How Universal Commerce Protocol (UCP) Enables AI Shopping (Google, Shopify)

At the National Retail Federation’s ‘Big Show’ in New York, Google and Shopify made a significant announcement. They officially introduced the Universal Commerce Protocol (UCP). This is an open-source standard. It is designed to let AI agents handle the entire shopping journey across different retailers.

This new protocol allows consumers to discover products and build a cart. They can finish payment directly within a chat interface like Google Search (AI Mode) or the Gemini app. They never have to visit a merchant’s website.

Backed by industry giants like Walmart, Target, PayPal, and Visa, UCP aims to solve the fragmentation of ‘Agentic commerce’ while ensuring merchants keep full control over their customer data and pricing logic

3 Key Takeaways

Unified Shopping Standard: UCP is a standardized language that allows AI agents to seamlessly interact with any retailer’s backend. This enables discovery and checkout across the web without requiring custom integrations for every store.
Merchant Control: Unlike aggregators that hoard data, UCP ensures the retailer remains the Merchant of Record. The retailer owns the customer relationship, pricing, and fulfillment decisions.
Direct AI Checkout: The protocol powers a native checkout experience in Google AI Mode and Gemini. It allows users to buy from stores like Shopify merchants instantly. They can use saved credentials in Google Pay.

What is UCP? – The Engine of Agentic Commerce

The Universal Commerce Protocol (UCP) addresses a critical “N x N integration bottleneck” that has historically made it difficult for AI agents to shop at multiple stores

things possible in agentic commerce with UCP:

loyalty programs
subscriptions
delivery dates
bundles
custom terms

basically all the things that make your checkout yours pic.twitter.com/CerpwFkqIy
— Shopify (@Shopify) January 13, 2026

A Protocol to Cover All Commerce

A screenshot of the Shopify admin interface for a store named "Villa." The "Sales channels" section is open, displaying a new feature card titled "Agentic storefronts." The card explains: "Get discovered across AI chats and channels. Customers can buy your products on the spot, without leaving the channel." Below this, a configuration panel titled "Agentic storefronts" allows the user to toggle visibility for specific AI platforms: "ChatGPT Instant Checkout," "Google AI Mode and Gemini," and "Microsoft Copilot," all of which are currently switched to the "on" position. — Source: Shopify

UCP is an open-source standard. It defines how commerce actions, like searching for a product, are communicated between an AI agent and a business. It also outlines how adding a product to a cart is managed. Additionally, checking out is part of this communication process. Retailers no longer need to build a unique connection for every platform.

By implementing UCP once, they can be accessible to any AI agent that speaks the language. This standardization covers everything from product discovery to post-buy support, like tracking and returns

Empowering Serendipity

During the launch demo, Shopify CEO Tobi Lütke emphasized how this technology brings “serendipity” back to shopping.

“This is one of the really exciting parts about agentic… It’s really good at finding people who have specific interests and finding the product that is just perfect for them. Like, I would have never searched for this product, but somehow it found me right on the other side. This serendipity is where the best of commerce happens.”

— Tobi Lütke, Shopify CEO and founder. [Source: TechCrunch]

Integrate with Google: Direct Selling in AI Mode

For retailers, the immediate advantage of UCP is the ability to sell directly on Google’s most advanced surfaces

Direct Selling in Google AI Mode and Gemini App

A schematic diagram titled "Universal Commerce Protocol" on a dark background, illustrating how commerce services connect to AI agents. On the left, a cluster of icons represents various commerce functions (inventory, payments, shipping, ratings). These connect to a central block labeled "Universal Commerce Protocol" containing "Services," "Capabilities," and "Extensions." This central block branches out to the right into four specific API-like endpoints: "search_catalog," "create_checkout," "update_checkout," and "complete_checkout," demonstrating the standardized flow for AI transactions. — Source: Shopify

The protocol enables Direct selling in Google AI Mode. It achieves this by allowing the AI to show buy options natively in the Gemini app. This addresses newer consumer behavior, which has shifted toward more conversational commerce.

“Today’s shoppers expect to go from search to purchase in a single conversation,”

—- Nayna Sheth, Head of Product for Agentic Payments, Microsoft. [Source: Shopify]

Branded Business Agents

A sequence of three smartphone screens demonstrating a seamless checkout experience.

Left Screen: A product page for a "Monos Carry-On Pro Suitcase" ($295.00) showing a "Best price" tag and a "Buy" button.

Center Screen: A "Review your order" pop-up overlay. It shows the selected Ocean Blue suitcase, the user's saved shipping info (Elisa Beckett), and the payment method (Capital One VentureOne). A prominent black "Pay with G Pay" button is at the bottom with a total of $289.73.

Right Screen: An "Order complete" confirmation screen with a blue checkmark, Order ID, and a summary of the purchase and delivery details, confirming the transaction was successful. — Source: Google

Merchants can integrate AI-powered Business Agents within Google Search to answer customer questions. Examples of this include retailers like Lowe’s, Michaels, Poshmark, and Reebok, who are using the technology to offer branded support.

