Hi, you will not be able to install an agent on the Delphix engine since you do not have access its operating system. However, you have several methods for monitoring the engine.
Using standard SNMP
SMTP for sending emails
Syslog to send Delphix logs to a syslog server
Custom scripts using our CLI or API
Mission Control - our purpose built monitoring solution for Managing multiple Delphix engines - https://docs.delphix.com/display/DOCS50/Getting+Started+with+Mission+Control