The problem with AI visibility is that it is invisible by default. A search ranking is something you can look up; what an AI says about you happens inside millions of private conversations you never see. So the only way to manage it is to measure it: ask the engines the questions your buyers ask, and record whether you show up, what they say, and which sources they cite.
It is also not a single number. The same prompt can mention you on one run and a competitor on the next, and the answer differs by engine, so a single blended "AI visibility score" hides the variance that matters. The useful unit is presence per engine over time, tracked against the prompts that drive your category, which is exactly what geotoolbox is built to do. Improving it is the job of generative engine optimization.