“We want retailers to be able to connect to users on our surfaces but using their own voice.”

— Vidhya Srinivasan, VP of Google ads and commerce. [Source: CNBC]

How UCP will Benefit the Entire Commerce Ecosystem?

UCP was designed as a ‘matchmaker’ protocol, ensuring value for both buyers and sellers without one side dominating the data.

A schematic diagram titled "Universal Commerce Protocol (UCP)" illustrating the ecosystem powering agentic experiences.

Left Side (Consumer Surfaces): A box represents consumer-facing AI tools (like Search or Gemini) sending requests.

Center (UCP Core): The main block details the "Universal Commerce Protocol" which acts as a common language. It lists capabilities such as "Product Discovery," "Cart," "Identity Linking," "Checkout," and "Order."

Bottom (Underlying Communication): This layer shows the technical foundation, including "APIs," "Model Context Protocol (MCP)," and "Agent2Agent (A2A) Protocol."

Right Side (Business Backends): A box represents backend systems that process orders and manage inventory, acting as the Merchant of Record. — Source: Google

Flexibility for Businesses

The protocol offers flexibility, allowing businesses to “pick and choose” what they want to implement. This means retailers can decide exactly how their inventory and pricing are exposed to AI agents.

“Businesses can pick and choose what they want so there’s flexibility for them.”

— Vidhya Srinivasan, VP of Google ads and commerce. [Source: CNBC]

The Matchmaker Role

Google views its role in this ecosystem as a ‘matchmaker,’ facilitating connections rather than owning the inventory. This approach is part of Google’s broader bet on AI in retail. Google aims to capture a projected $3 trillion to $5 trillion global opportunity. This approach is part of Google’s broader bet on AI in retail to capture a projected $3 trillion to $5 trillion global opportunity

“Our role in the ecosystem is that of a matchmaker and one way is with ads.”

— Vidhya Srinivasan, VP of Google ads and commerce. [Source: CNBC]

Google UCP Partners: PayPal, Visa, and Shopify Agentic Commerce

The rollout of UCP includes a significant list of partners, ensuring it can handle payments and inventory at scale.

Major Retailer Adoption

A screenshot of a digital product catalog or marketplace interface featuring a grid of various consumer items. Visible products include "Rubber Hex Dumbbells 10lb" priced at $80.00, a "Trail Helmet MIPS" in peach color priced at $215.00, and a "Cast Iron Skillet" priced at $120.00. Other partially visible items include yoga pants, a skateboard deck, and a geometric table, all displayed with clean product photography on cards with rounded corners.

Source: Shopify

The protocol was developed in collaboration with Shopify, Etsy, Wayfair, Target, and Walmart. This diverse group ensures the standard works for different types of merchants. It serves massive big-box stores as well as individual crafters on Etsy.

Payment Integration

While specific payment details are evolving, the system is designed to work with the broader agentic ecosystem.

“It’s a really big focus for us to innovate in the space that adds value to both retailers and buyers.”

— Vidhya Srinivasan, VP of Google ads and commerce. [Source: CNBC]

Risks and Opportunities with Google UCP: Personalization and Privacy

The capabilities of UCP bring significant benefits but also introduce new dynamics in how products are marketed.

Learn more: The agentic commerce platform: Shopify connects any merchant to every AI conversation

Dynamic Offers and Discounts

A key opportunity for retailers using UCP is the ability to offer special discounts to users during AI-driven product recommendations. This setup enables “dynamic negotiation.” Merchants and agents declare the commerce capabilities they support, such as discounts, loyalty programs, or subscriptions. The protocol negotiates the difference without needing a custom integration meeting. For example, a customer can submit discount codes in the chat. They can also input loyalty credentials directly to receive personalized pricing instantly.

Privacy Considerations

While this level of personalization is powerful, UCP is designed to keep merchants in control of their customer relationships. The protocol ensures that merchants keep ownership of their data. They also keep control of their business logic. This approach prevents surrendering it to an aggregation platform. Google emphasizes its role as a “matchmaker.” It facilitates connections between retailers and shoppers. Yet, it does not take over the merchant’s direct relationship with the consumer.

Additionally, UCP supports secure credential flows, ensuring that sensitive user data like payment information is handled securely through established protocols.

Community Reactions

Optimism for Brands

A screenshot of a post on X (formerly Twitter) by user ivelin.eth (@ivelini). The post comments on the industry impact of the new protocol: "Google and Shopify Launch Universal Commerce Protocol for AI agents," noting that it will benefit brands with "genuine innovative products." Attached is a split graphic: the left side is titled "Universal Commerce Protocol" and displays a grid of major partner logos including Shopify, Etsy, Wayfair, Target, Best Buy, PayPal, Visa, and Stripe. The right side shows a smartphone interface demonstrating the user experience, where a Google AI search for a suitcase returns a direct, shoppable product card for a "Monos Carry-On Pro Suitcase" priced at $295.00. — Source: X

“Not nothing. Google and Shopify Launch Universal Commerce Protocol for AI agents. Top quality frontier models that users trust to be truth seeking will hugely benefit brands with genuine innovative products that shine because consumers love them, not because of massive marketing budgets and paid ads. Conversely brands that rely on dominating eyeballs via traditional and social media platform ads are on notice.”

