
• Invite
• Join
• Leave
• Like
• Listen
• Move
• Offer
• Question
• Read
• Reject
• Remove
• TentativeAccept
• TentativeReject
• Travel
• Undo
• Update
• View

Actor types

• Application
• Group
• Organization
• Person
• Service

Object types

• Article
• Audio
• Document
• Event
• Image
• Note
• Page
• Place
• Profile
• Tombstone
• Video

Collection types

• Collection
• CollectionPage
• OrderedCollection
• OrderedCollectionPage

Link types

• Link
• Mention

Extended types

• Emoji (Mastodon extension)
• Hashtag
• PropertyValue (Schema.org)
• Relationship

Cryptographic types

• Key
• Multikey
• DataIntegrityProof

Service types

• DidService
• Endpoints