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Before an AI agent pays: validate an x402 quote on Base

An AI agent that can buy external tools needs one capability before anything else: the ability to refuse a payment it didn't authorize . An HTTP 402 Payment Required response can tell the agent what a server accepts. But HTTP 402 is not a receipt . You can inspect the payment requirements for free…

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  1. 2026-11-06 06:31 · DEV Community — AI
    Before an AI agent pays: validate an x402 quote on Base

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