Yes and (unfortunately) no. Terraform providers are here [1] with the official documentation at [2]. Managed databases are not available, though. I think they have some sort of database offering if you select their web hosting options, but you can't just get a managed Postgres instance yourself.

[1] https://registry.terraform.io/providers/hetznercloud/hcloud/... [2] https://community.hetzner.com/tutorials/howto-hcloud-terrafo...

EDIT: For what it's worth, I have had good experiences with app servers hosted on Hetzner Cloud and managed Postgres provided by ElephantSQL (https://www.elephantsql.com/) for Germany-based apps.