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AI Agent Buys $2.75 Bus Ticket, Then Verifies Payment Against Receipt

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A developer approved a $2.75 Hudson Link bus ticket through Telegram, and their AI agent, ARGUS, completed the purchase using a prepaid card funded with USDC on Base. The ticket PDF was sent back to the chat, but the agent initially failed to match the charge to the carrier's receipt because the card provider returned the amount as a string rather than a number. The developer fixed the bug by parsing amounts as integer cents, after which the agent retrieved the Coach USA receipt and confirmed a matching $2.75 debit on the issuer side. The agent stored the order number and a receipt hash, so repeated checks returned the saved result rather than triggering a second purchase. The pilot covered one route, one passenger, and one card, and the card provider did not expose final settlement status.

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