x402.fairseal.io

Commit-before-entropy spot assignment for live card breaks, giveaways, and raffles. POST {spots[], participants[], label?} (1..500 strings, 1..100 chars each). Returns commitment immediately; poll result_url free for receipt with assignment, rule_hash, entropy, derivation steps, and offline verification guide.

Open endpoint ↗

Price per call: $0.02
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://x402.fairseal.io/v1/break", { method: "POST" });
console.log(await res.json());

https://x402.fairseal.io/v1/break