That is how some custom feeds work in BlueSky. And given the way custom feeds work there (they are services that ppl run afaik), the equivalent would be DVMs I believe (cc nostr:npub1wmr34t36fy03m8hvgl96zl3znndyzyaqhwmwdtshwmtkg03fetaqhjg240 )
Discussion
We’ve got custom feed support via DVM’s but they’re often not reponsive enough and we need better integration in to the apps, only a couple support the custom DVM feeds. They work so well for bluesky, and they work for nostr too, but we even have the abillity to have both paid and free custom feed algorithms.