Latest ActivityPub topics

Topic	Replies	Views	Activity
Service Capability Discovery Server to Server interop , server	9	821	January 12, 2026
Pre-FEP: Evolving OrderedCollection to be more useful ActivityPub	1	108	December 31, 2025
Webfinger for non-actor objects and storing foreign objects Server to Server server	3	46	December 17, 2025
FEP-1580: Move Actor Objects with a `migration` Collection ActivityPub fep	22	363	November 18, 2025
FEP-d8c8: BitTorrent `Torrent` objects ActivityPub fep	11	218	November 9, 2025
FEP-19b3: Specifying Properties of a Service ActivityPub	0	26	November 4, 2025
Generate sharelinks ActivityPub	1	31	November 3, 2025
Pre-FEP: Reassigning Actor and CoAuthor Representation for Federated CMS ActivityPub draft	4	71	November 3, 2025
Quote Post Implementation Issues ActivityPub	2	133	September 29, 2025
Why does Mastodon.social send messages not addressed to me to my server? Server to Server	1	65	September 22, 2025
Fediverse, ActivityPub and the Ethics ActivityPub	5	115	September 18, 2025
Can we add a generated JSON list of FEPs to the repo? ActivityPub fep	16	133	August 28, 2025
Fediverse Relays ActivityPub	52	1306	August 26, 2025
How and when to update Actor objects? Server to Server	2	45	August 23, 2025
Potential security vulnerability: Remote JSON-LD contexts may be used to bypass restrictions when arbitrary objects are allowed to be created ActivityPub	22	344	August 21, 2025
Agenda Prep for August 2025 ForumWG Meeting Threadiverse Working Group	5	46	August 14, 2025
Would there be any interest in a "pre-authorized fetch" FEP? ActivityPub	2	134	August 14, 2025
FEP-c313: Replies Addressed to Original Author’s Followers ActivityPub	21	114	August 12, 2025
Notes no longer delivered on Mastodon Server to Server	3	58	July 30, 2025
Liberating clients from servers, without throwing out baby with bathwater Client to Server	24	301	July 23, 2025
ActivityPub Client API: A Way Forward Client to Server	1	107	July 6, 2025
ForumWG cancelled this month (July) Threadiverse Working Group	0	15	July 3, 2025
ATProto gets PDS ActivityPub support ActivityPub fediverse	8	263	July 1, 2025
Help debugging why mastodon isn't finding an actor Testing	16	275	June 22, 2025
Threaded Conversations with Posts from Other Protocols, SSO Posting, and Unauthenticated Sources Server to Server	0	40	June 7, 2025
ForumWG canceled this month (June) Threadiverse Working Group	0	17	June 3, 2025
Changeable usernames? Server to Server	63	6166	June 3, 2025
Wiki: Collected feedback on interop testing, methods, living docs and specs Testing testing , wiki :point_right: This is a wiki post and anyone is encouraged to Edit and add additional sources. ActivityPub Test Suite Needs “Status of a robust ActivityPub test suite?” on SocialHub by Tim Chambers (@tchambers). …	0	3342	September 1, 2023
Who should I send Delete activities to? Server to Server	15	142	May 24, 2025
Addressing confusion between `Create` and contained object Server to Server	10	81	May 24, 2025

Service Capability Discovery

Server to Server

interop , server

9

821

January 12, 2026

Pre-FEP: Evolving OrderedCollection to be more useful

ActivityPub

1

108

December 31, 2025

Webfinger for non-actor objects and storing foreign objects

Server to Server

server

3

46

December 17, 2025

FEP-1580: Move Actor Objects with a `migration` Collection

ActivityPub

fep

22

363

November 18, 2025

FEP-d8c8: BitTorrent `Torrent` objects

ActivityPub

fep

11

218

November 9, 2025

FEP-19b3: Specifying Properties of a Service

ActivityPub

0

26

November 4, 2025

Generate sharelinks

ActivityPub

1

31

November 3, 2025

Pre-FEP: Reassigning Actor and CoAuthor Representation for Federated CMS

ActivityPub

draft

4

71

November 3, 2025

Quote Post Implementation Issues

ActivityPub

2

133

September 29, 2025

Why does Mastodon.social send messages not addressed to me to my server?

Server to Server

1

65

September 22, 2025

Fediverse, ActivityPub and the Ethics

ActivityPub

5

115

September 18, 2025

Can we add a generated JSON list of FEPs to the repo?

ActivityPub

fep

16

133

August 28, 2025

Fediverse Relays

ActivityPub

52

1306

August 26, 2025

How and when to update Actor objects?

Server to Server

2

45

August 23, 2025

Potential security vulnerability: Remote JSON-LD contexts may be used to bypass restrictions when arbitrary objects are allowed to be created

ActivityPub

22

344

August 21, 2025

Agenda Prep for August 2025 ForumWG Meeting

Threadiverse Working Group

5

46

August 14, 2025

Would there be any interest in a "pre-authorized fetch" FEP?

ActivityPub

2

134

August 14, 2025

FEP-c313: Replies Addressed to Original Author’s Followers

ActivityPub

21

114

August 12, 2025

Notes no longer delivered on Mastodon

Server to Server

3

58

July 30, 2025

Liberating clients from servers, without throwing out baby with bathwater

Client to Server

24

301

July 23, 2025

ActivityPub Client API: A Way Forward

Client to Server

1

107

July 6, 2025

ForumWG cancelled this month (July)

Threadiverse Working Group

0

15

July 3, 2025

ATProto gets PDS ActivityPub support

ActivityPub

fediverse

8

263

July 1, 2025

Help debugging why mastodon isn't finding an actor

Testing

16

275

June 22, 2025

Threaded Conversations with Posts from Other Protocols, SSO Posting, and Unauthenticated Sources

Server to Server

0

40

June 7, 2025

ForumWG canceled this month (June)

Threadiverse Working Group

0

17

June 3, 2025

Changeable usernames?

Server to Server

63

6166

June 3, 2025

Wiki: Collected feedback on interop testing, methods, living docs and specs

Testing

testing , wiki

:point_right: This is a wiki post and anyone is encouraged to Edit and add additional sources. ActivityPub Test Suite Needs “Status of a robust ActivityPub test suite?” on SocialHub by Tim Chambers (@tchambers). …

0

3342

September 1, 2023

Who should I send Delete activities to?

Server to Server

15

142

May 24, 2025

Addressing confusion between `Create` and contained object

Server to Server

10

81

May 24, 2025