> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yativo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sandbox: Payment Gateway

> Test the crypto payment gateway with simulated payments

## Payment Gateway in Sandbox

The sandbox payment gateway works exactly like production, but payments are simulated on testnet chains. You can create payment intents, view the hosted checkout page, and simulate payment confirmation.

***

## Create a Test Payment

```bash theme={null}
curl -X POST 'https://crypto-sandbox.yativo.com/api/v1/crypto-gateway/payments' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "amount": 25.00,
    "currency": "USD",
    "description": "Test payment"
  }'
```

The response includes a `checkout_url` you can open in a browser to see the hosted checkout page.

***

## Simulate a Payment

In sandbox, you can simulate a successful payment without actually sending on-chain funds:

```bash theme={null}
curl -X POST 'https://crypto-sandbox.yativo.com/api/v1/sandbox/simulate-gateway-payment' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "payment_id": "pi_01abc123"
  }'
```

This marks the payment as `paid` and triggers any configured webhooks, just as if a real on-chain payment was confirmed.

***

## Test Webhook Flow

1. Create a [webhook](/yativo-crypto/webhooks) listening for `gateway.payment.paid`
2. Create a payment intent
3. Simulate the payment using the endpoint above
4. Your webhook receives the payment confirmation event

This lets you test your full checkout integration without any real blockchain transactions.