This is a Python wrapper around the API used by We Connect ID, used in Volkwagen's ID.4 cars.
Look in example.py or example-with-cache.py to see how wci.py is used. The latter shows how you can use the API without explicitly signing in every single time, by saving a previous session in a text/cache file.
To run the examples, copy credentials.example.py to a new file called credentials.py and fill in the credentials that you use when signing in to the app.
There is unfortunately no reference of the endpoints and/or HTTP methods, but what's provided in the examples should help you to at least retrieve some data from your Volkswagen ID.4 car.