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A buyer is an entity that wants to access a paid service without an account or API Key. Technically, a buyer could use a traditional flow IF the flow is supported by x402.

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Benefits for the Buyer

  • Access to paid services or resources without an account
  • Access to paid services or resources without an API Key
  • Pending the seller’s integration, a buyer may have access to far more direct payment options
  • Ability to buy fractional resources or services through micropayments
  • Ability to delegate to an AI Agent

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Transaction Fees

x402 utilizes EIP-3009, a gasless meta transaction protocol, that allows buyers to authorize the movement of some amount of funds without the need to have or pay for gas. Some facilitators may charge a small fee for the use of their services, but this is typically a small percentage of the transaction amount and should be transparent to the buyer up-front.