Is it possible to create JSM request via REST API without preexisting account authorization

We are in the process of integrating a customer bugreporter into our game. We have set up a JSM project that allows customers without an account to create bugreports by only supplying an email address.
Is it possible to allow this quasi-anonymous bug creation via REST API aswell? So far we have been unable to successfully send a POST request without at least basic API-token authentication, which obviously does require a preexisting account and token creation.

At this point I’m fairly certain this is not supported by design, but I’m happy to be proven otherwise. If anyone has other suggestions on how we could handle this bugreporting process with minimal customer effort, I’d be happy to hear it aswell, thank you!

(Our plan B would be to open a browser to the JSM portal with pre-populating values via URL parameters)