is its possible to make the user input goes to custom actions without any intent? my goal was to read fist the messages inside the custom actions then use dispatcher from the custom
The question is not very clear. What do you want to achieve here ?
It seems you don’t want to apply any NLP on the user utterence and so some processing instead.
Why do you need custom action or rasa for that, you can do that externally to rasa and only send the message to rasa when you want to apply the NLP