Hi,
How to use (call and receive response) of the rest service for search from external application to splunk calling splunk rest api.
From the external service you don't know the search id and you haven't saved search this is what I am assuming. Use https://:/services/search/jobs/export
There's an entire site and a specific tutorial with info on how to do this. http://dev.splunk.com/view/rest-api-tutorials/SP-CAAADQ6