How do I keep a caught domain off the public Just Caught list?

By default a successful catch is published to the public Just Caught feed. If you would rather keep an acquisition quiet, you can choose to keep the catch private, so it shows only in your own records.

Set this preference for the catch rather than leaving it on the default. Private catches are still fully yours — you can still list them for sale later, transfer them out or add RDHE — they simply are not advertised on the live public feed. If you are acquiring names for a client or an undisclosed project, this is the setting to use.