HTTP 402 "Payment Required" is finally earning: sell API access to AI agents with x402
HTTP 402 has been sitting in the status code spec since 1995, defined as "Payment Required" and reserved for future use. It was never used — until the agent economy needed exactly what it describes: a machine-readable way to say "this resource costs $1, pay here, then retry." The x402 protocol turn…
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- 2026-11-14 16:53 · DEV Community — AI
HTTP 402 "Payment Required" is finally earning: sell API access to AI agents with x402