/v1/apps/:id/...) and the per-user mount (/v1/users/:user_id/apps/:id/...). The :user_id may be default (your own project) or an end-user id (multi-tenant). On per-user mounts the kit must enable the database primitive.
Endpoints
SQL
501 feature_not_configured otherwise).
REST
/rest/v1/* with the service-role key (RLS bypassed). Uses the REST query syntax.
SDK
database sub-client.