You have a device, an API or an application with no usable Zabbix template, and writing one properly means learning the discovery rules, the value maps and the trigger logic before you even start. I write it for you, and you get something you can read and maintain rather than a black box.
If the device speaks SNMP with a published MIB, or exposes JSON over HTTP, this is usually straightforward. Proprietary binary protocols and undocumented APIs are the cases where I will tell you the honest answer about effort before quoting.
I worked at Zabbix itself, not just with the product. On template work that is the difference that shows: the conventions I build to are the ones the people who maintain Zabbix use, so what you get reads like an official template rather than like somebody's private XML. Nine years on the product, and a Zabbix Certified Trainer, Expert, Professional and Specialist.
I also build the tooling in public rather than describing it in a pitch deck. The template
generator below is the first result on Google for zabbix template generator,
which is how most people reading this page arrived at the site in the first place. And I
have been publishing Zabbix walkthroughs on YouTube for years - if you want to judge how I
explain things before you hire me to do them, that is the fastest way.
If your template is simple enough that the free generator handles it, use the generator. I would rather you solved it in ten minutes than paid me for an afternoon.
Tell me what you are trying to monitor, how it exposes its data, and how many of them you have. If it is a published device with a MIB or a documented API I can usually quote from that alone.