https://
<firewall>/api/?type=config&action=get&xpath=/config/devices/entry/vsys/entry[@name='vsys1']&key=
<api_key>

https://<panorama>/api/?type=config&action=get&xpath=/config/devices/entry/vsys/entry[@name='vsys1']&target=<serial>&key=
<panorama_api_key>

https://<panorama>/api/?type=config&action=get&xpath=/config/devices/entry/*[name()!='vsys']|/config/devices/entry/vsys/entry[@name='vsys1']&key=
<panorama_api_key>

https://
<firewall>//api/?type=config&action=get&xpath=/config/devices/entry/vsys/entry[@name='vsys1']/address

<response
status="success" code="19"> 
    <result total-count="1" count="1"> 
        <address admin="name" dirtyId="8" time="2015/10/20
15:32:36"> 
            <entry name="testobject"> 
                <ip-netmask>192.0.2.2</ip-netmask> 
            </entry> 
            <entry name="test1"> 
                <ip-netmask>192.0.2.12</ip-netmask> 
            </entry> 
... 
        </address> 
    </result> 
</response> 

https://
<firewall>//api/?type=config&action=get&xpath=/config/panorama/vsys/entry[@name='vsys']/pre-rulebase/security

https://
<firewall>/api/?type=config&action=get&xpath=/config/predefined/application