activate alerts when the value obtained from an API changes

Hello Dear customer,

I hope you are doing great

Can you please share more information about the API you are using? and what are you trying to reach on this case?

As many details you can share will be useful.

I am using the Palo Alto API to notify when a routing policy changes state.

https://Firewall/api/?type=op&cmd=<show><pbf><rule><name>FirtsRouteLVP</name></rule></pbf></show>&key=xxxxxxx

This return a XML response like this

<response status="success">
<result>
<dp>dp0</dp>
<entries>
<entry>
<extended-match>No</extended-match>
<sym-return>No</sym-return>
<interval>2</interval>
<name>FirtsRouteLVP</name>
<mon_action>Monitor</mon_action>
<nh_state>UP</nh_state>
<nexthop>x.x.x.x </nexthop>
<mon_ip>x.x.x.x</mon_ip>
<mon_slot>1</mon_slot>
<state>Active</state>
<egress>ethernet1/7</egress>
<match>1455551323</match>
<threshold>3</threshold>
<action>Forward</action>
<got>6054373</got>
<type>0</type>
<id>2</id>
<sent>6210176</sent>
<nexthop_type>IP</nexthop_type>
</entry>
</entries>
</result>

and in this response i check the next Hope state:

<nh_state>UP</nh_state>

if this is Down we need to receive a notify or alert message

Hello,

Thank you for your response and clarification.

My recommendation now is to use REST Custom v2 sensor and displays the answer in the sensor's message.

Please check the following article about REST Custom configuration: https://www.paessler.com/prtg/history/stable