Google Launches Universal Cart in the US, Betting on AI Shopping

Google on Thursday launched Universal Cart, a shopping tool that lets U.S. users collect and monitor products found across Google Search and the Gemini app, moving the company deeper into AI-driven commerce.

The tool, first previewed at Google I/O in May, functions as a single cross-retailer cart. Users save items they encounter while browsing; the cart preserves those items and the user's shopping progress across sessions. Google's pitch is straightforward: find something, save it, move on, and return later without restarting the search.

The launch matters beyond convenience. Google, Amazon, and OpenAI are all racing to build agentic commerce — systems in which AI agents act on a shopper's behalf across retailers rather than merely answering questions — and the company that controls the cart and checkout layer controls a significant share of the transaction pipeline.

What does Universal Cart actually do?

Universal Cart aggregates items from multiple retailers into one central hub. According to Google, the tool addresses three recurring frictions in online shopping:

• Persistence. Saved items and shopping progress survive between sessions, so users do not have to relocate products or rebuild a cart from scratch.
• Price and stock tracking. The cart sends notifications when a saved product's price drops or when an out-of-stock item becomes available again.
• Payment guidance. The tool offers tailored help during checkout, taking credit card perks into account when suggesting how to pay and surfacing relevant promo codes.

Each function moves Google from a search-and-discovery role toward direct involvement in the transaction itself — a shift with clear commercial stakes for a company whose core business depends on shopping-related queries.

How does checkout work?

Checkout runs on Google's Universal Commerce Protocol, or UCP, an open standard the company introduced earlier this year. UCP is designed to let AI agents and retailers cooperate across different stages of the shopping journey, including the final payment step.

The choice of an open protocol is notable. By positioning UCP as a shared standard rather than a closed system, Google is inviting retailers to plug into an agent-mediated pipeline that the company itself defines. If UCP gains adoption, Google gains influence over how agentic checkout works across the industry, not only inside its own products.

Where does this fit in Google's shopping strategy?

Google describes Universal Cart as its latest effort to make AI-powered shopping more convenient, and it arrives alongside a cluster of existing features:

• Conversational product discovery in Search's AI Mode, which lets users find products through dialogue rather than keyword queries.
• "Let Google Call", a tool that deploys an AI agent to contact nearby stores and check whether an item is in stock.

Together, these tools sketch a pipeline: discovery through AI Mode, inventory verification through Let Google Call, collection and tracking through Universal Cart, and checkout through UCP. Google is covering the full shopping journey with agent-based systems at each stage.

The timeline is consistent. UCP arrived earlier this year, Universal Cart was previewed at Google I/O in May, and the U.S. rollout landed Thursday — a steady cadence that suggests the shopping push is a coordinated program rather than a series of isolated experiments.

Who else is building agentic commerce?

Google is not alone. Amazon, OpenAI, and other rivals have added agentic commerce features as companies look for ways to make chatbots useful beyond answering questions.

That competitive framing explains the urgency. Chatbots that only converse generate engagement; chatbots that complete purchases generate revenue. Google's advertising business depends on remaining the starting point of shopping decisions, and agentic commerce threatens to move that starting point into rivals' assistants. Universal Cart keeps the cart — and the shopper's intent data — inside Google's surface.

Why does a cart matter this much?

A cross-retailer cart is a small feature with a large structural implication. Retailers have historically owned the cart: the moment a shopper adds an item, the retailer controls the relationship, the payment data, and the upsell opportunities. Universal Cart relocates that moment to Google.

For shoppers, the immediate benefits are concrete: price-drop notifications, restock alerts, promo codes surfaced automatically, and credit card perks factored into payment choices. For Google, the benefit is positional — the company sits between the shopper and every retailer in the cart simultaneously.

The tool's availability is currently limited to U.S. users. Google has not announced rollout dates for other markets, but the I/O preview in May and Thursday's launch establish the product as a priority release for 2025 rather than a limited experiment.

What comes next?

The trajectory of UCP will likely determine how far Universal Cart extends. An open standard only carries weight if retailers adopt it, and adoption depends on whether Amazon, OpenAI, and other agentic commerce players build on Google's protocol or push competing ones. Thursday's launch puts the cart in users' hands; the next question is whether the rest of the industry follows Google's checkout.