I asked a similar question a while back and it's apparently not supported by 1Password out of the box.
My solution for this is to run op over ssh to the host where I'm logged in locally running the 1Password desktop. See here for details.
Depending on your needs, if you're not able to ssh back to your desktop host from the remote server, you may be able to setup a reverse tunnel via ssh port forwarding, then ssh back to your host using the tunnel.
I'm still curious if there's a better way to do this. Ideally, proxying 1Password CLI over SSH should work similarly as ssh agent forwarding, which is what I tried to emulate with my solution.
