Hi Matt, we have a good deal experience with traffic API's (Alexa, Semrush and otehrs) in booth visualizing the traffic and making graphs. One of the websites we made have received wide media coverage (I'll send a link in a personal message). I used to spend weeks analyzing traffic and making apps based on data provided by various API's. It's a lot of fun! I'd love to hear more about this project, so I'll send you a message soon.