Mriya validates all required fields at startup. If a required field is missing, the error message includes guidance on how to provide the value:
missing Scaleway API secret key: set SCW_SECRET_KEY or add secret_key to [scaleway] in mriya.toml
Required fields for Scaleway credentials: secret_key, default_project_id,
default_image, default_instance_type, default_zone,
default_architecture.
Required sync settings: ssh_identity_file.