The Search Console properties a site reads from

The Search Console properties Frontshelf reads for a site: the primary first (what every gsc read uses unless source_id names another), then each alternate. Each has its scope sentence (which pages it counts), role, access (available, reauth, lost), status, and per search type whether Google supports it, the first day of history, the last final and provisional days and the days about to expire unfetched. One with no figures yet carries wait: why, with the dashboard's sentence (a lapsed account, no account, paused; else its place in the sync queue). Reading it moves nothing in the queue. Free. Next: pass a source_id to the other gsc reads to read an alternate; gsc_sources_choose makes one the primary.