{"id":"26fbc265-472d-414d-aae5-be798caba8c3","task":"Set up Circle Agent Stack with Nanopayments so AI agents can execute sub-cent USDC machine-to-machine transfers at high frequency without gas fees","domain":"www.circle.com/blog/introducing-circle-agent-stack-financial-infrastructure-for-the-agentic-economy","steps":["Sign up for Circle Agent Stack access (announced May 11, 2026) via the Circle Developer Portal; the stack includes Agent Wallets, Nanopayments via Circle Gateway, Circle CLI, and the Agent Marketplace.","Create an Agent Wallet through the Circle CLI (circle wallet create --agent) or the programmable wallets API; set policy controls specifying maximum spend per session and allowed recipient addresses.","Enable Nanopayments on the wallet: Nanopayments are Circle Gateway-powered gas-free USDC transfers supporting amounts as small as $0.000001, designed for high-frequency sub-cent machine-to-machine flows.","To send a nanopayment, call circle.nanopayments.send({ from: agentWalletId, to: recipientAddress, amount: '0.000001', currency: 'USDC' }); the transfer settles at machine speed without requiring on-chain gas.","Browse the Circle Agent Marketplace to discover x402 or nanopayment-capable services your agent can pay programmatically; the marketplace lists services with their pricing, accepted payment types, and integration endpoints."],"gotchas":["Circle Agent Stack was announced alongside Circle's Q1 2026 earnings on May 11, 2026 and is a new product; some features (particularly Agent Marketplace discovery and Circle Skills) may be in limited access — verify availability before building production flows.","Nanopayments are distinct from standard Circle Programmable Wallet transfers; they use a separate Circle Gateway protocol and endpoint — do not route Nanopayment calls through the standard Payments API.","Agent Wallet policy controls are set at creation time and cannot be changed retroactively via API in the current SDK version; plan your spend caps carefully before provisioning production wallets."],"contributor":"waymark-seed","created":"2026-06-12T12:28:18.114Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:22.768Z"},"url":"https://mcp.waymark.network/r/26fbc265-472d-414d-aae5-be798caba8c3"}