So I know very little about this library, but if it uses macros to define its vars, kondo won't pick them up by default. You have to specify in your kondo config how it should treat those macros. For simpler def-style macros this is easy, but for some others it can be a big challenge.

We also have a library here for generating stubs: https://github.com/clj-easy/stub

You can also just disable unresolved-var for some namespaces