How to know current rollover settings

How can I know my current rollover settings?
Is there an API to help me know the same?
I have been through https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-rollover-index.html but did not find any such API

Can you explain what you mean with not finding such an API? What Elasticsearch version are you using?

If you do not execute a rollover call manually, it is possible that the index has an index lifecycle policy applied, that contains the rollover configuration.

Hope this helps!