Since the advent of ChatGPT and chatbots, artificial intelligence (AI) hype has morphed into “agent payments,” hailed as the next wave of internet commerce that eliminates the need for humans to conduct transactions.
AI Agents Will Pay Each Other: The idea is simple: use AI agents to build automated payment rails that traditional companies like credit card companies struggle with.
Talk about agent payments is only growing, with crypto CEOs like Brian Armstrong and CZ hyping AI agents and McKinsey saying AI agents could mediate $3 trillion to $5 trillion in global consumer commerce by 2030.
This is where x402 comes into play, a proxy payments protocol backed by consortiums like Coinbase. The idea is ambitious: embed payments via stablecoins directly into the communications layer of the internet, so that software can automatically charge other software.
Supporters of x402 believe the protocol could enable new types of Internet businesses built around small, automated payments. Traditional payment methods like credit card networks are designed for human commerce, not thousands of sub-cent payments between software services.
“Incumbent payment processors will find it difficult to accommodate these merchants,” said Noah Levine, partner at a16z crypto. “Not because of a lack of technology, but because when a processor says ‘yes’ to a merchant, it takes on that merchant’s risk.”
Take, for example, the scenario Levine proposed: An AI agent with a human responsible for completing the research might call a specialized API tens of thousands of times. Each request may cost a few cents.
In a week, these calls might generate $40 in revenue for the developer running the service. Credit card companies have trouble dealing with these small payments and merchants because they can’t verify them.
“Processors reject applicants they can’t underwrite. Tools that have no website, no bricks and mortar, and no track record are extremely difficult to underwrite,” Levine added.
On top of that, the processing fees alone can exceed these small payments, and payment processors often require intermediaries and operational history before approving merchant accounts.
X402 can solve this problem by making proxy payments through stablecoins.
Even the name x402 itself hints at the ambition of the project. It references HTTP 402 – “Payment Required” – a status code reserved in the early days of the Internet so that future payments could be built directly into network requests. This vision has never been realized in traditional networks, and x402 proponents believe that encrypted rails can finally make it possible.
The problem, however, is that the technology is still in its early stages and has yet to be translated into on-chain use.
“Mainly a mirage”
Artemis’ on-chain analysis shows that approximately half of observed x402 transactions reflect artificial activity, calling it “gamification” activity rather than true business activity.
“The x402 ‘proxy payments’ craze remains a mirage,” Artemis analysts wrote on X in February.
The most recent daily snapshot shows that approximately 131,000 transactions generated approximately $28,000 in transaction volume, with an average payment value of approximately $0.20.
The network has recorded more dramatic bursts of activity, with one day in February recording 3.8 million transactions and roughly $2 million in volume. But on-chain analysts at Artemis say much of this growth is due to infrastructure testing and experimental use.
Artemis divides these “game” transactions into two categories: self-transactions, where the same wallet acts as both buyer and seller, and wash transactions, where the seller funds the buyer’s wallet and then the buyer returns the money immediately after the transaction.
In other words, much of the traffic running over the protocol today does not yet resemble commerce.
However, in the early stages of network testing, such transactions are to be expected. “As teams move from testing to production and start serving real users, these percentages naturally decline,” Artemis said.
Erik Reppel, head of developer platform engineering at Coinbase and founder of x402, told CoinDesk: “Open standards like x402 are designed to be permissionless and open, which means no one entity can manage every interaction, just like no one ‘controls’ every computer using HTTP. Of course, this means people will sometimes experiment with the system in unexpected ways.”
A $7 billion ecosystem?
This gap between real and “game” trading can make the ecosystem seem mundane at first glance.
Looking at the total market cap of the entire ecosystem (the total value of all tokens and projects built within the network, not to be confused with the total market cap of the network’s tokens, as x402’s token does not exist), which is currently around $7 billion, seems out of sync with the daily payment volume of around $28,000.
Given this disparity, some may even be prepared to dismiss this argument as wishful thinking, a bit like past crypto games with huge valuations but few users.
But CoinGecko’s category shouldn’t be taken at face value, as it includes Chainlink’s LINK token, which has a market cap of $6.3 billion. LINK is not a pure x402 asset.
While Chainlink supports the protocol through integrations such as the Chainlink runtime environment, LINK predates x402 and plays a broader role in other crypto infrastructure. Including it in this category artificially inflates it and sets expectations too high for such a new protocol.
Is it still early?
While adjusting for the huge contribution of LINK token market capitalization, the ecosystem may look closer to the reality of transactions, but the core challenge remains: the merchants x402 is designed to serve are still very few.
The x402 protocol is not trying to replace bank cards or traditional payment systems. Instead, it targets a new category of digital commerce—small, automated services used by artificial intelligence agents and software systems.
As AI tools make it easier to build and launch software, more and more developers are creating small, single-purpose services — data sources, image processors, code testing tools — that are designed to be used not by humans but by other software.
This takes time.
“At its core is the micropayments rail,” Artemis analysts said. “Its real utility comes at small transaction sizes, powering capabilities such as pay-per-use APIs, content generation and agent orchestration.
However, for now, at this stage of this new agency trade, these merchants remain few and far between.
Early attempts at similar ideas in the crypto space have struggled to gain traction. Micropayment system related to Lightning Network, browser monetization model Ecosystems and various decentralized computing markets promise a new internet economy but often fail to attract sustained real-world usage.
The narrative around agency commerce is growing faster than the usage that justifies it. The disparity between the protocol’s ecosystem size and its roughly $28,000 daily payment volume suggests that the infrastructure for proxy payments is arriving first, but the economy it supports may take longer to develop.
However, the vision behind x402 – an internet where AI agents seamlessly pay each other via stablecoins – remains compelling. “We’re likely overestimating how quickly agency commerce will grow next year, but we’re largely underestimating how quickly it will grow in five years,” the Artemis analyst said.
“When the agency business comes, you either adopt the standard or you’re left behind.”
