The biggest limit is access, not payment. Lots of websites block AI agents, and Wallet can’t buy from a site that won’t let the dot in. Amazon, the largest retailer doing this, stops agents from buying on its store and steers shoppers toward its own Alexa assistant. United Airlines said this week it will block agents from booking flights. Walmart takes the opposite approach, letting agents shop through agent profiles that carry their own spending limits.
Even willing stores can stumble. Fraud tools tuned to catch bots may flag ChatGPT’s cloud browser and decline or cancel a genuine order. To fix that, OpenAI is working with fraud specialists Signifyd, Sardine, Riskified and Forter, plus payment processors Stripe, Adyen and Checkout.com. It also published a Commerce Partner Playbook that tells businesses how to let verified agents past their firewalls, upload product feeds and set up a business profile in ChatGPT.
History suggests patience. OpenAI tried checkout inside ChatGPT before, with an Instant Checkout feature in autumn 2025, and backed away from it quickly, according to reports. Visa’s own trial this month is a reality check too: it put 22 AI models to work as shoppers, and 42.8% of their attempts went wrong.