Join free. Then open the app and paste YOUR xAI API key under Keys. You cannot lock a product, generate buyers, draft emails, or run chat/voice closer until that key is on your workspace. Sitewide keys do not count. After your key is saved: lock your own product, dry-run the floor, open closer consent. Live send stays locked. ESP/mailbox is not required to test. Come back here and tell us what broke or felt unclear.