Security headers check API

Input

Query parameters.

Example request

curl -i 'https://api.lookproof.dev/v1/http/security-headers?domain=example.com'

import asyncio
import os

from eth_account import Account
from x402 import x402Client
from x402.http.clients import x402HttpxClient
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact import register_exact_evm_client


async def main() -> None:
    signer = EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"]))
    client = register_exact_evm_client(x402Client(), signer, networks="eip155:8453")
    async with x402HttpxClient(client) as http:
        response = await http.get('https://api.lookproof.dev/v1/http/security-headers', params={'domain': 'example.com'})
        response.raise_for_status()
        print(response.json())


asyncio.run(main())

import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.EVM_PRIVATE_KEY);
const fetchWithPayment = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const response = await fetchWithPayment("https://api.lookproof.dev/v1/http/security-headers?domain=example.com");
console.log(await response.json());

curl: unpaid request — returns 402 with the price (PAYMENT-REQUIRED). The Python and JavaScript clients pay it and send the request again. Only ordinary wallets (EOA) can pay; smart-contract wallets get a 402 without charge. See payments.

Example response

{
  "checked_at": "2026-10-24T12:00:00Z",
  "data": {
    "domain": "example.com",
    "from_http": {
      "error": null,
      "final_status": 200,
      "final_url": "https://example.com/",
      "hops": [
        {
          "location": "https://example.com/",
          "status": 301,
          "url": "http://example.com/"
        },
        {
          "location": null,
          "status": 200,
          "url": "https://example.com/"
        }
      ],
      "start_url": "http://example.com/"
    },
    "from_https": {
      "error": null,
      "final_status": 200,
      "final_url": "https://example.com/",
      "hops": [
        {
          "location": null,
          "status": 200,
          "url": "https://example.com/"
        }
      ],
      "start_url": "https://example.com/"
    },
    "headers": {
      "content_security_policy": "default-src 'self'; frame-ancestors 'none'",
      "content_security_policy_report_only": null,
      "cookies": [
        {
          "http_only": true,
          "name": "session",
          "same_site": "lax",
          "secure": true
        }
      ],
      "cross_origin_opener_policy": "same-origin",
      "permissions_policy": "camera=(), microphone=()",
      "referrer_policy": "strict-origin-when-cross-origin",
      "strict_transport_security": {
        "include_subdomains": true,
        "max_age": 63072000,
        "preload": true,
        "raw": "max-age=63072000; includeSubDomains; preload",
        "valid": true
      },
      "x_content_type_options": "nosniff",
      "x_frame_options": null
    }
  },
  "endpoint": "http.security_headers",
  "findings": [],
  "meta": {
    "cache_hit": false,
    "duration_ms": 42,
    "fresh_until": "2026-10-24T12:05:00Z",
    "observed_at": "2026-10-24T12:00:00Z",
    "resolver": null,
    "source": "dns"
  },
  "request_id": "req_aaaaaaaaaaaaaaaaaaaaaaaaaa",
  "schema_version": "1.0",
  "status": "ok"
}

Response fields

Fields in data

Status codes

Errors use the common error body. See errors.

Findings this endpoint can return