It looks like the Management API feature was introduced in the R80 Check Point Release:
https://sc1.checkpoint.com/documents/latest/APIs/index.html#api_versions~v1.5%20
Here are the Checkpoint API Docs:
https://sc1.checkpoint.com/documents/latest/APIs/index.html#cli/introduction~v1.5%20
Checkpoint App for Phantom:
https://my.phantom.us/4.5/docs/app_reference/phantom_checkpoint
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