[Universal Commerce Protocol (UCP)](https://ucp.dev) is a common language for
platforms, agents, and businesses to enable agentic commerce across
industries---from discovery to checkout and beyond.

Visit [Google UCP Guide](https://developers.google.com/merchant/ucp) to learn
more about adopting UCP to enable agentic actions on AI Mode in Google Search
and Gemini.

## Google Pay payment handler

[Google Pay payment
handler](https://developers.google.com/pay/api/universal-commerce-protocol/google-pay-payment-handler)
enables users and merchants to use Google Pay as a credential provider on
Google AI surfaces like Gemini and AI Mode.