Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Darius Kazemi @darius@friend.camp

11/19/2025, 6:26:38 PM

Public

Doing some dev work on Hometown and thought "Oh crap, I need to test in a local environment how Articles will render in timelines. But I'm not running anything locally that sends Articles."

Then I remembered, oh right, I literally released a tool for this last month! ActivityPub Fuzzer to the rescue.

https://asml.cyber.harvard.edu/2025/10/01/introducing-the-asml-activitypub-fuzzer-improving-testing-in-the-fediverse/

Screenshot of the ActivityPub Fuzzer. It has options to set a target inbox, send random schemas, emulate a Fediverse firehose, select specific schemas, and to post schemas to an inbox.

At the bottom of the screenshot a schema titled "Ghost Article with summary" is selected under "POST to inbox"

A Hometown timeline with a few test messages in it from a user called "Fuzzer". You can see the top message is an "example Ghost Article with summary (object.name)" and a "read article" expansion box beneath it.

Darius Kazemi @darius@friend.camp

12/4/2025, 7:53:34 PM

Public

Just added easy-to-read logs to the ActivityPub Fuzzer! Here's a log of the fuzzer pretending to be Bookwyrm, along with an example of what the Create(Note) and the Article review look like in Hometown.

Note the "read article" link, which is a Hometown feature to be compatible with AP implementations that emit Article objects. You can also see at a glance that the "summary" field that Hometown is rendering here is actually coming from "object.name" (because "summary" is used for CWs lol)

A simple "log" page with a "Clear Log" and "Mark All as Read" button. Underneath those buttons are UI cards, each formatted like:

title: Bookwyrm basic Article book review
Software: Bookwyrm
Time: now
Content preview: [a longish excerpt from Moby-Dick with header html embedded]

And "inspect" and "FSO" links, the former showing you the generated activitypub JSON blob, the latter taking you to the page on the Fediverse Schema Observatory for that particular schema.

A Mastodon-looking timeline with a note with a cat picture, followed by a shorter post with

Summary: "example bookwyrm basic Article book review (object.name)"

And then a "read article >" link

If you have a fediverse account, you can quote this note from your own instance. Search https://friend.camp/users/darius/statuses/115663045542684230 on your instance and quote it. (Note that quoting is not supported in Mastodon.)