@redstone #UnifiedPush specifies how a client application and application server communicate to find, register and communicate with a 'Distributor' which receives the notifications and transports them, how that side happens is up to the Distributor, so if those get transported trough ntfy, nextcloud, gotify or something else is not specified, but there need to be apps client-side to handle the protocol.
see: https://unifiedpush.org for everything