Hello,
How to do Power Cycle System (Cold Boot) via rest api
Below is example in ILO
https://hewlettpackard.github.io/ilo4-rest-api-docs/#log-out-of-a-session
curl -H "Content-Type: application/json" -X POST --data "@data.json" https://{iLO}/redfish/v1/Systems/1/Actions/ComputerSystem.Reset/ -u username:password --insecure
Contents of data.json
{“ResetType”: “ColdBoot”}