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x402 vs MPP: Which Rail Should an AI Agent Pay On?

This story is from 2026-10-13. It is preserved in the archive; the latest stories are on the live feed.

x402 vs MPP: which rail should an AI agent pay on? x402 and MPP are diverging, not converging. x402 is a family of on-chain payment schemes attached to HTTP 402. MPP — the Machine Payments Protocol from Stripe and Tempo, launched March 2026 — is a payment-method-agnostic HTTP authentication framewo…

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  1. 2026-10-13 18:23 · DEV Community — AI
    x402 vs MPP: Which Rail Should an AI Agent Pay On?

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