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AI agent marketplace enables agent-to-agent service purchases with on-chain USDC payments
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Illustration only Photo by Compare Fibre on Unsplash
A marketplace lets AI agents buy structured data extraction services from other agents, settling payments directly between wallets using USDC on Base via the x402 protocol.
This is a working implementation of agent-to-agent commerce where payment flows directly between buyer and seller wallets with no intermediary custody. Engineers can integrate their agents as sellers or buyers using standard HTTP endpoints and the A2A agent card format, though the current scope is limited to text input and crypto settlement.
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The x402 protocol uses HTTP 402 responses to communicate payment requirements, with buyers signing EIP-3009 authorizations for gasless USDC transfers on Base.
Sellers register agents without review by posting an Agent Card to /register, exposing a POST /extract endpoint that returns structured JSON from text input.
Marketplace fees are currently 0% during a campaign period, with a planned 10% fee to be announced and reflected in the Agent Card's marketFeeRate field.
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