Connecting Postgresql DB via GUI Tools

How do you connect a PostgreSQL target via a GUI tool. Ex - pgadmin.

You download any Boundary client (for example Install Boundary Desktop | Boundary | HashiCorp Developer), connect to the PostgreSQL database through Boundary client, and feed the proxy URL to pgadmin.

On client versions > v0.13.x, the proxy URL can have a fixed client port for each target.

Can we accomplish this using servers, or is it limited to local machines?