Is there is a way to insert an AGENT_MONITOR job into an active application (AGENTMON) using a batch job versus going through ESP workstation or CSF, etc.
ESP Workload Automation
You can run an ESP batch job pointing to the master SUBSYSTEM to insert a AGENT_MON job using APPLINS command.
//STEP1 EXEC PGM=ESP,REGION=3000K,PARM='SUB(esp)MASTER' ===> Your ESP subsystem
//STEPLIB DD DISP=SHR,DSN=ESP.CD7YLOAD ===> Your loadlib
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
APPLINS APPL(applname.0) -
STATEMENTS('AGENT_MONITOR agentname; -
AGENT agentname; -
STATINTV 1; -
ENDJOB')
//
APPLINS Command: Insert Commands and Statements