Kalshi vs Polymarket odds API

Cross-venue sports odds feed: Kalshi and Polymarket US game-winner prices for the same games with taker fees and edge after fees. Updated every 5 minutes.

Open endpoint ↗

Price per call: $0.005
Chain: Base
Method: GET
Paid calls · 30 days: 3

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://golf-evm-math.x402-evm-math.workers.dev/data/sports-xvenue", { method: "GET" });
console.log(await res.json());

https://golf-evm-math.x402-evm-math.workers.dev/data/sports-xvenue