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Endigest AI Core Summary
Google announced major updates to Google Pay at I/O 2026 designed for agentic commerce and improved checkout experiences.
•Universal Commerce Protocol (UCP) enables AI-powered shopping using existing Google Pay infrastructure and payment service provider relationships
•Google Pay & Wallet Developer MCP server (Public Preview) allows AI agents to manage integrations, troubleshoot errors, and generate code
•Android checkout now supports dynamic callbacks (onPaymentAuthorized, onPaymentDataChanged) for 1-click Express checkout with address-based shipping and tax calculations
•New cardFundingSource signal indicates card type (Credit, Debit, Prepaid) enabling dynamic discounts and surcharges