What and programming language are you planning to use? What model of HIKMICRO camera are you integrating? What is the primary goal of your custom application?
The SDK is platform-dependent.
Mastering Thermal Imaging Integration: The Ultimate Guide to the Hikmicro SDK
If you need raw temperature data at scale, the Hikmicro SDK is arguably the best in the market outside of military-grade hardware. Download the latest SDK from the official partner site, start with the Sample_CPP project, and you will have a thermal data stream running in your enterprise application within an afternoon.