This API provides cat facts that are currated from all over the internet. It looks like there are only 2 endpoints. One to get user information, but it requires authorization, and an endpoint to get the cat facts. Simple and fun.
This API gives you attractive color palletes for design projects. You can enter colors as parameters and the API will return a list of 5 colors, including the ones you gave it that look well together. This can be helpful if you need to make projects really come together asthetically.
This API allows you to access statistics about Formula 1 racing from 1950 through the present. I have used this API to gather some data about drivers and tracks and the documentation is well-written and easy to use. The endpoints allow you to obtain data in an efficient fashion. Unfortunatley this API will no longer be updated after the end of 2024 :(.