This action will delete this post on this instance and on all federated instances, and it cannot be undone. Are you certain you want to delete this post?
This action will delete this post on this instance and on all federated instances, and it cannot be undone. Are you certain you want to delete this post?
This action will block this actor and hide all of their past and future posts. Are you certain you want to block this actor?
This action will block this object. Are you certain you want to block this object?
Are you sure you want to delete the OAuth client [Client Name]? This action cannot be undone and will revoke all access tokens for this client.
Are you sure you want to revoke the OAuth token [Token ID]? This action cannot be undone and will immediately revoke access for this token.
#ActivityPub 94 hashtags


Servers
- Hubzilla v11.4.1
- Bookwyrm v0.9.3
- Cookifed v0.1.0
- Ktistec v3.12.1
- Misskey v2026.9.0
- gathio v1.6.7
- NeoDB v0.18.2
- Appy v0.7.0
- PieFed v1.7.15
- Wafrn v2026.09.01
Clients
- Voyager v2.49.0
- Miria v4.0.1
- Aria v1.5.13
Tools and Plugins
- Enable Mastodon Apps v1.6.4 (WordPress plugin)
Articles
- Static ActivityPub Publishing
-----
#WeekInFediverse #Fediverse #ActivityPub
Previous edition: https://mitra.social/objects/01a06eb0-8683-70d3-bb1d-19ef2967e02b

Release v3.12.1 patches a bug that's been present for about two years and fixes issue #163 in the process. Looking at FediDB, it appears most servers on v3.X.X made it through the upgrade to v3.5.0, which is where the bug would have bitten, but the consequences of the bug are annoying enough that a patch is warranted.
Changed
Up-to-date query statistics ensure that the expensive migration in v3.5.0 completes in seconds or minutes, instead of hours!

This release encompasses two broad sets of changes: widening the pool of candidates for feeds and more carefully checking the origin of inbound activities (broadly FEP-fe34, Origin-based security model).
Candidates for feeds were originally limited to posts in the actor's mailboxes. This decision made authorization easy but omitted clearly acceptable posts (for example, posts addressed to the public collection) that arrived via other means (for example, filling in a thread).
Prior to this release, inbox processing did not consistently define an object's origin nor did it apply consistent rules to what it admitted based on the origin.
FEP-fe34 is still not fully enforced, and truth be told, I'm still reviewing some of its mandates, so I'm not yet listing it in Ktistec's federation documentation.
Here's the full list of changes:
Added
Fixed
Create and Update to update objects.Changed
Removed
proxyUrl property from the actor document.I am still working hard on the feed deck. Both notifications and feed ordering now work. It's now my preferred reading interface, and should be ready by the next release!


Servers
- Akkoma v2026.08
- WriteFreely v0.17.2
- Wafrn v2026.08.03
- Mitra v5.9.0
- Ktistec v3.11.0
- Hollo v0.9.11
- Mastodon v4.6.6
- Forte v26.8.11
- gathio v1.6.4
- ActivityPub for WordPress v9.2.2
- NeoDB v0.17.6
- NodeBB v4.15.0
- Trunk & Tidbits, July 2026 (Mastodon)
Clients
- Aria v1.5.11
- Snowdrop: Multiplatform client for Mastodon API compatable Fediverse software
Tools and Plugins
For developers
- Fedipub v0.9.0
- Library progress report - August 2026 (GoActivityPub)
Protocol
- FEP-e4de: Closing Registration on Unattended Servers
- FEP-633c: Guardians
Articles
- Deploying your own Vernissage instance
-----
#WeekInFediverse #Fediverse #ActivityPub
Previous edition: https://mitra.social/objects/019fde3b-670e-7793-9180-6d8d0ddca40a

Despite the fact that a shared inbox is an optional actor endpoint, some servers assume Mastodon and deliver to /inbox instead of the actor's inbox. Okay, fine. This release of Ktistec includes support for shared inboxes.
🖐️🎤
Here's the full changelog:
Added
Fixed
closed namespace, and treat closed and endTime interchangeably.highlighted CSS class.Changed
My current passion project is the Ktistec feed deck—multiple, parallel panes in the same window, each displaying an algorithmic feed. It will be in usable shape in time for the next release.

