The CLI is a small footprint tool that you can use on its own or with the Console to complete Oracle Cloud Infrastructure tasks. The CLI provides the same core functionality as the Console, plus additional commands.
https://blogs.oracle.com/datawarehousing/managing-autonomous-data-warehouse-using-oci-curl Examples of using Autonomous Database managing by REST API
https://oracle.github.io/learning-library/workshops/autonomous-transaction-processing/LabGuide900ConfigureOCI-CLI.md