x402 Preflight

x402 preflight: check any x402 endpoint BEFORE you pay it. Probes the target unpaid and returns its live price in USD, network, whether the asset is canonical USDC, payTo, timeout, mismatches vs the CDP Bazaar listing, and a pay / caution / do_not_pay verdict. Never signs or pays anything.

Open endpoint ↗

Price per call: $0.01
Chain: Base
Method: GET
Paid calls · 30 days: 0

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://x402-preflight-grokbot.netlify.app/api/preflight", { method: "GET" });
console.log(await res.json());

https://x402-preflight-grokbot.netlify.app/api/preflight