Polynews · Arbitrage

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://polynews.news/api/v1/arbitrage", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://polynews.news/api/v1/arbitrage?category=politics&limit=50" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "data": {
    "computedAt": "2026-05-12T04:25:00.000Z",
    "kalshiDataAgeSec": 45,
    "matchedMarkets": 73,
    "opportunities": [
      {
        "arbitrage": {
          "confidence": "high",
          "feeEstimate": 0.038,
          "impliedProfit": 0.052,
          "spreadNet": 0.052,
          "spreadRaw": 0.09,
          "type": "BUY_YES_POLY_NO_KALSHI"
        },
        "categoryPoly": "finance",
        "id": "0xpoly__BTC200K-26DEC31",
        "kalshiTitle": "BTC at or above $200,000 by Dec 31, 2026",
        "kalshiYesAsk": 0.41,
        "kalshiYesBid": 0.39,
        "matchConfidence": 0.87,
        "polymarketNoPrice": 0.68,
        "polymarketQuestion": "Will Bitcoin reach $200K by Dec 31, 2026?",
        "polymarketYesPrice": 0.32
      }
    ],
    "polymarketDataAgeSec": 30,
    "totalKalshiMarkets": 13802,
    "totalPolymarkets": 1074
  },
  "meta": {
    "endpoint": "/api/v1/arbitrage",
    "latencyMs": 1240,
    "tier": "alpha",
    "timestamp": "2026-05-12T04:30:00.000Z",
    "version": "v1"
  }
}