Building custom agent protocol help

[Atoudam]

Hi

Im starting to build a custom active agent for an imbedded device.

i have found the protocol explanation pages

https://www.zabbix.org/wiki/Docs/pro...bbix_agent/3.4

however is there a resource that goes into more detail?
specifically I’m looking for info on the format etc of items

value
clock
ns
delay
last log size

thanks
adam