where are the rest api commands being run from?

sure, i'd like to scan all report names , dashboard names and anything else this api can scan on for a specific manufacturer's machine name (Call it CutRight, we use that machine to manufacture in a # of plants).    It looked to me like the regular search functionality in the service was able to even pick up bar chart series names and headings having that value.  I need to use the api (i think) to pick up occurences/hits in ws's i dont have view on.    i dont really want to request access on every ws, ws by ws.  Let me know if this is clear as some parts of pbi are a bit confusing to me.