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1inch Business now supports pay-per-call API access using the x402 payment protocol. Applications and AI agents can pay for each Swap API request in USDC on Base at $0.00024 per call, with zero infrastructure fee on top of the per-call price. Payments happen automatically as requests are made — no monthly billing or upfront commitment — so users can simply top up and keep going when they run out of API calls, paying only for what they use.

1inch