402Signal · Route

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://402signal.com/route", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "need": "erc20 token balance",
    "url": "https://example.com/x402/balance"
  }),
});
const data = await res.json();

curl -X POST \
  "https://402signal.com/route" \
  -H "Content-Type: application/json" \
  -d '{"need":"erc20 token balance","url":"https://example.com/x402/balance"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "billing": {
    "amount_atomic": "3000",
    "asset": "USDC",
    "condition": "live_eligible_route_found",
    "display_amount": "$0.003",
    "model": "success_only_v1",
    "rail": "base",
    "settled": true,
    "settlement_attempted": true,
    "settlement_state": "settled"
  },
  "has_402_challenge": true,
  "health": {
    "has_402_challenge": true,
    "last_probe": "2026-08-29T22:00:00-04:00",
    "latency_ms": 87,
    "live": true,
    "status": 402
  },
  "latency_ms": 87,
  "live": true,
  "probed_at": "2026-08-29T22:00:00-04:00",
  "status": 402,
  "url": "https://example.com/x402/balance"
}