A new release of Qualys Cloud Suite, Version 2.36, includes an updated API which is targeted for release in February 2019. The specific day will differ depending on the platform. See platform release dates on the Qualys Status page. This API notification provides an early preview into the coming API, allowing you to identify use cases that can leverage this updated API.
Host Asset API: Search using EC2 attributes /qps/rest/2.0/search/am/hostasset
The Asset Management and Tagging API has been updated to allow searching host assets using EC2 attributes.