Following this post by @Gepardi55 where they mention building an app for their Ford EVbased off a pypi package, I thought to check if there were any similar packages for Toyota.
Lo and behold there is!
Pytoyoda lets you use your MyToyota (which incidentally does work in AppSupport) credentials to access the service. The simple client provided doesn’t yet have the full capability of the app, but you can retrieve the status of the vehicle (with accuracy at 3dp rather than 1dp in the app), and it will perform some calculations on new and existing data.
e: pytoyoda only supports the European service, there is toyota-na for NA