SiteCheck Web Intel

For a subdomain: finds its CNAME, matches the target against the public can-i-take-over-xyz fingerprint list (services such as GitHub Pages, S3, Azure, WordPress), checks whether the target still resolves, and fetches the subdomain once to look for the service's 'unclaimed' page text. Verdicts are evidence, not proof; the list is community-maintained.

Open endpoint ↗

Price per call: $0.002
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://api.webintel-api.workers.dev/api/security/subdomain-takeover", { method: "GET" });
console.log(await res.json());

https://api.webintel-api.workers.dev/api/security/subdomain-takeover