A project member briefly mentioned in another post:
akc3n Ideally, Flarum would generate an Atom/RSS feed based on tags. Currently, obtaining Atom/RSS feeds from Flarum requires an extension, as the platform lacks native support for this feature. However, the existing extensions for RSS/Atom feeds do not seem to offer a robust solution that we would like to use.
https://discuss.grapheneos.org/d/10302-is-rss-coming/3