There was to be an app to integrate with Splunk but I do not see it on your site.
http://cloudcheckr.com/2016/05/cloudcheckr-creates-app-splunk-integration-check/
Hi from CloudCheckr! Contact us directly and we can help you integrate Splunk with CloudCheckr, or follow the directions here:
Download the app here: https://s3.amazonaws.com/cloudcheckr-splunk-app/CloudCheckr.spl
Get an API Access key here: https://app.cloudcheckr.com/#/Api
In CloudCheckr, go to Account Settings (bottom left) -> Integrations -> Exports and select Splunk.