# Install: pip install requests
# Get your Merchant ID and API Key from https://test.vantack.com (sandbox) or https://app.vantack.com (production)
import requests, os
from flask import Flask, render_template

app = Flask(__name__)

def get_rocketramp_embed_code(recipient_email: str, memo: str = "") -> str:
    # Production: api.vantack.com (credentials from app.vantack.com)
    # Sandbox:    test-api.vantack.com (credentials from test.vantack.com)
    response = requests.post(
        "https://api.vantack.com/v1/merchants/embed/prefill",
        headers={
            "Merchant-ID":  os.environ["ROCKETRAMP_MERCHANT_ID"],
            "API-Key":      os.environ["ROCKETRAMP_API_KEY"],
            "Content-Type": "application/json",
        },
        json={"email": recipient_email, "memo": memo},
        timeout=10,
    )
    response.raise_for_status()
    return response.json()["embed_code"]

# Flask route example:
@app.route("/payout")
def payout_page():
    embed_code = get_rocketramp_embed_code(
        recipient_email=current_user.email,
        memo=f"Payout for order #{request.args.get('order_id')}"
    )
    return render_template("payout.html", embed_code=embed_code)

<?php
// Get your Merchant ID and API Key from https://test.vantack.com (sandbox) or https://app.vantack.com (production)
function getRocketRampEmbedCode($email, $memo = ''): string {
    $ch = curl_init();
    curl_setopt_array($ch, [
        // Production: api.vantack.com (credentials from app.vantack.com)
        // Sandbox:    test-api.vantack.com (credentials from test.vantack.com)
        CURLOPT_URL            => 'https://api.vantack.com/v1/merchants/embed/prefill',
        CURLOPT_POST           => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HTTPHEADER     => [
            'Merchant-ID: '  . getenv('ROCKETRAMP_MERCHANT_ID'),
            'API-Key: '      . getenv('ROCKETRAMP_API_KEY'),
            'Content-Type: application/json',
        ],
        CURLOPT_POSTFIELDS => json_encode([
            'email' => $email,
            'memo'  => $memo,
        ]),
    ]);
    $body = curl_exec($ch);
    curl_close($ch);
    return json_decode($body, true)['embed_code'];
}

// In your template:
$embedCode = getRocketRampEmbedCode(
    $_SESSION['user_email'],
    'Payout for order #' . $orderId
);
?>

<!-- In your HTML output: -->
<script
  src="https://app.myrocketramp.com/embed/button/"
  data-embed-key="<?= htmlspecialchars($embedCode) ?>">
</script>

# Get YOUR_MERCHANT_ID and YOUR_API_KEY from https://test.vantack.com (sandbox) or https://app.vantack.com (production)
# For sandbox: use test-api.vantack.com + credentials from test.vantack.com
curl -X POST https://api.vantack.com/v1/merchants/embed/prefill \
  -H "Merchant-ID: YOUR_MERCHANT_ID" \
  -H "API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email":"recipient@example.com","memo":"Payout #1234"}'

# Response:
# {"embed_code":"ca678360-5ae6-4f6b-be1d-8583c02447cb","status":"created"}