A while back I saw a tweet where a mac user was able to open a remote terminal from a ssh:// url field in 1Password. I tried to replicate this on Linux and even created a simple .desktop handler for it which works when launched from any other application. However, clicking on "Open network location" tries to open it in the dolphin file manager instead.
ssh-proto.desktop file in case you're interested:
[Desktop Entry] Type=Application Name=SSH Proto Exec=konsole -e ssh %u StartupNotify=false MimeType=x-scheme-handler/ssh;
And I set it as the default handler by running
xdg-mime default ssh-proto.desktop x-scheme-handler/ssh
1Password Version: 8.8.0-143
Extension Version: Not Provided
OS Version: Linux 5.18.5-arch1-1