What sort of API? I’m working on another real estate project and were focusing on generic listings APIs. Would love to know your use case.

My research is in urban planning so I mostly use city/state/federal data and occasionally data from court cases.

Most of that data is sparsely updated and I'm not clued in on many real estate APIs to track up-to-date trends in housing and prices so I would love to know more about what your work looks like!