@Iain sorry if i'm asking too much, but

[astral quiver]

A server can authenticate by either being hosted on a Multiplay server (https://docs.unity.com/ugs/manual/game-server-hosting/manual/welcome) or by using a service account.

The access token obtained from either of those operations can be used with cloud save or economy to perform operations as a server.

The Unity SDKs for those features do not support that so you need to do your web requests manually for these at the moment.

[loud moon]

thanks, so if i modified players cloud save data via the REST API, and this call was from from a Multiplay Server it will be automatically authenticated and approved ?

[astral quiver]

You need to include the access token in the REST API request to cloud-save and economy.

You can obtain the access token by using the ServerAuthenticationService. This is only available if you using the Unity Server build target and are using authentication v3.0.0+

You should have access to ServerAuthenticationService.Instance.SignInWithServiceAccountAsync & ServerAuthenticationService.Instance.SignInFromServerAsync.

SignInFromServerAsync can be used from a Multiplay Server.

[loud moon]

i'm using Authentication v3.1.0
butServerAuthenticationService doesn't exist.

are you sure it's the right name ?

switched the build to Dedicated Server (Linux) and it's still not available

[astral quiver]

Are you on the server build target?

namespace: using Unity.Services.Authentication.Server;

[loud moon]

yes

brother, this thing doesn't exist.

[astral quiver]

Do you see this in your packages in your unity project explorer?

That assembly is enabled when either UNITY_SERVER or ENABLE_UCS_SERVER is set.

I'm not sure why it's not enabled for you.

You could try adding ENABLE_UCS_SERVER in your project scripting define symbols

[loud moon]

i did it in a different way AND IT FINALLY WORKED, now i know how i can use REST API or whatever it's called

thanks for trying to help tho @astral quiver, you're a nice guy

i used this script (by Code Monkey) to make it easier when i make a WebRequest