If you have Admin credentials, you can make changes to API Keys through the namespace Settings menu. You can remove all access to a game by revoking its API Key. Doing this will create a new API Key and you will no longer be able to access the game using the previous API Key.
Follow the steps below to revoke the API Key for a game:
Login to BlackBox.
Select the namespace from the game drop down.
Go to the Games page
Find the game you want to revoke the key for in the list.
Click Revoke next to the key for that game.
A pop-up window appears
Click Revoke to confirm that you want to revoke the API Key.
Once you click Revoke, the API Key is revoked and can no longer be used for SDK or CLI.