circle's x402 protocol hit 140m transactions in 9 months at $0.31 average size. that's 518k daily micropayments in the range where stripe loses money and visa's interchange model breaks. coinbase just bundled x402 into AgentPay as a co-equal rail next to stripe and visa. same week grayscale adds 6 AI agent tokens to their consideration list. circle doesn't need to monetize x402 directly. every transaction settles in USDC. entrench USDC as the agent economy's reserve currency, earn yield on the float backing it. it's the paypal playbook from 2002. the trade: buy the protocols that will drive volume through this rail. NEAR has a live GPU marketplace, NVIDIA inception partnership, native USDC integration, and agent framework already operational. virtuals protocol and kaito are both on grayscale's list building agent-to-agent services that settle through x402. grayscale filed LINK and TAO S-1s within 4 months of consideration list inclusion. if virtuals or kaito get a product in Q3, that's $50-100m in inflows funding agent deployment which feeds directly back into x402 transaction volume. you don't buy the payment rail. you buy what generates the transactions.