With the Vision Pro making its debut, developers around the world are working hard to bring their apps for it to the market. It brings login and autofill functions to your device. You can simply download the app, log in with your Keeper master password, and you are set. This app lets you set default password autofill settings and use it instead of iCloud keychain.
Once you are connected, this app will simply fill your credentials while keeping your important accounts secure. You can find out more about it here.