Coinbase's Agentic Wallets have processed 50 million machine-to-machine transactions since late 2025.
50 million. In under 6 months.
AI agents are already paying each other. Not in a proof of concept. In production.
The infrastructure: x402 — an implementation of the HTTP 402 "Payment Required" standard that's been sitting dormant in the internet's protocol stack since 1991. Backed now by Cloudflare, Circle, AWS, and Stripe. An agent sends a request. The server requires payment. The agent pays in stablecoin. The service renders. All in milliseconds, without a human in the loop.
Here's what most people miss about the economics of AI agent payments:
Human payment: average transaction $50 , low frequency, high fraud risk.
AI agent payment: average transaction fractions of a cent, extremely high frequency, zero fraud.
Card networks can't handle fractions-of-a-cent transactions. Their economics don't work below approximately $0.10 per transaction. Stablecoins settle at any denomination, any frequency, any amount.
The default payment layer for the agentic economy will be stablecoins. Not because anyone decided it. Because the transaction math leaves no other option.
We're building Ribbit's x402 layer for the same reason. Every AI agent needs a payment primitive. We're building the one that doesn't require a human in the loop.
The first 50 million machine transactions just happened. The next 50 billion are a matter of infrastructure.