Hey @Tom_Boscher!
You should be able to do this via a profile.
Save Connection Settings
You can save your frequently-used connection settings as profiles. Profiles store the project IDs, organization IDs, and, optionally, API keys to use in future Atlas CLI sessions. To save time, you can specify a profile instead of using the --projectId and --orgId flags with each command. The Atlas CLI stores your profiles in a configuration file called config.toml .