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How do AI agents pay for an API?

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

How do AI agents pay for an API? An AI agent pays when a server sends a 402 challenge. It signs the exact request, retries, and the PAYMENT-RESPONSE header is its receipt. The steps, in order The agent asks for a page or a data call. The server replies with HTTP 402 instead of data. The 402 header…

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  1. 2026-10-29 12:21 · DEV Community — AI
    How do AI agents pay for an API?

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