I use Splunk Cloud so I can't use Splunk REST API Modular Input. On my instance I'm not able to browse REST in data inputs.
Is any option to deal with outside REST data?
Would you be so kind to answer me?
For that you should use the HTTP Event Collector (HEC).
It’s basically REST inputs with pre shared keys.
Currently, the best way to do this is with a Splunk Heavy Forwarder. The HF can be at your site or in any Cloud provider (AWS, Azure, etc.) then push the data to your SplunkCloud instance.