Coinbase CEO Brian Armstrong has expressed optimism that stablecoins and artificial intelligence will transform how consumers pay for digital content, challenging the dominance of subscription-based business models across the internet.
Micropayments and the x402 protocol
Armstrong suggested on X that the combination of stablecoins and the emerging x402 payment protocol offers improved flexibility for both businesses and consumers when it comes to micropayments for online content.
He highlighted that stablecoins and x402 can enable companies to collect small, usage-based payments and streamline the digital checkout experience.
Stablecoins and x402 enable businesses to accept micropayments for usage and decrease friction at checkout.
Focusing on the online news industry, Armstrong argued the new approach could allow readers to pay only for what they consume, rather than being forced into monthly subscription plans just to access a single article.
He envisioned a future where an AI-powered agent could automatically retrieve an article on behalf of a user and pay the publisher only for that specific piece of content, provided the user has granted consent for these payments.
What is x402?
The x402 technology underpinning Armstrong’s proposal is an open payment protocol introduced by Coinbase in May 2025. The protocol draws its name from the HTTP 402 status code, which refers to “Payment Required.”
Although HTTP 402 has existed since the early days of web standards, it has never been widely implemented for actual payment operations.
Coinbase launched x402 to activate this dormant feature, turning it into an automated payment standard that allows websites, applications, and AI agents to negotiate and authorize transactions.
Mini dictionary: x402 protocol – An open payment protocol created by Coinbase, based on the HTTP 402 Payment Required status code, enabling automated micropayments between AI agents, websites, and applications using digital assets like stablecoins.
A typical example might involve a user wanting an AI assistant to acquire a news article costing $0.25. With x402, the assistant can automatically receive a payment request from the publisher and, with permission, authorize a stablecoin transfer for that precise amount—eliminating the need for a full subscription.
Growing adoption by tech companies
Momentum for AI-driven payment solutions is gaining traction. In June, Coinbase and Amazon Web Services collaborated to allow AWS CloudFront and Web Application Firewall customers—typically online publishers—to monetize requests from AI agents utilizing the x402 protocol.
In a separate development, Cloudflare, a leading internet infrastructure provider, unveiled its Monetization Gateway in closed beta in September. This product now lets participating businesses request payments from AI agents for access to digital resources—including websites, datasets, and application programming interfaces—using the x402 standard.
Armstrong remains confident that as more companies support x402, the way in which people access and pay for digital content could see significant changes, particularly in the context of news, datasets, and pay-per-use services.
