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`

10/2/2025, 5:15:47 AM

Quiet public

#link_dump https://socialhub.activitypub.rocks/t/guide-for-new-activitypub-implementers/479

Guide for new ActivityPub implementers

This is an informal guide to help new implementers get up to speed with the ActivityPub specification (published as a W3C Recommendation) and how to build projects with ActivityPub support. ℹ Note: This is a Wiki Post that anyone can edit. Please help improve and extend this document ! What is ActivityPub? ActivityPub is a family of protocols, data models, and architectures useful for building decentralized social media apps and services. The core ActivityPub (AP) s...

socialhub.activitypub.rocks · SocialHub