Perp Gap API

Use when an agent must decide if a Hyperliquid prediction market on a crypto or stock price (e.g. 'BTC above 82k on Oct 19', 'SP500 above 7730') is cheap or expensive. Returns each live outcome's bid, ask and depth, the probability implied by the live perp price and 7d realized vol, edge in pp vs bid and ask, and a liquidity flag. Empty books are filtered. Errors: 400 bad input, 404 no live market

Open endpoint ↗

Price per call: $0.02
Chain: Base
Method: GET
Paid calls · 30 days: 2

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://perp-gap-api.perpgap.workers.dev/pm/implied", { method: "GET" });
console.log(await res.json());

https://perp-gap-api.perpgap.workers.dev/pm/implied