AI agents executed over 138 million transactions through Coinbase's x402 protocol in the past year, using cryptocurrency to purchase data, computing resources and access to AI models. Chainalysis' analysis found that 88.1% of geographically identifiable payments for AI model inference originated from U.S.-linked wallets, while Chinese-linked wallets accounted for just 0.1% of such transactions. More than 87% of x402 payments were valued at 10 cents or less, highlighting stablecoins' suitability for micropayments and raising questions about the sustainability of commercial demand.

The protocol, incubated by Coinbase, enables autonomous software to settle payments without human oversight, allowing AI systems to acquire services such as data feeds, cloud computing and model hosting. Visa, Mastercard, Stripe and other payment processors have endorsed x402, and Coinbase now permits business customers to accept payments from AI agents. Yat Siu, chairman of Animoca Brands, projects that up to 100 billion AI agents could transact on the internet within the next few years, with stablecoins serving as the primary payment mechanism for these interactions.

Transaction volumes remain modest; in July, x402 processed roughly 75 million payments totaling $24 million over 30 days. The average time between a wallet receiving funds and its first x402 payment fell from 73 days in late 2025 to 18 minutes in the third quarter of 2026. Chinese-linked wallets dominated payments for security and code‑analysis services, particularly for a platform named AgentLisa, though analysts cautioned against interpreting this as evidence of market erosion.

The data reflect identifiable transactions on x402 rather than the full scope of global AI‑related on‑chain activity. Nonetheless, the findings indicate that autonomous software is beginning to establish distinct spending patterns, with the United States currently leading the market for paid AI services.