ACP & UCP: The new protocols that will change online retail forever

28.02.2026
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Yuri Makarenko
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7 min

AI assistants like ChatGPT, Gemini, and Perplexity are no longer just answer machines. They are becoming shoppers. This is the driving force behind two new technology standards that will redefine the foundation of digital commerce in 2025 and 2026: the Agentic Commerce Protocol (ACP) and the Universal Commerce Protocol (UCP). Those who know and understand these protocols are already one decisive step ahead of the competition.

The essentials at a glance

ACP (Agentic Commerce Protocol) is OpenAI's interface that enables direct purchases within ChatGPT, already live in the US with Shopify and Etsy merchants.

UCP (Universal Commerce Protocol)
is Google's open industry standard, co-developed with Shopify, Walmart, Visa, Mastercard, and 20+ other partners, also rolling out in the US since January 2026. Both protocols allow AI agents to independently search for, compare, and purchase products—without users ever needing to open a browser or shop. A gradual rollout for Switzerland is expected starting in late 2026.

Those who act now—using structured data, a GEO strategy, and a clean technical foundation—will gain a clear advantage over the competition.

What is Agentic Commerce—and why is it happening now?

Imagine asking ChatGPT: "Buy me a birthday gift for my mother, under 80 francs, delivery by Friday." The AI searches, compares, selects, and places the order. No browser tabs, no checkout process, no searching for the cheapest provider.

This is agentic commerce: AI agents that make purchasing decisions and complete transactions independently on behalf of users. What sounds like science fiction is already a reality today, at least in the US. And the technical infrastructure behind it is called ACP and UCP.

ACP: OpenAI's answer to the new shopping era

The Agentic Commerce Protocol (ACP) is OpenAI's technical interface that enables direct purchases within ChatGPT. Developed in collaboration with Stripe and initial retail partners, ACP allows AI agents and online shop backend systems to communicate efficiently and complete orders in real time.

Crucial for merchants: Integration works without major interventions in existing shop systems. If you already use Stripe, you can activate ACP with a single line of code. Even without Stripe, connection is possible via the protocol's open payment standard. Existing checkout processes remain intact; ChatGPT simply passes on order and payment data.

Over 800 million people use ChatGPT every week. Merchants who are discoverable and purchasable via ACP are tapping into a new sales channel with enormous potential.

UCP: Google's open standard for the entire industry

Just a few months later, in January 2026 at the National Retail Federation Conference (NRF) in New York, Google followed up with an even bigger move: the Universal Commerce Protocol (UCP).

UCP is an open standard developed by Google in collaboration with Shopify, Walmart, Target, Etsy, Wayfair, and over 20 other global partners. Endorsements came from Stripe, Mastercard, Visa, American Express, Zalando, and Best Buy, among others. This makes UCP not a proprietary Google product, but an industry standard comparable to what HTTP meant for the web.

What UCP actually does

UCP creates a common language for AI agents, online merchants, and payment providers. Instead of every platform having to build its own custom connection with every shop (the N×N problem), UCP offers a single integration point for all interfaces.

The protocol covers the entire customer journey, from product discovery and checkout to order management and post-purchase experiences. It is compatible with existing industry standards:

Protocol Function
MCP (Model Context Protocol) Connects product catalogs with AI agents
A2A (Agent2Agent) Enables AI-to-AI communication and task delegation
AP2 (Agent Payments Protocol) Cryptographically secures payment authorizations

Security by design

Every transaction via UCP requires active user confirmation. Payment authorizations are secured by cryptographic proof of user consent. Merchants receive only relevant shipping data, never full payment information. This builds trust on all sides.

ACP vs. UCP: What is the difference?

Although both protocols share the same goal of enabling AI-powered transactions, there are key differences:

ACP (OpenAI) UCP (Google/Shopify)
Origin OpenAI + Stripe Google + Shopify + 20+ partners
Type Proprietary (with open components) Fully open source
Focus ChatGPT integration Cross-platform (Gemini, Google Search, AI Mode)
Adoption Etsy, Shopify merchants Walmart, Target, Zalando, and many more
Status (2026) Live in the US US rollout, global expansion in preparation

In the medium term, both protocols will coexist, and merchants active on both will achieve the greatest reach.

When is this coming to Switzerland?

Currently, ACP and UCP are primarily available in the US. A global rollout is planned, but specific timelines for Switzerland and the DACH region have not yet been announced. Based on the expansion pace of Shopify and Google, it is realistic to expect a gradual rollout in Switzerland starting from late 2026, potentially earlier for larger platforms.

For Swiss companies, this means: Now is the time to prepare, not to wait. Those who lay the technical foundations while everyone else is still asleep will be months ahead of the competition.

What does this mean for your online visibility?

When AI agents make purchasing decisions, Google rankings are no longer the only factor determining who sells products. AI systems independently choose which products to recommend and purchase. This fundamentally changes the rules of visibility.

Structured data is the new SEO. AI agents read product data programmatically. Anyone with unstructured, incomplete, or outdated product information is effectively invisible to these agents. Specifically, this means:

  • Schema.org markups consistently implemented (Product, Offer, AggregateRating, InStock)
  • Keep prices, inventory levels, and delivery times updated in real time
  • Write clear, semantically rich product descriptions
  • Prepare return, shipping, and warranty policies in a machine-readable format
  • Prominently integrate reviews and trust signals

This isn't a new type of SEO; it's an evolution of it. Traditional search engine optimization remains the foundation. Added to this is optimization for AI systems and agents, which is what we refer to as GEO (Generative Engine Optimization) .

The strategic challenge: visibility on two levels

A year ago, you "only" had to rank well on Google. Today, you need visibility in both search engines and AI systems, and tomorrow, products will need to be discoverable, vetted, and purchased by autonomous agents. These are three distinct optimization logics that must run in parallel.

For many companies, this is truly overwhelming. Technical SEO structures, GEO strategies, API integrations, structured data maintenance, and monitoring across multiple platforms—this is hardly something you can build on the side.

This is exactly why working with an experienced SEO agency makes more sense than ever before. Not because traditional SEO is dying, but because the requirements are becoming significantly more complex. An SEO agency in Switzerlandthat also operates as an AI agency and GEO agency understands every layer of this development and can provide targeted help in laying the right technical and content-related foundations early on.

What you should do now

Even though ACP and UCP are not yet fully available in Switzerland, there are concrete steps you can take today that are already paying off:

  1. Establish a technical foundation Check whether your shop system (Shopify, WooCommerce, Magento, etc.) is prepared for an ACP/UCP integration. Clean API structures and well-maintained product data are the prerequisites.
  2. Implement structured data completely Schema markups for products, prices, availability, and reviews must be current and complete. This improves traditional SEO while simultaneously preparing you for agent-based systems.
  3. Develop a GEO strategy Create content that addresses common user questions and is classified as trustworthy by AI systems. What ChatGPT, Gemini, or Perplexity recommends today will be the starting point for agent decisions tomorrow.
  4. Set up monitoring Observe how your products and brand appear in AI responses. This type of monitoring is new and requires different tools than traditional SEO tracking.

Conclusion: The infrastructure for tomorrow is being built today

ACP and UCP are not distant future technologies. They exist, they are scaling, and they will change digital commerce as profoundly as the introduction of Google Shopping once did. Morgan Stanley estimates that agent-driven shopping will account for between $190 billion and $385 billion of US e-commerce revenue by 2030.

The question is not whether this development will reach Switzerland, but when. And whether your company will be ready when it does.

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