Merge branch 'develop' into 'feature/autofollowing'

# Conflicts:
#   CHANGELOG.md

1 files changed, 32 insertions, 2 deletions

diff --git a/docs/ap_extensions.md b/docs/ap_extensions.md
index c4550a1ac..3d1caeb3e 100644
--- a/docs/ap_extensions.md
+++ b/docs/ap_extensions.md
@@ -1,11 +1,41 @@
-# ChatMessages
+# AP Extensions
+## Actor endpoints
 
-ChatMessages are the messages sent in 1-on-1 chats. They are similar to
+The following endpoints are additionally present into our actors.
+
+- `oauthRegistrationEndpoint` (`http://litepub.social/ns#oauthRegistrationEndpoint`)
+- `uploadMedia` (`https://www.w3.org/ns/activitystreams#uploadMedia`)
+
+### oauthRegistrationEndpoint
+
+Points to MastodonAPI `/api/v1/apps` for now.
+
+See <https://docs.joinmastodon.org/methods/apps/>
+
+### uploadMedia
+
+Inspired by <https://www.w3.org/wiki/SocialCG/ActivityPub/MediaUpload>, it is part of the ActivityStreams namespace because it used to be part of the ActivityPub specification and got removed from it.
+
+Content-Type: multipart/form-data
+
+Parameters:
+- (required) `file`: The file being uploaded
+- (optionnal) `description`: A plain-text description of the media, for accessibility purposes.
+
+Response: HTTP 201 Created with the object into the body, no `Location` header provided as it doesn't have an `id`
+
+The object given in the reponse should then be inserted into an Object's `attachment` field.
+
+## ChatMessages
+
+`ChatMessage`s are the messages sent in 1-on-1 chats. They are similar to
 `Note`s, but the addresing is done by having a single AP actor in the `to`
 field. Addressing multiple actors is not allowed. These messages are always
 private, there is no public version of them. They are created with a `Create`
 activity.
 
+They are part of the `litepub` namespace as `http://litepub.social/ns#ChatMessage`.
+
 Example:
 
 ```json