Why crypto bulls think AI agents will make stablecoins the default payment layer

Your AI just made several payments while you read that headline. You approved none of them. Visa processed none of them. And if the crypto industry’s biggest bulls are right, that’s not a bug — it’s the entire future of the internet economy.

Coinbase founder Brian Armstrong thinks there will soon be more AI agents than humans making transactions on the internet. Binance founder Changpeng Zhao went further, predicting agents will make one million times more payments than people, all in crypto. The posts landed on the same day last week and lit up crypto X.

The core argument is structural.

AI agents can’t open bank accounts because banks require identity verification that software cannot provide, whereas a crypto wallet only needs a private key. No KYC, no compliance review, no waiting — and that asymmetry is what Armstrong was pointing at.

But the wallet problem is only half the picture. The other half is economics.

Agents don’t shop the way humans do. When an AI agent is executing a task — such as researching a topic, coordinating a supply chain, building a report — it might call dozens of specialized APIs in a single session.

Each call might be worth fractions of a cent, where it pays for GPU compute time, real-time data feeds, web scraping services, or hiring a sub-agent to handle translation. None of these transactions resembles anything Visa or Mastercard was designed to process.

Consider, for a moment, that this story was written by an agent, requested by a “chief” agent at CoinDesk tasked with increasing the site’s authority.

To produce it, that agent would have queried a real-time news API to verify Armstrong’s tweet ($0.002), pulled onchain data to search for volume figures ($0.004), cross-referenced press releases ($0.001), and pinged a financial context model for Visa protocol details ($0.003). It would finally generate the article at an additional cost, paying credits to another AI tool to actually write the piece.

The total cost of reporting is under two cents with six transactions, at the current figures offered by protocols such as x402.

In contrast, Stripe’s minimum processing fee on a single transaction is around $0.30. Running those six payments through a card network would cost more than 100 times the value of the payments themselves.

A human editor reviewing and publishing the piece might then be billed by a sub-agent that handled SEO optimization, another that ran plagiarism checks, and another that formatted for CMS software. Each micropayment is economically absurd on card rails, but trivial onchain.

This is the thesis behind x402, Coinbase’s open payment protocol that embeds stablecoin payments directly into HTTP requests — so an agent can hit a paywall, pay in USDC, and continue its task in the same interaction, no human required. Cloudflare, Circle, AWS, and Stripe are all backing it. Google’s open agent payments standard includes x402 as a settlement layer.

Every industry with high-frequency, low-value data exchange becomes a candidate.

In healthcare, an agent managing a patient’s insurance claim pays per document retrieved from a medical records API. In logistics, a procurement agent auctions freight slots across dozens of carriers in real time, settling the winning bid instantly. In the media, AI crawlers pay per article indexed rather than negotiating bulk licensing deals. In finance, a trading agent pays a specialist model fractions of a cent per risk signal consumed.

A caveat, however, is that the infrastructure is ahead of the demand.

CoinDesk reported this week that x402 currently processes around $28,000 in daily volume, with Artemis flagging roughly half of observed transactions as artificial activity rather than real commerce. The merchants x402 was built to serve are still rare.

Meanwhile, traditional finance is not standing still. Visa launched its Trusted Agent Protocol last October, and Mastercard completed Europe’s first live AI-agent bank payment inside Santander’s regulated infrastructure last week — both on existing card rails with cryptographic verification layered on top.

The most likely outcome is a split, where regulated commerce stays on card rails, while machine-to-machine payments — such as agents hiring agents, paying per API call, buying compute on demand — migrate to stablecoins because the economics demand it.

The open question is which bucket ends up bigger.