Creating an offline copy of my online password vault. Automatic syncing

Hi

I want to know if it’s possible to host my own password vault with automatic two way syncing. So that if I change a password on the local copy, it changes it oon the online copy. And if I change a password on the online copy, it changes it on the local copy.

So do you mean two vaults without a host server? If you mean hosting a local Bitwarden server that sync’s to your online (device?) copy, that’s how this system currently works.