akkoma/FEDERATION.md
Oneric 05eda169fe Document AP and nodeinfo extensions
And while add it point to this via a top-level
FEDERATION.md document as standardised by FEP-67ff.

Also add a few missing descriptions to the config cheatsheet
and move the recently removed C2S extension into an appropiate
subsection.
2024-05-26 19:04:06 +02:00

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# Federation
## Supported federation protocols and standards
- [ActivityPub](https://www.w3.org/TR/activitypub/) (Server-to-Server)
- [WebFinger](https://webfinger.net/)
- [Http Signatures](https://datatracker.ietf.org/doc/html/draft-cavage-http-signatures)
- [NodeInfo](https://nodeinfo.diaspora.software/)
## Supported FEPs
- [FEP-67ff: FEDERATION](https://codeberg.org/fediverse/fep/src/branch/main/fep/67ff/fep-67ff.md)
- [FEP-f1d5: NodeInfo in Fediverse Software](https://codeberg.org/fediverse/fep/src/branch/main/fep/f1d5/fep-f1d5.md)
- [FEP-fffd: Proxy Objects](https://codeberg.org/fediverse/fep/src/branch/main/fep/fffd/fep-fffd.md)
## ActivityPub
Akkoma mostly follows the server-to-server parts of the ActivityPub standard,
but implements quirks for Mastodon compatibility as well as Mastodon-specific
and custom extensions.
See our documentation and Mastodons federation information
linked further below for details on these quirks and extensions.
Akkoma does not perform JSON-LD processing.
### Required extensions
#### HTTP Signatures
All AP S2S POST requests to Akkoma instances MUST be signed.
Depending on instance configuration the same may be true for GET requests.
## Nodeinfo
Akkoma provides many additional entries in its nodeinfo response,
see the documentation linked below for details.
## Additional documentation
- [Akkomas ActivityPub extensions](https://docs.akkoma.dev/develop/development/ap_extensions/)
- [Akkomas nodeinfo extensions](https://docs.akkoma.dev/develop/development/nodeinfo_extensions/)
- [Mastodons federation requirements](https://github.com/mastodon/mastodon/blob/main/FEDERATION.md)