NostRSS: does it exist yet?

I'd like to follow long form notes in my RSS reader, but I won't get to it during regular catchup of my feed.

The basic workflow would be to go to a website (self hosted or otherwise), paste in an npub and then get a RSS/Atom feed URL back.

The feed should only contain long form content (though the RSS feel URL could have params in it to select the kinds of events you want it to give you).

The urn:uuid of the feed should be deterministically derived from the npub, and the urn:uuid for each entry from the nevent id, so that I can switch over to another RSS feed provider without losing my (un)read marks.