morph on Nostr: For Mastodon feeds there's also the option to subscribe to hashtags. by user ...

For Mastodon feeds there's also the option to subscribe to hashtags.

by user
https://instance.tld/@user/tagged/hashtag.rss

the pure hashtag as far as known by the instance's relayed connections.
https://instance.tld/tags/hashtag.rss

The # not included.