Use when tracking how AI-engine citations of your site change over time and tying each change to the commit that caused it — "did my last PR win or lose citations?", "why did ChatGPT stop citing us?", "daily GEO citation diff", "citation regression", "which commit moved our AI visibility". Runs the GEO Diff Bot — diffs two geo-check snapshots and correlates each gained/lost citation to the content commit(s) in the window, or flags it as an external (model/competitor/crawl) shift when nothing in your repo changed. Pairs with the geo-check MCP (geo_track) which produces the snapshots. Mature-phase monitoring, not one-shot audit.