The last two releases of Ktistec added backend and frontend support for algorithmic feeds. This release adds polish and links it into the navigation alongside posts, drafts, and bookmarks.
Algorithmic feeds are feeds that include (and exclude) posts with certain keywords, hashtags, and mentions. They are built on top of the materialized views that I introduced a few months ago. And they're fast!
The implementation will evolve toward something that looks like Mastodon's advanced web interface, Misskey antennas, or Friendica channels.
Here's the full changelog:
Added
Fixed
Changed
I'm currently deep in adding shared inbox support. A few servers insist on delivering to /inbox (whether or not Ktistec actors advertise a shared inbox).


Servers
- Mastodon v4.6.4
- yukimochi/Activity-Relay v2.0.11
- Iceshrimp.NET v2026.1.2-beta
- Mitra v5.8.0
- ActivityPub for WordPress v9.2.0
- Misskey v2026.7.0
- NeoDB v0.17.4
- NodeBB v4.14.5
- Announcing Bonfire for communities: groups and tools to organise together
- bandwagon.fm: July 2026
Clients
- Fedilab v3.43.0
- Pachli v3.8.0
- PleromaFE v2.11.2
- Aria v1.5.10
- Photon v2.4.3
- Rocinante v1.2.0
- FediSuite: Manage all your Fediverse accounts in one place
For developers
- Masto.js v8.0.0
- activitystreams-vocabulary: ActivityStreams 2.0 Vocabulary data structures (Rust)
Protocol
Articles
- Pelago: The Old Man, The Sea, and The Island
- Cooperative Software
- Cacheable Requests for Remote Content
- A newbie's guide to self-hosting: GoToSocial part 1 (installation and set-up)
-----
#WeekInFediverse #Fediverse #ActivityPub
Previous edition: https://mitra.social/objects/019f95f5-5736-7753-8aaa-83f9c26fa07e


Servers
- WriteFreely v0.17.0
- Ktistec v3.9.0
- Vernissage Server v1.41.0
- GoToSocial v0.22.1
- Bookwyrm v0.9.1
- PeerTube v8.2.3
- Lemmy v0.19.20
- ties v0.3
- ActivityPub for WordPress v9.1.0
- NeoDB v0.17.2
- NodeBB v4.14.2
- PieFed v1.7.7
- FitPub v1.2.1
- ActivityForge: ForgeFed implementation in Rust
Clients
- PleromaFE v2.11.1
- Aria v1.5.9
- Pixelix v5.0.0
- Summit v1.83.0
- Jerboa v0.0.88
- Holos v1.15.0
- Rocinante v1.1.8
Tools and Plugins
- Superblock v3.1 (Hubzilla addon)
- Polls for ActivityPub v1.0.10 (WordPress plugin)
Protocol
Articles
- I added ActivityPub to this blog
-----
#WeekInFediverse #Fediverse #ActivityPub
Previous edition: https://mitra.social/objects/019f71c0-52f2-7b60-a0f7-a9df07a6fd66

I shipped back-end support for algorithmic feeds in the last release. In this release I shipped front-end support. The feature needs testing and polish, so it's still not possible to navigate to the feeds editor, but if you know where to look, you can try it 😉.
"Algorithmic feeds" currently means support for custom hashtag, mention, and keyword feeds (e.g everything that mentions "#fediverse" and "#activitypub" but not "x" or "facebook").
Here's the full changelog:
Added
Fixed
Changed
!important.Removed
deliver_to state and the recipients fallback.In the next release, algorithmic feeds get wired into the navigation!


Servers
- Betula v1.8.1
- Stegodon v1.8.6
- Ktistec v3.8.0
- Mitra v5.7.0
- Ibis v0.3.3
- Gathio v1.6.3
- NodeBB v4.14.0
- Wanderer v0.20.0
- Wafrn v2026.07.01
- Gush! v0.0.40
- PieFed v1.7.5
- Harmony v1.4.0
Clients
- Mastodon for iOS v2026.05
- tooi v0.27.0
- Voyager v2.47.4
- Aria v1.5.7
- Holos v1.14.0
- Rocinante v1.1.0
- chan-fe: Imageboard-style frontend for Mitra and Mastodon-compatible fediverse APIs
Tools and Plugins
- tag-federation.online: How Widely Do Hashtags Federate?
- Fedigraph: A dashboard for exploring the fediverse
For developers
Protocol
- FEP-4772: Representing bookmarks
- FEP-521b: Switch the default in FEP-521a to be 76171% cooler
-----
#WeekInFediverse #Fediverse #ActivityPub
Previous edition: https://mitra.social/objects/019f29a4-78da-7a53-805d-72c8e43916c2