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Circle (NYSE:CRCL) has activated its Nanopayments solution on mainnet, powered by Circle Gateway. The system is designed for the emerging agentic economy, where autonomous software agents, APIs, and machine-driven systems execute frequent, low-value transactions.
Nanopayments supports USDC transfers as small as $0.000001 without gas fees, aiming to remove barriers that have limited sub-cent digital commerce. The solution targets a key constraint of traditional payment rails—fixed costs and delays—and of standard blockchain transfers, which require gas fees for each operation and can make high-volume, low-value activity uneconomical.
For transactions measured in fractions of a cent, conventional payment methods can be inefficient due to fixed costs and processing latency. On-chain transfers also face per-operation gas fees, which quickly outweigh the value of tiny payments in high-frequency scenarios.
Nanopayments provides a dedicated payment rail optimized for interoperability and efficiency. It builds on Circle Gateway’s unified liquidity approach, enabling developers to deposit USDC into non-custodial smart contracts.
Developers can access pooled balances across multiple networks with near-instant availability—typically under 500 milliseconds—while batching numerous small transfers for eventual on-chain settlement.
A highlighted feature is instant verification. Merchants and service providers can confirm authorization and deliver value (such as data, compute resources, or content) within hundreds of milliseconds. This decouples fast agent or user experiences from final blockchain confirmation, while maintaining security through batched settlements.
The flow is designed to preserve user control. An agent or user first deposits USDC into the Gateway contract. When requesting a resource, the merchant responds with payment requirements (often via HTTP 402). The agent then signs an EIP-3009 authorization. After submission, the system verifies the signature and sufficient balance, deducts the amount immediately, and confirms success while managing underlying blockchain operations in the background.
Circle says the setup integrates with existing standards such as x402, functioning as a complementary option rather than a full replacement.
Analysts project that agent-driven commerce could generate trillions in value by the end of the decade. Early adoption of protocols like x402 is cited as evidence of demand: x402 has facilitated over $100 million in payments shortly after launch.
Nanopayments mainnet availability spans 11 EVM-compatible chains: Arbitrum, Avalanche, Base, Ethereum, HyperEVM, Optimism, Polygon PoS, Sei, Sonic, Unichain, and World Chain. Circle says this coverage is intended to deliver consistent cross-chain experiences and unified liquidity for builders.
Several projects have begun integrating the technology in live environments, including AIsa, AgentCard, Alchemy, Arrays, blockrun.ai, Goldsky, Meridian, and QuickNode.
Circle positions Nanopayments for use cases that require rapid, granular payments, including:
By reducing friction around cost, speed, and scale for tiny transactions, Nanopayments is presented as infrastructure for programmable, high-frequency economic activity in an AI-driven future.
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