Universal Commerce Protocol

Definition

Open standard for agentic-commerce co-developed by Google and industry partners. Provides common language for AI agents to discover products and execute purchases directly on merchant backends.

Key Points

• 2026-09-14: worldline launches Global Collect payment handler for UCP — universal adaptor bridging agentic platforms and merchant payment backends (2026-09-14-worldline-agentic-ai-primary)
• Merchants expose /.well-known/ucp profile declaring supported payment handlers and instruments
• Supports card, redirect (iDEAL/WERO, PayPal), and mobile wallet (Google Pay, Apple Pay) flows
• Enables single integration across multiple UCP-connected AI platforms (Gemini, AI Mode in Search)
• Checkout completion maps to Worldline POST /v1/{merchantId}/payments

Related

• worldline
• agentic-commerce
• agentic-ai-payments
• google

Sources

• 2026-09-14-worldline-agentic-ai-primary