NetBox
Read the exporter list from NetBox's device API with nothing installed on NetBox, narrowed by a NetBox filter, and verify it from the metrics endpoint.
Prometheus service discovery
Read the exporter list from any endpoint that serves a Prometheus HTTP service discovery document, including the NetBox prometheus-sd plugin, and verify it from the metrics endpoint.
Nautobot
Read the exporter list from Nautobot's device API with mapped-json, why depth=1 and primary_ip4.host are required, and how to verify it.
Any JSON endpoint
Read the exporter list from a home-grown asset database, a CMDB or any JSON endpoint by naming where the devices, the name, the address and the next page are.