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


Your AI just made several payments while you read that headline. You didn’t approve any of them. Visa did not process any of them. And if the cryptocurrency industry’s biggest bulls are right, that’s not a mistake: it’s the entire future of the internet economy.

Coinbase founder Brian Armstrong believes there will soon be more AI agents than humans transacting on the Internet. Binance founder Changpeng Zhao went further and predicted that agents will make a million times more payments than people, all in cryptocurrency. The posts arrived on the same day last week and illuminated the X crypto.

The central argument is structural.

AI agents cannot open bank accounts because banks require identity verification that the software cannot provide, while a crypto wallet only needs a private key. No KYC, no compliance review, no waiting, and that asymmetry is what Armstrong was aiming for.

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

Agents don’t buy like humans do. When an AI agent executes a task (such as researching a topic, coordinating a supply chain, or producing a report), it can call dozens of specialized APIs in a single session.

Each call can be worth fractions of a cent, where you pay for GPU compute time, real-time data streaming, web scraping services, or hiring a subagent to handle the translation. None of these transactions are like anything Visa or Mastercard were designed to process.

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

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

The total cost of reporting is less than two cents with six transactions, compared to the current figures offered by protocols such as x402.

(CoinDesk)

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

A sub-agent that handles SEO optimization, another that performs plagiarism checks, and another that formats the CMS software could bill a human editor to review and publish the article. Each micropayment is economically absurd on the cards, but trivial on the chain.

This is the thesis behind x402, Coinbase’s open payment protocol that embeds stablecoin payments directly into HTTP requests, so an agent can access a paywall, pay in USDC, and continue their task in the same interaction, without the need for a human. Cloudflare, Circle, AWS, and Stripe support it. Google’s open agent payments standard includes x402 as a settlement layer.

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

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

However, it must be taken into account that infrastructure is ahead of demand.

CoinDesk reported this week that x402 currently processes around $28,000 in daily volume, with Artemis flagging about half of the observed transactions as artificial activity rather than actual trading. The traders the x402 was created for remain 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 banking payment within Santander’s regulated infrastructure last week, both on existing card rails with crypto verification on top.

The most likely outcome is a split, where regulated commerce remains on card rails, while machine-to-machine payments (such as agents hiring agents, pay per API call, on-demand compute purchasing) migrate to stablecoins because the economics demand it.

The open question is which cube ends up being larger.

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