How to use rasa core seperately?

we have used pytext(pytorch-based) to train our model, and get rasa nlu json format(intent text entities). how can we use this json format with rasa core. we only want to use rasa core as dialogue management, police learning.

You have a Rasa Core Rest API with a bunch of endpoints. Like this you can use Rasa Core disconnected from Rasa NLU --> HTTP API

can i use rasa core cmdline without setting the nlu models path?