Surprisingly a C++ example is not straightforward in that case (but that’s a problem on our side, there should be an example) Read the readme here for a Python example https://github.com/osquery/osquery-python

Thanks for the information. Any plans of coming up with C++ example in near future?

Does the host running OSQuery needs to have Python installed for using Python extensions or how does it work?

Yes it does, an extension runs as a normal process but will open a socket/pipe and start making API calls to the main osquery process.