Coinbase Launches AiFi, Bets on Agent Payments After x402 Volumes Top $100M

Cryptocurrency exchange Coinbase this week launched AiFi, a payment solution for AI agents that lets them autonomously initiate and receive transactions settled in USDC. According to the company, its x402 protocol has processed over $100 million in transaction volume since launching earlier this year—a milestone that sets the stage for AiFi's rollout.

AiFi is built on the x402 standard (based on HTTP 402) and integrates the Model Context Protocol (MCP), enabling AI agents to authorize payments via natural language instructions. Coinbase said the solution will first be available to U.S. merchants, with expansion to other jurisdictions to follow.

As agent payments move from testing to real funds, compliance before settlement becomes a critical step. Coinbase says AiFi includes built-in KYC, KYA (Know Your Agent), and sanctions screening, along with per-transaction and daily cumulative limits to prevent agents from overspending or making erroneous payments within their authorized scope.

Industry observers note that the x402 ecosystem grew rapidly in 2026, with payment giants like Stripe and PayPal also building similar capabilities. Coinbase's move aims to capture the infrastructure entry point for machine-to-machine payments, but fraud detection and liability attribution for agent payments still await standardization.