What we measure, and how it's read.
We run agent-style journeys against your site the way a shopping agent would: find the category, compare options, reach a real product page, resolve price and availability, and attempt to transact.
Every break is logged — blocked crawlers, unreadable product data, interstitials, missing availability, price mismatches, checkout steps an agent cannot complete.
The same journeys are run against named competitors and interceptors, so you see what the agent finds easy about them and hard about you.
Gaps in competitor journeys become deflection opportunities: the specific queries and moments where a better-prepared brand takes the recommendation.
Stage: Uncover.
Ghost Shopper is how MARK executes the Uncover stage — it shows you exactly what a competitor is doing right that an AI agent trusts.
See the full QUEEN framework →You're losing revenue to AI you can't see.
Most AI-driven revenue loss is not a branding problem — it is an agent hitting a wall on your site and taking the path of least resistance to someone else — across 11 retailers tested, 60% never reached a real product page.
Ghost Shopper turns that into a concrete, reproducible list of breaks, which makes it fixable rather than theoretical.
Ghost Shopper, answered.
↳ What is Ghost Shopper?
Ghost Shopper is a diagnostic that analyses how AI shopping agents experience your website — and your competitors' — exposing exactly where the agentic commerce journey breaks down and where deflection opportunities exist.
↳ How do AI shopping agents see my website?
Very differently from a human. Agents rely on structured product data, readable prices and availability, clean navigation and unrestricted crawler access. Anything that depends on visual layout, scripts or interstitials tends to be invisible or fatal to them.
↳ Why do AI agents fail to reach my product pages?
Common causes are crawler restrictions, product data locked behind client-side rendering, missing or stale availability and price signals, and category structures the agent cannot traverse. Ghost Shopper identifies which of these applies, page by page.
↳ Can Ghost Shopper analyse my competitors?
Yes — that is the point. The same agent journeys are run against named competitors and interceptors, so you can see what an agent trusts about them and where their journeys break in ways you can exploit.
See how agents experience your site — free audit — free.
See how agents experience your site — free auditHow often your brand is recommended versus competitors and interceptors in your category, refreshed monthly.
Machine Preference Index measures how often your brand surfaces.
How ready your brand is to be selected by autonomous AI agents, across both AEO and ACO.
What AI models actually believe about your brand — not just whether they recommend it.
Continuous monitoring of the data and content feeds AI models pull from, so drift never silently breaks visibility.