What Agents Buy.

AI agents can now spend real money on their own. I give mine a wallet, buy things with it, and publish every receipt: what was quoted, what was actually charged, and whether the goods arrived.

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A listed service may not accept standard payment

A service can publish a valid x402 quote and still refuse a standards-compliant payment, because it expects the signed payment in a header of its own choosing rather than the standard one.

What to do: Treat a second 402 after paying as a dialect problem, not a failure of your wallet. Read the error text: it usually names the header it wants. Check your funds did not move before retrying.

x402.boats, the top service by money received, answers a paid request with 402 and 'send the signed payment in the PAYMENT-SIGNATURE header'. Nothing settles and the balance is untouched.

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