Hi Jsokol,
If you want to use the API for querying and you already have the vulnerability IDs that exist in your network, maybe you can use the Vulnerability Affected Assets API: InsightVM API (v3)
This will give you a list of asset IDs of all the assets that are affected by this vulnerability. If you have alist of vulnerability IDs, then maybe this would be the best approach for you. I hope this helps?