Consumers Are Ready for AI to Shop. They're Not Ready for AI to Pay.
New data from August 2026 shows AI shopping adoption accelerating faster than trust in AI payments — and merchant-side protocol fragmentation isn't helping close the gap. Here's what the latest numbers say, and why it's a payments problem, not a discovery problem.
The adoption numbers keep climbing
AI shopping is no longer a novelty. In the last three months alone, 68% of consumers have used at least one AI platform for shopping (RTB House/Cint, 10 August 2026), and 69% say they're open to letting AI make purchases on their behalf without approving each individual transaction (Croud Consumer Index, 13 August 2026). Three in four would use an AI-powered instant-checkout service in at least one product category.
Look further out and the trajectory holds: a third of consumers expect at least 10% of their purchases to be AI-driven within a year (Checkout.com, "Agentic Commerce 2026," 9 June 2026), and the wider market is projected to reach $3-5 trillion in revenue by 2030 (Research and Markets, 17 August 2026).
Demand, in other words, is not the problem.
But almost none of it is turning into actual payments
Here's where the story changes. That same Research and Markets report breaks down where AI is actually being used across the shopping journey: about 62% for product comparison, but only ~23% at checkout and 19% post-purchase. Checkout.com's research puts a sharper number on it — just 3% of current transactions involve an AI agent at all, even though 89% of merchants say they're actively preparing for agentic commerce.
Consumers are happy to let AI browse, compare and shortlist. They stop short at letting it pay.
The gap is trust, and it's concentrated at the money moment
ACI Worldwide/YouGov surveyed 2,080 UK adults and found a clean split by task type: 50% trust AI to find the best price and 43% trust it to follow a spending limit — narrow, boundaried tasks. But trust collapses to just 15-18% when the task shifts to financial best-interest judgment, payment data security, or resolving a problem after the fact.
RTB House's August research shows the same pattern from a different angle: trust in AI as a shopping tool varies enormously by which AI you mean — 43% trust ChatGPT and Google AI Overviews, but only 23% trust Claude and 21% trust Grok. And 35% of consumers overall (44% of baby boomers) say they want a human to review a transaction before AI completes it.
Ask people what would change their mind and the answer is consistent and specific: spending caps, instant revocation of permissions, and easy cancellation top the list of non-negotiables (Checkout.com) — and consumers put a real number on it, saying they'd let an agent spend an average of £177 per purchase without needing extra approval.
Merchants aren't ready either, and the plumbing is fragmented
The demand side isn't the only bottleneck. Three competing payment protocols — UCP, ACP and AP2 — launched in quick succession, and merchants are hedging rather than committing: Adyen built a three-protocol integration specifically because fragmentation is the biggest merchant-side risk right now.
Real-world adoption numbers are still small and, in places, contested. Before OpenAI paused Instant Checkout in March 2026, estimates of how many Shopify merchants had gone fully live on ACP checkout ranged from about a dozen to around 30 — Forrester and Shopify's own public statements don't even agree on which figure is right. Google's UCP, meanwhile, is live with a handful of major US retailers, with Canada and Australia next in line — and UK rollout still has no announced timeline as of this month.
For a UK-based agent builder or buyer, that means the infrastructure to transact safely, at scale, simply isn't finished yet.
Why this matters
Put the two halves together and the picture is clear: the obstacle to agentic commerce was never whether people would let AI shop for them — they already do. It's whether they'll let AI pay for them without a human checking every line. And the research says they will, but only once specific conditions are met: hard spending limits, the ability to revoke access instantly, easy cancellation, and some way to verify that what the agent is about to buy actually matches what was asked for.
That's precisely the layer that's missing from most of today's agent commerce stack — and it's the layer Agent Pay Safe is built around. Spending mandates, intent verification, and passkey approval, before any money moves. Not because the demand isn't there, but because trust has to be engineered in, not assumed.
Sources: RTB House/Cint (10 Aug 2026); Croud Consumer Index via ConsumerAffairs (13 Aug 2026); Research and Markets via GlobeNewswire (17 Aug 2026); Checkout.com, "Agentic Commerce 2026: The State of Consumer Demand and Merchant Readiness" (9 June 2026); ACI Worldwide/YouGov (June 2026); Forrester and Shopify public statements on ACP merchant adoption (March 2026).