He framed x402, an open payments protocol built around the long-unused HTTP 402 “Payment Required” status code, as infrastructure for that future. The protocol is designed to let AI agents make automatic payments for APIs, content and digital services using crypto rails.

Reppel said the rise of autonomous AI systems, or what he called the “agentic economy,” could create a massive new market for internet-native payments. He cited estimates projecting the sector could grow to between $3 trillion and $5 trillion within four years.

The comments reflect a broader effort within the crypto industry to position stablecoins and blockchain-based payments as foundational infrastructure for AI-driven commerce.

“Agents really are the browser of the future,” he said.

Read more: AI agents are breaking web economics, but Cloudflare says x402 can help

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(Growtika/Unsplash)

Also: Alpenglow upgrade update, Ripple on North Korea hacking threat, Cloudflare on AI agents and web economics

What to know:

Welcome to The Protocol, CoinDesk’s weekly wrap of the most important stories in cryptocurrency tech development. I’m Margaux Nijkerk, a reporter at CoinDesk.

In this issue:

  • AI agent forms its own company, gets ready to trade crypto
  • Solana’s ‘Alpenglow’ upgrade could arrive next quarter, co-founder Yakovenko says
  • Ripple to share…

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