@402lane/middleware

One-line USDG paywall for Express, on Robinhood Chain (chain 4663) — part of 402LANE.

import { lane402 } from "@402lane/middleware";

app.use("/api", lane402({
  price: "0.001",            // USDG per request
  payTo: "0xYourAddress",    // you get paid here, directly
  network: "eip155:4663",     // or eip155:46630 for testnet
  // resourceUrl: "https://api.example/api", // when running behind a proxy
}));

Requests without payment get an HTTP 402 with a PAYMENT-REQUIRED header; paid responses carry a PAYMENT-RESPONSE header with the settlement tx hash. facilitatorUrl defaults to the hosted 402LANE facilitator. See the docs. MIT.