compare_locations
Create SERPs for multiple regions and wait. Include: keyword, region (ISO2 like "US" OR canonical "New York,United States" OR numeric id), searchEngine (e.g. "google"). Optional: device ("desktop"|"mobile"), maxResults, language, priority ("LOW"|"NORMAL"|"REALTIME"|"INSTANT"). If device is set, we map it to isMobile automatically. Use synchronous:true only if you want the MCP to poll; otherwise omit and poll via get_serp. Example: {"keyword":"python","regions":["US","GB","CA"],"device":"desktop","maxResults":10}