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`

Evan Prodromou @evan@cosocial.ca

1/17/2026, 2:19:30 PM

Public

@maikelMaikel 🇪🇺 🇪🇸 @evanprodromou @cwebberChristine Lemmer-Webber

I also use the checkin app for testing:

https://github.com/social-web-foundation/checkin

It's an example Web client that I built for the Geosocial Task Force; it implements a barebones Foursquare-like checkin system.

GitHub - social-web-foundation/checkin: Example client for ActivityPub geosocial

Example client for ActivityPub geosocial. Contribute to social-web-foundation/checkin development by creating an account on GitHub.

github.com · GitHub

Evan Prodromou @evan@cosocial.ca

1/17/2026, 2:21:35 PM

Public

@maikelMaikel 🇪🇺 🇪🇸 @evanprodromou @cwebberChristine Lemmer-Webber

Finally, yes, making your code work with Mastodon is frustrating. Mastodon makes some big assumptions about actors on the network that aren't well published. I think if you start with the ActivityPub Webfinger and HTTP Signature reports you can get a lot of the gotchas covered:

https://swicg.github.io/activitypub-webfinger/

https://swicg.github.io/activitypub-http-signature/

ActivityPub and WebFinger

swicg.github.io

If you have a fediverse account, you can quote this note from your own instance. Search https://cosocial.ca/users/evan/statuses/115910881776983519 on your instance and quote it. (Note that quoting is not supported in Mastodon.)