Anyone doing any replies and bookmarks

I am trying to map out how I am going to add bookmark and replies to my site. I am thinking resuable snippets for each.

Basically my end goal would be a button or toggle to add a url, when the url gets dropped in, the title and url gets parsed.

In the page template the url (possibly shortened to root) would then be added to the header with either “u-in-reply-to” or “u-bookmark-of” depending on post type.

Actually I will make bookmark it’s own post type but the reply to url I think should be a snippet.

Anyone have any prior art? Doesn’t have to be for my exact use case. Just want to see examples of urls being added into panels to look for patterns.