AO3 update bot?

Hi! After using the bot Filmlinkd, which follows Letterboxd users and posts their film reviews as they come, I started wondering if something like this would be possible with AO3 uploads? You could do /follow (user) and whenever that user posted a new fic, it would update the same way Filmlinkd does!

If something like this already exists, please let me know, but I've only seen AO3 bots that post embedded info... so I was wondering if this type of bot is possible in the first place?