Introducing Google-InspectionTool: The Latest Addition to Google's Crawler User Agents.
Google has added a new user agent named Google-InspectionTool to its list of Google crawlers. It mimics Googlebot and is used by search testing tools such as the Rich Result Test and URL inspection in Search Console. The user agent tokens for this are Google-InspectionTool and Googlebot, and it has two full user agent strings for desktop and mobile. The update is now complete, according to John Mueller from Google.