The API should support the ability to query grouping functions: groupfunc (grpavg, grpmax, grpmin, grpsum). This would allow better understanding of item values from a grouping perspective for validation before implementing the grp* item key and the ability to look at grouped data values where a grp* item key was not previously set.

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There is precedent for the use of group aggregates with the existing API methods, but the implementation is akward and could benefit from optimization(s) rather than multiple queries. For example:

• zabbix_tool: print_hostgroup_cpu
• https://workaround.org/zabbix-api-and-python/