A proxy for creating Crunchyroll sessions a la CR-Unblocker.
If you don't feel safe sending your login credentials through some unknown entity you can deploy it yourself on Vercel:
Functions exactly like https://api.crunchyroll.com/start_session.0.json.
If you want to use this service like a drop-in replacement for the start_session action.
Passes any query parameters to the real endpoint, returns the response.