Checkout accounts for roughly two percent of the agentic traffic anyone has actually measured. The other ninety-eight percent is search and comparison — agents looking, not buying.
That’s not my estimate. HUMAN Security has been tracking this for a while now, and the split has barely moved: product and search pages take up somewhere around three-quarters to four-fifths of everything agents do, checkout stays in the low single digits.
If someone in the room uses that to say “agents aren’t buying yet, so this isn’t urgent,” they’re reading the right number and drawing the wrong conclusion from it. Agents fail constantly before they ever reach checkout — that’s expected, unremarkable. The real question isn’t whether they fail. It’s what happens to your business when they do.
Two percent isn’t the number that matters here. It’s a lagging indicator, and a narrow one — it only counts what makes it all the way to checkout. Everything that happens before that never shows up there: dead ends, stale information, sessions abandoned two steps early. It shows up nowhere, because almost nothing in most companies is built to notice a query that goes silent.
That’s the actual case for urgency, and it isn’t about scale. It’s about the gap between when the damage happens and when anyone could see it. A checkout metric only tells you about the transactions that survived contact with your systems. It says nothing about the ones that didn’t — and by the time checkout volume is large enough to be alarming, the weak parts of your funnel will have been quietly filtering out agent traffic for a long time, unmeasured.
Waiting for volume to justify the work means waiting for a signal that, by construction, can’t reach you until the problem has already been running for years.
Don’t build a program around two percent. Build one around the fact that the other ninety-eight percent happens exactly where nobody’s watching.