Circle has officially launched Nanopayments on mainnet, introducing a gas-free payment system built around USDC for artificial intelligence agents, APIs, and machine-driven commerce. The new infrastructure is designed to support extremely small digital transactions while improving transaction speed and efficiency across blockchain networks.
According to details shared in the company’s announcement, the platform enables USDC transfers as small as $0.000001 with near-instant verification. Transactions settle across multiple blockchain ecosystems, including Arbitrum, Avalanche, Base, Ethereum, HyperEVM, Optimism, Polygon PoS, Sei, Sonic, Unichain, and World Chain.
The launch represents Circle’s latest effort to expand blockchain payment infrastructure beyond traditional peer-to-peer transfers and into automated digital economies driven by software agents and machine-to-machine interactions.
Circle’s Nanopayments platform enables gas-free USDC transactions as small as one-millionth of a dollar with near-instant verification across multiple blockchain networks.
Built for AI Agents and Automated Transactions
Nanopayments was developed on top of Circle Gateway, the company’s unified liquidity infrastructure layer. The system allows users to deposit USDC into non-custodial smart contracts and authorize transactions through EIP-3009 signature standards.
Instead of settling every payment individually on-chain in real time, the platform verifies and deducts each transaction immediately before batching settlements together for blockchain processing. This structure enables merchants and service providers to deliver digital goods or services within milliseconds of payment authorization rather than waiting for traditional blockchain confirmation times.
Nanopayments powered by @circle Gateway is live on mainnet. Quicknode is a day-one launch partner.
Gas-free @USDC down to $0.000001 with instant verification. Batched settlement. Live on @base, @0xPolygon, @arbitrum, @HyperliquidX and more.
The financial rail for the agent…
— Quicknode (@Quicknode) April 29, 2026
The infrastructure specifically targets the growing agentic economy, where autonomous software agents may conduct payments continuously for activities such as API usage, data access, computing resources, or time-based services. Circle indicated that future digital economies are expected to rely heavily on automated microtransactions between machines, applications, and artificial intelligence systems.
The company referenced research suggesting that agent-driven commerce could generate trillions of dollars in economic activity over the next several years as AI adoption expands across industries.
x402 Integration Expands Payment Ecosystem
Nanopayments is being integrated alongside Circle’s x402 payment protocol, a standard introduced earlier this year to support internet-native payment flows. Circle stated that the x402 framework has already processed more than $100 million in transaction volume since launch.
Rather than replacing the existing protocol, Nanopayments adds gas-free transaction economics to current x402 payment systems. This integration is intended to improve cost efficiency for applications requiring high-frequency or ultra-small payments that would otherwise become impractical due to blockchain transaction fees.
The platform combines off-chain verification with batched on-chain settlement, allowing services to respond within milliseconds instead of waiting for full blockchain confirmation.
Several infrastructure and blockchain service providers have already integrated the technology into production environments. Early adopters include Alchemy, Goldsky, and QuickNode.
Industry analysts noted that scalable micropayment systems are becoming increasingly important as AI-powered services and machine-to-machine interactions expand. Traditional payment rails often struggle to support high-frequency transactions involving very small monetary amounts because processing fees can exceed the transaction value itself.
Stablecoin Infrastructure Evolves for Machine Economies
Circle’s broader strategy appears focused on positioning USDC as foundational infrastructure for emerging digital commerce ecosystems. The company has steadily expanded its stablecoin payment tools to support cross-border transfers, enterprise settlement, developer integrations, and automated financial applications.
The launch positions USDC infrastructure for the emerging agentic economy, where autonomous software systems conduct continuous low-cost digital transactions.
The mainnet release follows an earlier testnet rollout of Nanopayments and marks another step in Circle’s effort to develop infrastructure tailored for AI-powered financial systems. As blockchain networks increasingly intersect with artificial intelligence and automation technologies, payment providers are racing to build scalable transaction models capable of supporting machine-native commerce on a global scale.
