Circle

USDC is the default settlement currency of agent payments.

Payments Infrax402AP24 services ▸

What Circle offers

Circle Gateway Nanopayments

Gas-free USDC transfers as small as $0.000001 for high-frequency machine-to-machine payment flows

Agent Wallets

Policy-controlled wallets agents use to hold, send, and manage USDC autonomously within guardrails

Agent Marketplace

Directory where agents discover paid endpoints and pay other agents and APIs in USDC

USDC on x402 / AP2

Native USDC settlement plumbed into x402 and Google's AP2/A2A protocols for agent commerce