Commerce has evolved from the exchange of goods to global e-commerce. But now we find ourselves at a new turning point: the evolution towards a model where artificial intelligence agents can buy for us —not just recommend products, but complete the entire purchasing process. This is what drives the Universal Commerce Protocol (UCP), an open standard designed to make this new paradigm possible, which is already being called agentic commerce.

UCP: a common language for trade with AI

The Universal Commerce Protocol (UCP) is an open standard co-developed by Google, Shopify, Etsy, Target, Wayfair, Walmart, and many other players in the global commerce and payments ecosystem. The goal is simple yet ambitious: to offer a common language for AI agents, platforms, and merchants to interact to complete end-to-end purchases —from discovery through to payment and post-purchase support— without case-specific integrations.

Unlike traditional integrations, where each e-commerce must build custom connectors with every channel, the UCP offers a unified and extensible framework. This includes modular support for product discovery, shopping cart and checkout, order management, and after-sales assistance, and it can be extended to features like loyalty programmes, discounts, or subscriptions.

From traditional e-commerce to agentic commerce

With agentic commerce, users no longer need to physically or manually browse a website or app to buy. Instead, an AI agent can act on behalf of the user, searching, comparing, and executing transactions in an automated and personalised way.

These agents can operate in environments such as:

• AI search modes (e.g., AI Mode from Google Search).

• Assistents like Gemini, ChatGPT, or Copilot.

• Conversational interfaces or those integrated into third-party applications.

The protocol allows these agents to dynamically negotiate with the merchant based on compatible capabilities, accepted payments, and user preferences.

 Why is it relevant now?

The launch of UCP has been backed by more than 20 retail and payments organisations, including leaders like Visa, Mastercard, Stripe, PayPal, Walmart, Target, The Home Depot, and Zalando. This level of support indicates that this is not a laboratory experiment, but a movement towards an AI-based commerce ecosystem on a global scale.

Additionally, Google is implementing UCP features directly into its search surfaces and assistants, enabling consumers to complete purchases within the search experience itself, representing a revolution compared to the traditional model of redirecting to a different website to pay. Shopify, as a co-developer of the standard, already provides more details and applied examples here.

What changes for businesses?

1. The web ceases to be just an interface
   The product page and the checkout process are no longer just for humans. They must now be interoperable with programmatic agents; data must be structured, machine-readable, and negotiable.

2. Value is no longer just in the funnel
   The value of digital channels shifts from attracting sessions and clicks to enabling AI-compatible transactions. This represents a radical change: KPIs are no longer just about traffic or conversion and move towards agent experience ratings and transactional capability.

3. Loyalty and data
   In an environment where the agent acts as an intermediary, businesses must rethink how they retain the relationship with the buyer, data, and loyalty.
   How is the relationship maintained if it is the agent managing the exchange? By aligning data and experience strategies to ensure brand value remains alive.

Consequences for channels and marketing

This movement transforms the nature of:

• SEO and visibility: it is no longer about positioning pages, but ensuring compatibility with the UCP.

• Traffic acquisition: the agent does not follow the funnel.

• First-class data: preparing structured product data is key to being eligible for agents.

• Experience evaluation: trust and policy factors (e.g., returns, shipping, etc.) become decisive for UCP compatibility.

Risks and challenges

Although the UCP offers interoperability, non-trivial challenges arise:

• Data control and privacy.

• Position of dependency on external agents.

• Displacement of the direct relationship with the customer.

• Rethinking loyalty and branding.

These issues are widely debated, as they shift the balance of power between platforms and traditional sellers.

Where is the industry heading?

The collaboration between Google and Shopify is not an experiment: it is an architecture for the future. Some analysts and forums refer to UCP as the "Stripe moment for AI commerce", a turning point that reconfigures digital transactions.

Technology is evolving rapidly, and what is currently proposed as agentic commerce could become the dominant infrastructure of the next decade.

In conclusion, what should a business do today?

We are facing a key moment to review the digital ecosystem of businesses. Not only to anticipate the future, but to adapt to dynamics that are already redefining customer relationships and purchasing processes.

From the perspective of RocaSalvatella, this new scenario demands an immediate strategic review in four key areas:

1. Audit the data readiness of your offering to be accessible to agents.

2. Agent-centric information and customer relationship strategy.

3. Review checkout structures and APIs for UCP compatibility.

4. Rethink KPIs and digital channels to include agentic commerce.

The game has changed, and those who adapt first will have the advantage.