Scrapebench API

Live Kalshi and Polymarket prediction-market odds by keyword, category or city, one schema for both venues, with the price spread when the same question trades on both. Snapshot refreshed hourly from the exchanges' public APIs.

Open endpoint ↗

Price per call: $0.06
Chain: Base
Method: POST
Paid calls · 30 days: 1

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://api.scrapebench.dev/v1/prediction-markets", { method: "POST" });
console.log(await res.json());

https://api.scrapebench.dev/v1/prediction-markets