activitypub

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19.03.2026 18:05
fedizen (@fedizen@mastodon.social)

»Label yourself« signal.org/blog/group-member-l




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19.03.2026 17:20
post (@post@community.nodebb.org)

NodeBB v4.10.0 — Alt text, more /world, bugfixes

Hi everybody,

With spring around the corner (it is currently a balmy 5°C here right now), it's time to get crackin' on a new release of NodeBB!

We focused on a lot of user experience updates this time around, along with tweaking the new /world page that was introduced in v4.9.0. In the backend, lots of optimizations were implemented, which make federation processing (and day-to-day maintenance) faster.

Here's what you can expect from v4.10.0...[...]

community.nodebb.org/post/1068




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19.03.2026 15:58
admin (@admin@mastodon.raddemo.host)

🚀 How to Deploy #Funkwhale on #Debian #VPS

This article provides a guide demonstrating how to deploy Funkwhale on Debian VPS.
What is Funkwhale?
Funkwhale is a self-hosted, federated audio platform for streaming and sharing music & podcasts. It uses #ActivityPub so libraries can follow/feature content across instances (like Mastodon), and it offers a web UI plus ...
Continued 👉 blog.radwebhosting.com/deploy- #selfhosted #letsencrypt #redis #python #opensource #certbot #selfhosting #postgresql





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19.03.2026 15:31
vedfolnir (@vedfolnir@mastodon.social)

La IA multilingüe amplía el impacto de la accesibilidad en cinco idiomas. Los hablantes de inglés, alemán, japonés, francés y español pueden todos interactuar con mi contenido inclusivo. (Traducido por IA)
vedfolnir.org





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19.03.2026 14:13
w3cdevs (@w3cdevs@w3c.social)

📢 The @w3c Breakouts Day 2026 agenda is available!
➡️ w3.org/calendar/breakouts-day-

Two dates: 🗓️ 25 March from 13:00-15:00 UTC and 🗓️ 26 March from 21:00-23:00 UTC

We invite the web community to take part in these one-hour sessions and give input on diverse topics such as #ActivityPub, #AI, cognitive #a11y, #privacy, policy engagement, #sustainability and more!

Anyone with a W3C account (including non-Members) can participate. No fee or registration is required.





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19.03.2026 12:49
pfefferle (@pfefferle@mastodon.social)

I sat down with @snarfed.org to talk about his work around the , the and the including (fed.)brid.gy and @anewsocial

openchannels.fm/connecting-dec




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19.03.2026 11:39
reiver (@reiver@mastodon.social)

5/

Continuing to look for an alternative to "attachment" (for properly supporting an Actor specifying a list of Service actors associated with it) —

Maybe a call specific custom top-level attribute would be useful.

Maybe something like:

"call": [
{
"rel":"callpub",
"href":"https://videocalls.example/users/joeblow"
}
]

Or even:

"call": [
"href":"https://videocalls.example/users/joeblow"
]

.




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19.03.2026 11:38
atlza (@atlza@mamot.fr)

Petite question pour les devs qui manipulent #activitypub ou les admins de serveurs #mastodon

j'ai une instance activitypub d'un nouveau service, dans un premier déploiement les urls d'inbox/outbox de mon user dans le webfinger étaient erronées.

Soucis: ces urls sont mises en cache (ou gardées en base) ce qui fait qu'il devient impossible de s'abonner aux publications d'lutilisateur même après correction

Question: au bout de combien temps le serveur oublie t'il ces infos ?

Merci à vous :)




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19.03.2026 11:38
reiver (@reiver@mastodon.social)

6/

Continuing to look for an alternative to "attachment" (for properly supporting an Actor specifying a list of Service actors associated with it) —

Maybe a custom top-level attribute would be useful.

Maybe something like:

"service": [
{
"rel":"callpub",
"href":"https://videocalls.example/users/joeblow"
}
]

Although perhaps that is not much better than "attachment", if you just care about calls

So —




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19.03.2026 11:28
reiver (@reiver@mastodon.social)

4/

Looking for an alternative to "attachment" (for properly supporting an Actor specifying a list of Service actors associated with it) —

I think using "alsoKnownAs" and "sameAs" would be a poor choice. And, the semantics are wrong.

For example: a Service actor might represent my mobile phone (or software on it). My phone is not me. It is something I have.

So —




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19.03.2026 11:25
reiver (@reiver@mastodon.social)

3/

But, what about the non- fall-back situation where software could properly support this (when an Actor specifies a list of Service actors associated with it)‽

I think some might say, put the associated Service actors in "attachment". And, semantically I think that would work with ActivityPub, but — I have a very strong dislike with putting everything in "attachment" (and "tag"). It makes parsing difficult.

So —




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19.03.2026 11:18
reiver (@reiver@mastodon.social)

1/

AFAIK, there isn't a way for an ActivityPub Actor (such as a Person actor) to specify a list of Service actors associated with it.

...

For example, imagine that there is a Service actor that represents a way to make a video call to me.

And, for example, I have my Mastodon Person actor.

And, I want to let people know about it (and other Service actors associated with me).

How do I do that using AP, etc?

...




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