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Onyx stores one or more Steam accounts so you can quickly switch between them when uploading builds. The account that is marked as active is passed directly to SteamCMD as the +login credentials during every upload. This guide explains how to add accounts, choose an active account, and remove accounts you no longer need.

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Opening the Users panel

Click the Manage Users button in the Onyx toolbar. The Users panel opens as a popup, listing all currently configured user cards.

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Adding a user

1

Enter credentials

Type your Steam username in the Username field and your password in the Password field at the top of the Users panel.
2

Choose whether to save credentials

Toggle the Save button to control persistence:
  • Save enabled — credentials are written to settings.cfg under the [users] section and will be available the next time you open Onyx.
  • Save disabled — the user card exists only for the current session and is not written to disk.
3

Click Add User

Click Add User. A new user card appears in the panel showing the username and a masked password.
When Save is enabled, your Steam password is stored in plaintext inside settings.cfg on your local machine. Anyone with access to that file can read it. Only use this option on a personal, trusted device. If you share your machine or store your project in a shared location, leave Save disabled and re-enter credentials each session.

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Understanding user cards

Each user card in the panel displays:
  • Username — your Steam account name.
  • Password — shown masked (e.g. ••••••••).
  • Select / Deselect — toggles whether this account is the active login.
Only one user card can be active at a time. The active user’s name appears in the main screen header so you always know which account Onyx will use for uploads.

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Selecting the active user

1

Find the card to activate

Locate the user card you want to use for uploads in the Users panel.
2

Click Select

Click the Select button on that card. The button label changes to Deselect to confirm it is now active.
3

Verify in main screen

Close the Users panel. The active username is shown in the main screen header. The Upload button will remain disabled until at least one app is also selected.
Clicking Select on one card automatically deselects any previously active card. There is no way to have two users active simultaneously.
To deactivate a user without selecting another, click Deselect on the currently active card. With no user selected, the Upload button is disabled.

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Removing a user

Click the Remove button on a user card to delete it. If the user was saved to settings.cfg, Onyx removes that entry from the config file at the same time. The card disappears from the panel immediately.
Removing a user card that is currently active will deactivate the login. You will need to select another user or add a new one before you can start an upload.

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Where credentials are stored

Saved credentials are written to settings.cfg in the same directory as the Onyx executable, under the [users] section. Each user occupies a keyed entry in that section. The file is plain text and can be opened in any text editor. To revoke saved credentials outside of Onyx, open settings.cfg and remove the corresponding user entry manually, then restart Onyx.