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

# Payment Link

## Example Use Cases

|                                               |
| --------------------------------------------- |
| Selling online products through the web       |
| Charging for freelance or consulting services |
| Accepting donations or one-time payments      |

## API Required

1. [Create Purchases API](/chip-collect/api-reference/purchases/create)

## Example JSON Payload

Alan buy a mug for RM 10.00

1. Create a purchase using [Purchases API](/chip-collect/api-reference/purchases/create)
   <br /> - get `checkout_url` from response body to be use as a payment link

```js theme={null}
{
  "client": {
    "email": "test@test.com",
    "full_name": "Alan"
  },
  "purchase": {
    "products": [
      {
        "name": "Mug",
        "price": 1000
      }
    ]
  },
  "brand_id": "<<Brand_id>>"
}
```

## Testing Integration

It’s possible to test-drive all checkouts using a test Purchase.

To test a successful payment, you can use the following card numbers:

* 4444 3333 2222 1111 - non-3D Secure card
* 5555 5555 5555 4444 - 3D Secure card

For both cards, please use:

* any cardholder name
* any expiry larger or equal to the current month/year
* CVC = 123

To test a failed payment, please change the CVC or expiration date.

When using a 3D Secure enrolled card in S2S checkout,  an incorrect CVC will trigger an authorization failure on the S2S callback step (after the customer returns from test ACS). Using a wrong expiry date emulates data validation failure and results in immediate error before that step.