Evaluating The Future of Internet Payment Protocols

Key Insights:

• The original internet protocols (e.g., HTTP, TCP/IP) enable data exchange but lack built-in mechanisms for sending and settling value. As a result, payments rely on centralized intermediaries that introduce cost, latency, and compliance friction.
• Current systems rely on human input at most steps, limiting automation opportunities. Existing internet protocols must be improved so autonomous agents can handle payments end-to-end.
• Stablecoins provide the flexibility and programmability needed to support digital payments at internet scale for both humans and agents. They are already being used for peer-to-peer payments, remittances, and commerce.
• Internet-native payments materialize into four layers: application, coordination, routing, and settlement. While application, routing, and settlement layers are well-populated, coordination remains underdeveloped. X402, an internet-native payment protocol, addresses this by standardizing how agents negotiate and authorize payments.

The Internet's Architectural Gap