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Monetize Express.js APIs for AI Agents in 3 Lines of Code with x402

This story is from 2026-08-29. It is preserved in the archive; the latest stories are on the live feed.

AI agents are increasingly making programmatic requests, but traditional billing (credit cards, OAuth, complex API keys) creates friction for automated microtransactions. With x402-express , you can monetize any Express.js endpoint using HTTP 402 payment requirements on Base in 3 lines of code. 1.…

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  1. 2026-08-29 19:15 · DEV Community — AI
    Monetize Express.js APIs for AI Agents in 3 Lines of Code with x402

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