LLD discovery with external script

[mmarkert]

Hi,
I use a bash script which generates this JSON output:

{"data": [
{
"{#ID}": "1.1",
"{#NODE_ID}": 1,
"{#SLOT}": 1,
"{#STATE}": "healthy",
"{#CAPACITY}": "479833620480",
"{#SLOT_TYPE}": "SSD",
"{#DISK_TYPE}": "SSD",
"{#DISK_MODEL}": "INTEL_SSDSC2KB480G7",
"{#HIGH_ENDURANCE}": false,
"{#DRIVE_BAY}": "E1"
},

{
"{#ID}": "1.2",
"{#NODE_ID}": 1,
"{#SLOT}": 2,
"{#STATE}": "healthy",
"{#CAPACITY}": "479833620480",
"{#SLOT_TYPE}": "SSD",
"{#DISK_TYPE}": "SSD",
"{#DISK_MODEL}": "INTEL_SSDSC2KB480G7",
"{#HIGH_ENDURANCE}": false,
"{#DRIVE_BAY}": "F1"
},

...

]
}

I would like to use LLD for generating all items automatically and push the values to the ZABBIX server. The script is implemented as "UserParameter=qf2.cluster.slots,/opt/zabbix/share/zabbix/externalscripts/qf2_cluster_slots.sh" in zabbix_agentd.conf (ZABBIX agent is running on server).

Can someone please explain which steps are necessary for the discovery rule and item prototypes? Type: Agent or Trapper? Examples are very helpful.

Do I need two different scripts (for item generating and value querying)?

Thank you very much!

Martin