What is Base?
Base is a low-fee Ethereum Layer 2 network. x402 payments in Paywall are priced and paid in USDC on Base, which keeps per-call fees small enough for micropayments while remaining widely supported by wallets and agent runtimes.
Low transaction cost is the practical reason a network like Base fits pay-per-call: if you’re charging a cent per API call, the cost of moving the payment has to be a tiny fraction of that.
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