Use 203 Non-Authoritative Information

> This response code means the returned metadata is not exactly the same
> as is available from the origin server, but is collected from a local
> or a third-party copy. This is mostly used for mirrors or backups of
> another resource. Except for that specific case, the 200 OK response
> is preferred to this status.

roles/docker/files/configs/mastodon/vhost-mastodon

@@ -1,5 +1,5 @@
 listen 3000;
 client_max_body_size 50M; # default is 1M
 if ($http_user_agent = "Datadog/Synthetics") {
-  return 200;
+  return 203;
 }