Rasa Chat widget using FastAPI

Hi has anyone used Rasa chat widget (official) via FastAPI server to interact with user, and to show an initial message? Any tips are appreciated thanks

I’ve not used the official widget, but I have a demo of a custom widget that uses chrome’s voice apis. The demo is listed on our Rasa blog here: webkitSpeechRecognition and Rasa | The Rasa Blog | Rasa

@koaning I appreciate your fast response, I had checked your blog also; but in this case I want to use the official widget (or another one for text-based interaction without voice and microphone); I dont know how to get the user input message, convert to JSON, Post to Rasa, and then render Rasa reply in the web application using FastAPI. Can you give a hand? thanks a lot