Embed SDK

<script src="https://YOUR_APP_ORIGIN/embed/embed.iife.js" defer></script>

http://localhost:3000/embed/demo.html?productId=YOUR_PRODUCT_ID&variantId=OPTIONAL_VARIANT_ID

<script src="https://YOUR_APP_ORIGIN/embed/embed.iife.js" defer></script>
<script>
  document.addEventListener('DOMContentLoaded', () => {
    Markt.init()
  })
</script>

<button
  data-markt-product-id="PRODUCT_CUID"
  data-markt-variant-id="VARIANT_UUID"
  data-markt-quantity="1"
  data-markt-theme="auto"
>
  Buy Now
</button>

Markt.init({ nonce: 'optional-csp-nonce' })

Markt.open({
  items: [{ productId: '...', variantId: '...', quantity: 1 }],
  theme: 'auto',
  affiliateCode: 'partner_1',
  returnUrl: 'https://merchant.example/thanks',
  email: 'buyer@example.com',
  couponCode: 'SAVE10',
  metadata: { campaign: 'launch' },
})

{ "type": "markt-embed-close", "returnUrl": "https://...", "paid": true }

Content-Security-Policy:
  frame-src https://YOUR_APP_ORIGIN;
  script-src 'self' 'nonce-YOUR_NONCE' https://YOUR_APP_ORIGIN;