By "same mechanism", I was referring to DVMs (Data Vending Machines) as a method to deliver custom nostr feeds.

Have you considered coracle's custom feeds? It allows for incorporating dvms without relying entirely on them. Feeds can also be saved, shared, and bookmarked, creating a marketplace of feeds. https://wikifreedia.xyz/cip-01/hodlbod@coracle.social

There's also a js implementation in welshman