Creating API plugin for application without any system OIDs available

[Yggy]

If you know the OID you can use Setup > Services > Other services > Integrate Nagios plugins to go for a specific OID directly.

For my printers I get the device info OID with SNMPv2 that way.

There is some more info on:

Monitoring network services (Active checks) - Monitoring of HTTPS, TCP, SSH,...