Quickstart — your first payment in 10 minutes

By the end you'll have: a sandbox account, a paylink created via API, a test payment, and a verified webhook delivery.

1. Create a merchant account at dashboard.zyndpay.io and generate a sandbox API key.
2. Install your SDK of choice (or use cURL).
   POST /v1/paylinks

   cURLTypeScriptPythonPHP

   curl -X POST https://api.zyndpay.io/v1/paylinks \
     -H "Authorization: Bearer zpk_sandbox_XXX" \
     -H "x-zyndpay-sandbox: true" \
     -H "Content-Type: application/json" \
     -d '{
       "amount": "10.00",
       "currency": "USDT",
       "description": "Quickstart test",
       "customer_email": "[email protected]"
     }'

3. Create a paylink. The response contains a hosted checkout URL.
4. Open the URL in a browser — sandbox mode auto-fills a test customer.
5. Point ngrok at a local endpoint and register it as the webhook URL. Verify the signature using the snippet in the Webhooks page.

That's it. Flip to a live API key and remove x-zyndpay-sandbox to go to production.