This project consumes github's api, reads the repositories that the user has marked with star and from them identifies the languages of interest
This is a project made by vinicius reis for the codecast study platform
It was originally built to be consumed via the terminal (you can check the original project on codecasts github page), this fork turned it into an api that can be consumed by this url (just change the params to your username to see your stats):
https://immense-plateau-38185.herokuapp.com/api?username=yesroh