What is HTTP 402 used for in x402 and MPP?

HTTP 402 triggers payment challenges in both, turning requests into billed flows for machines or agents.

x402 vs MPP: Which is better for Web2 devs?

MPP—its flexibility lets you stick with Stripe or cards, no crypto overhaul needed.

Not overnight, but they'll fragment markets, letting devs mix services without monthly anchors.

No, it's crypto-locked via ERC-20; MPP opens that door wide.

🤖 AI Dev Tools

Pay-per-request is shaking up API access. But x402's crypto purity clashes with MPP's flexible pragmatism—here's the real divide.

theAIcatchup Apr 09, 2026 4 min read

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#HTTP 402 #MPP #machine payments #x402

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Originally reported by dev.to