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List your x402-enabled API and start earning USDC per request — no monthly fees, no rev share.

How it works

1. Wrap your endpoint with x402

Add the x402 middleware to any existing API. Works with Node.js, Python, Go — any language.

2. Set your USDC price

Price per request, token, or byte. Payments land directly in your Arc wallet — no intermediary.

3. Submit & get verified

Fill the form below. Verification takes 24–48h. Verified APIs get a badge and priority placement.

x402 integration · Node.js

import { paymentMiddleware } from "x402-next"

export const middleware = paymentMiddleware({
  "/api/data":      { price: "$0.002", network: "arc" },
  "/api/premium/*": { price: "$0.010", network: "arc" },
})

// AI agents detect x402 and pay automatically