Show HN: I built remembered checkout for Voice calls

Ringup is a developer-built tool designed to streamline payments within voice call interfaces. The system allows consumers to store card information once, enabling seamless transactions across various merchants without repeated data entry during calls.

The project operates on the premise that Voice AI adoption will trigger a surge in phone-based commerce. By removing friction from verbal payment processes, the tool aims to support merchants in integrating direct processor connections for voice-driven sales.

This development highlights the growing infrastructure layer required for AI agents to handle financial tasks. As voice interfaces become more prevalent, specialized payment protocols like Ringup may become essential for secure and efficient agent-to-merchant interactions.

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