I am trying to build traewelling-tagtistic.
Träwelling is a Social-Platform, where you “Check-In” to public transit services.
You can also set Tags to, for example, show what Train Model you are currently riding.
traewelling-tagtistic is going to be a Website, where you can see various Statistics about these Tags.

For now however, I get a 400 Bad Request from the Träwelling API if I use Python requests. However, it works from Firefox… 🤔