USDC and x402 AI agent payments could lift stablecoin demand

Coinbase CEO Brian Armstrong says AI agents could drive machine-to-machine commerce at a scale that outspends humans, strengthening the case that crypto is “internet money” for autonomous payments. He argues the market has not fully priced in this “agentic economy,” which could increase demand for digital dollars. Coinbase’s data highlights x402, an open payments standard using the HTTP 402 “Payment Required” flow. In the last 30 days, x402 logged 75.41M transactions and $24.24M in volume, with 94,060 buyers and 22,000 sellers. Coinbase says AI agents use USDC in 99% of x402 transactions, and more than 90% of activity runs on Base. The article adds that agents already use x402 for trading, AI inference, media generation, and storage. The latest update is that major cloud providers are joining the rail: AWS previewed Amazon Bedrock AgentCore Payments with Coinbase and Stripe to enable USDC micropayments via x402 (wallet management, spending limits, audit logs). Stripe also launched x402 payments on Base. Separately, Google Cloud and Solana are building Pay.sh to let stablecoin-funded agents access Gemini and Google Cloud APIs. For traders, the key takeaway is that USDC-linked AI agent payments are turning into measurable transaction volume. If adoption accelerates, USDC on Base could become a near-term narrative driver, with potential longer-term reinforcement of USDC’s role in “machine microtransactions.”