x402 protocol outbreak: volume surges by 10000%, is AI agency payment the new infrastructure of future finance?

The experimental payment protocol x402 launched by a leading CEX in the United States has seen an explosive rise in activity, aiming to enable AI agents and humans to directly use stablecoins for payments over the internet. According to data from Dune Analytics, the protocol's trading volume surged over 10,000% in the past month, processing nearly 500,000 transactions in just one week. x402 has created an instant on-chain payment layer by reviving the HTTP 402 “Payment Required” status code, with a daily transaction amount peaking at $332,000, and is considered the first effective bridge connecting AI systems with blockchain economic activities.

What is the x402 protocol: Reshaping the underlying logic of internet payments

The x402 protocol was launched in May, reimagining the long-unused HTTP 402 status code (“Payment Required”) as the native payment layer of the internet.

Core Mechanism:

• Instant on-chain payments: It supports automatic, real-time transactions without the need for credit cards or intermediaries.
• Payment Process: When a user or AI agent requests a service, a 402 payment prompt will be received, and then a signed stablecoin payment is sent, with the system performing instant verification on-chain.

This revolutionary payment method has caused its volume to surge dramatically:

• Volume skyrocketed: From October 14 to 20, the protocol processed nearly 500,000 transactions, an increase of 10,780% compared to last month.
• Peak Data: Last Friday, the single-day transaction peak reached 239,505 transactions, while last Thursday's trading volume set a historical record of $332,000.

AI Agency Economy: Future Application Scenarios of x402

The sudden emergence of x402 coincides with the increasing attention to “Agentic AI”. Agentic AI refers to autonomous artificial intelligence systems that can manage finances and resources on their own.

The 2025 Crypto Market Report by a16z Crypto highlights the trend of autonomous AI and predicts that by 2030, such agents could drive up to $30 trillion in autonomous trading.

The CEX developers Kevin Leffew and Lincoln Murr explained in August that x402 can enable a new financial layer for digital agents, allowing them to pay for computing, storage, and even transportation costs without human intervention.

“They need atomic payments, programmable strategies, and composable wallets. Ethereum and stablecoins provide them with everything they need.”

The Coexistence of Developer Interest and Security Risks

The framework of x402 has also inspired developers to use its mechanism to issue new tokens. According to industry insiders, this has triggered a wave of x402-driven Memecoin projects.

The strength of this trend has even led major cryptocurrency data platforms to add “x402 tokens” as an independent category, which has expanded its market size to $180 million.

However, while mainstream CEX is rapidly embracing AI, it also faces significant security challenges.

AI coding tool security vulnerabilities

Last month, the AI coding assistant Cursor, widely used by the aforementioned CEX engineers, reportedly exposed a security vulnerability, raising widespread concerns in the cryptocurrency and cybersecurity communities.

• CopyPasta License Attack: This vulnerability is named “CopyPasta License Attack,” which allows hackers to insert hidden Markdown commands in developer files such as README.md and LICENSE.txt, thereby spreading malware through developer files.
• Risk Exposure: Cybersecurity company HiddenLayer demonstrated how this vulnerability can silently inject malicious code, capable of stealing data, creating backdoors, or altering critical systems.

This security disclosure comes as CEX CEO Brian Armstrong announced that AI has currently written up to 40% of the company's code, with plans to increase it to 50%. Critics warn that the CEX's rapid rollout of AI could jeopardize the security of user assets and core infrastructure.

Conclusion

The x402 protocol is rising at an astonishing speed, highlighting the core value of Blockchain as a payment infrastructure in the AI-driven digital economy. If the adoption rate continues to maintain its current speed, x402 is expected to become a key bridge between AI systems and on-chain economic activities. However, the security vulnerabilities brought about by the rapid adoption of AI (such as CopyPasta attacks) also expose the significant challenge for crypto giants to balance technological innovation and system security, which requires ongoing attention from both the industry and regulators.

Disclaimer: This article is for informational purposes only and does not constitute any investment advice. The cryptocurrency market is highly volatile, and investors should make decisions with caution.