*`enabled` (Pleroma extension) enables the endpoint
*`ip_whitelist` (Pleroma extension) could be used to restrict access only to specified IPs
*`auth` sets the authentication (`false` for no auth; configurable to HTTP Basic Auth, see [prometheus-plugs](https://github.com/deadtrickster/prometheus-plugs#exporting) documentation)
*`format` sets the output format (`:text` or `:protobuf`)