To be able to access the monitored data within a third party tool, you can redirect the the output to a file or use it as input stream for another application.
The following command will redirect the monitor output data to the file 'MonitorData.json':
apax mon --targetIP 192.168.0.1 --certificate ./cert.cer --password aSecurePassword --symbols "myBool" --output json --continuously >> MonitorData.json
After executing the command the file 'MonitorData.json' will contain json objects that represents the history of the variable 'myBool'. The monitoring can be ended by pressing the key 'x' on the keyboard.