As I did not find any template to monitor my Meraki APs on the Meraki CLoud, here you are a template proposal I made.

I have tested on my zabbix server and it works.

the idea is to find all Meraki APs in the Cloud (SNMPv2-SMI::enterprises.29671.1.1.4.1.2)

And each Meraki AP status (SNMPv2-SMI::enterprises.29671.1.1.4.1.3) (0-Down, 1-UP)

With a Discovery List I add each AP as a Item Prototype and create a High trigger proto for each status.

To make it work you must enable SNMP read on your MERAKI cloud:

https://documentation.meraki.com/zGeneral_Administration/Monitoring_and_Reporting/SNMP_Overview_and_Configuration

The Template Needs as well a MACRO: {$SNMP_MERAKI_COMMUNITY} for the SNMP Comunity