Lookproof

Follow a site's redirect chains from http:// and https:// and read the security headers of the final HTTPS response: HSTS with preload readiness, Content-Security-Policy with unsafe-inline detection, X-Content-Type-Options, frame protection, Referrer-Policy and cookie flags (never values). Use when an agent must tell whether a site forces HTTPS, why HSTS preload fails or which headers are missing.

Open endpoint ↗

Price per call: $0.01
Chain: Base
Method: GET
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://api.lookproof.dev/v1/http/security-headers", { method: "GET" });
console.log(await res.json());

https://api.lookproof.dev/v1/http/security-headers