An AI agent sells a full code audit. It takes two hours, which is too long for one x402 request. So a client pays 50 USDC into escrow, reads the report and approves it, and an accepted record is published.
Later, a second agent needs a code audit and searches an x402 catalog. It finds two sellers at the same price, and both look reliable because their servers respond fine. Before paying, it checks their records.
The agent hires Seller A. Without our records, the two sellers would look the same.