National University of Singapore (NUS) has an API for querying courses information

This API is created by nushackers, and provides querying of courses information such as the module description, timetable and pre-requisites.

I was a graduate from NUS, so I could see that an API would be very useful when it comes to a new semester where students spend a huge amount of time searching and bidding for their modules.

It is also enlightening to learn that the project is built using Python, Flask and Scrapy.