Overview
URL Indexing shows whether Google has indexed your posts, pages, and terms. The status appears in the list of posts and terms in WordPress. You do not need to open Google Search Console and check each URL.
Connecting to GSC
URL Indexing needs permission to read your data from Google Search Console (GSC). To get this permission, you create a Google app with your own Google account. You do this once. It is free and takes about 10 minutes.
Indexing Status
See the status
Settings
Go to Settings > Slim SEO > URL Indexing tab.