The End of Friction

A screenshot of a post on X (formerly Twitter) by user Jonathan Moss (@JonathanMoss) dated January 12, 2026. The post discusses a new industry development: "Yesterday Shopify announced the Universal Commerce Protocol—built with Google." The user highlights the implications, stating that consumers can now "discover, negotiate, and buy products entirely inside AI conversations," eliminating the need for landing pages, forms, or cart abandonment emails. The post concludes with the phrase: "Just... resolution." — Source: X

“Yesterday Shopify announced the Universal Commerce Protocol—built with Google. Consumers can now discover, negotiate, and buy products entirely inside AI conversations. No landing pages. No forms. No cart abandonment emails. Just… resolution.”

Economic Predictions

A screenshot of a post on X (formerly Twitter) by user Sumjit (@sumjitg). The tweet announces the launch of the "Universal Commerce Protocol (UCP)," describing it as a standard that lets AI agents shop across retailers like Shopify, Target, Walmart, Etsy, and Wayfair without custom integrations. The post highlights key statistics and predictions:

Agents handle everything from discovery to checkout using Google Pay.

McKinsey predicts AI agents will handle 50% of online shopping by 2030, generating $3-5 trillion globally.

Early tests show transaction times cut by 30%.

However, only 24% of consumers currently trust fully autonomous AI purchases. The user also notes potential risks, such as the death of traditional e-commerce SEO and agent bias toward certain brands, concluding that "20+ partners are already live." — Source: X

“Google just launched UCP (Universal Commerce Protocol). It is a standard that lets AI agents shop across any retailer without custom integrations… McKinsey predicts AI agents will handle 50% of online shopping by 2030, generating $3-5 trillion globally early tests cut transaction times by 30%”

Digital Marketing Concerns

A screenshot of a Reddit post on the r/DigitalMarketing subreddit by user himanshudas52 titled "Google launched Universal Commerce Protocol (UCP)." The post sparks a discussion for digital marketers, noting that the new protocol allows online shoppers to "complete the entire shopping process from product selection to payment check out within the platform without having to visit the ecommerce portal." The user also mentions that OpenAI recently launched similar features and asks the community how they see their roles changing in this "evolving Ecommerce space." — Source: Reddit

“Google has just launched Universal Commerce Protocol (UCP). It enables online shoppers to complete the entire shopping process from product selection to payment check out within the platform. Shoppers do not need to visit the e-commerce portal. Open AI has also launched similar features few days back. So as Digital Marketers how do you see your role especially in this evolving Ecommerce space?”

Action Points — How to Get Started with Google UCP

For Retailers: If you are a Shopify merchant, check the platform’s new AI settings. This ensures your store is prepared for Google agentic shopping.

For Brands: Consider setting up campaigns in Merchant Center to offer special discounts for specific AI-driven queries
For Developers: Explore the compatibility of UCP with Agent2Agent (A2A) and Model Context Protocol (MCP) to build custom shopping agents
For Consumers: Look for new chat-based buying options in Google Search to test the “serendipitous” shopping experience

FAQs

What is UCP?

UCP is an open-source protocol that allows AI agents to handle discovery, buying, and support across retailers without custom integrations

Who created UCP?

Google and Shopify launched the protocol, along with partners like Walmart and Target.

Does UCP work with Google Search?

Yes, UCP enables direct selling in Google AI Mode and the Gemini app.

What is a Business Agent?

A Business Agent is a branded AI within Google Search that retailers like Lowe’s use to answer customer questions.

Is UCP free?

It is an open-source standard, meaning the protocol itself is free to use for development.

How does UCP help with payments?

It facilitates the shopping process, often utilizing saved payment credentials in platforms like Google Pay.

What retailers are using UCP?

Launch partners include Walmart, Target, Etsy, Wayfair, Lowe’s, Michaels, and Reebok.

Can AI negotiate prices?

Yes, the protocol allows retailers to offer special discounts during AI-driven interactions.

What is agentic commerce?

It refers to commerce where AI agents handle tasks like finding products and completing purchases on behalf of the user.

Does UCP handle returns?

Yes, it is designed to handle “post-purchase support,” which includes tasks like tracking and returns.

Is my data safe with UCP?

Google claims UCP allows merchants to connect without losing control of their data or customer relationships.

Does UCP work on mobile?

Yes, it powers experiences in the Gemini app, which is mobile-focused.

What UCP ‘serendipitous’ shopping?

The AI can find the perfect product for a user. This is true even if they didn’t explicitly search for it by name.

How do I enable UCP on Shopify?

Shopify has integrated the technology, so merchants should check their platform updates for “agentic” features

What is the NRF?

The National Retail Federation, where this announcement was made at their annual “Big Show” in New York.