<form id="contact-form" data-humanproof="YOUR_FORM_ID">
  <label>Email <input type="email" name="email" required></label>
  <button type="submit">Send</button>
</form>
<script
  src="https://api.agenthouse.org/humanproof/humanproof.js"
  data-site-key="YOUR_PUBLIC_SITE_KEY"
  data-powered-by="true"
  data-endpoint="https://api.agenthouse.org/humanproof"
  data-prefetch-challenge-delay-ms="2500"
  data-prefetch-expiry-margin-ms="15000"
></script>

<form id="a" data-humanproof="form-a">...</form>
<form id="b" data-humanproof="form-b">...</form>
<script
  src="https://api.agenthouse.org/humanproof/humanproof.js"
  data-site-key="YOUR_PUBLIC_SITE_KEY"
  data-powered-by="true"
  data-endpoint="https://api.agenthouse.org/humanproof"
  data-prefetch-challenge-delay-ms="2500"
  data-prefetch-expiry-margin-ms="15000"
></script>

const verifyUrl = 'https://api.agenthouse.org/humanproof/verify';
const secretKey = ''; // set from your secrets store before use
const payload = JSON.parse(formFields.humanproof);
const body = { secretKey, ...payload };
if (typeof body.hostname !== 'string' || !body.hostname.trim()) {
  if (typeof body.boundHost === 'string' && body.boundHost.trim()) {
    body.hostname = body.boundHost.trim();
  }
}
const result = await (await fetch(verifyUrl, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify(body)
})).json();
if (!result.accept) return; // do not process as a verified submit

<?php
$url = 'https://api.agenthouse.org/humanproof/verify';
$secret = ''; // set from your server secret store before use
$payload = json_decode($_POST['humanproof'], true);
$body = array_merge(['secretKey' => $secret], $payload);
if (empty($body['hostname']) && !empty($body['boundHost'])) {
  $body['hostname'] = $body['boundHost'];
}
$ch = curl_init($url);
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
  CURLOPT_POSTFIELDS => json_encode($body),
  CURLOPT_RETURNTRANSFER => true,
]);
$out = curl_exec($ch);
$result = json_decode($out, true);
// if (empty($result['accept'])) { return; }
?>

import json
import urllib.request

VERIFY_URL = "https://api.agenthouse.org/humanproof/verify"

def verify_humanproof(secret_key: str, payload: dict) -> dict:
    body = {"secretKey": secret_key, **payload}
    if not (isinstance(body.get("hostname"), str) and body["hostname"].strip()):
        bh = body.get("boundHost")
        if isinstance(bh, str) and bh.strip():
            body["hostname"] = bh.strip()
    req = urllib.request.Request(
        VERIFY_URL,
        data=json.dumps(body).encode("utf-8"),
        headers={"Content-Type": "application/json"},
        method="POST",
    )
    with urllib.request.urlopen(req, timeout=30) as resp:
        r = json.load(resp)
    # if not r.get("accept"): return
    return r