Kairntech can be fully controlled and run via the REST API.
You can download some python code to help you integrate Kairntech into your environments via the REST API. The sample code explains how one specific task can be accomplished via the API in python, logging on to a Kairntech server and annotate a document.
The full range of API calls can be inspected and tried out here: https://sherpa-sandbox.kairntech.com/swagger-ui/