Factorio admins are set in server-settings.json. Add the exact Factorio username for each player you want to make admin.
Adding an admin
- Open your Factorio server in the control panel.
- Stop the server, then take a backup.
- Click Configuration Files.

- Edit server-settings.json.
- Find the admins section and add the usernames you want to make admin:
"admins": [ "PlayerName", "SecondPlayer" ]
- Make sure the JSON formatting stays valid. Each username except the last one needs a comma after it.
- Save the file, then start the server again.
If allow_commands is set to admins-only, only admins can use server commands.
