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

# One-off Payments

> Process one-off payments when the customer is present.

One-off payments are the simplest type. They are often referred to as guest payments. You only need a customer ready to interact, an amount, and a currency.

## Request

Find the API documentation for the request [here](/products/commerce/v2/api-reference/payments_ci/one-off).

```text theme={null}
POST /payments/one-off
```

The payload for the request is very straightforward and in the simplest case looks like this:

```json theme={null}
{
  "amount": 1000,
  "currency_code": "EUR",
  "reference": "Order #12345",
  "source": { "type": "checkout" }
}
```

### Remarks

* Commerce encodes amounts in minor units of the respective currency. The example above would be 10.00 EUR.
* The `source.type` denotes that the payment will be initiated fully on the front-end, and the card details need to be entered there.

## Response

Commerce responds with a HTTP 200 OK and a JSON payload. The payload contains the session ID to handle the action requirement:

```json theme={null}
{
  "id": "54ba1fdb-7e4e-402b-aebb-66f9d5345cf8",
  "amount": { "requested": 1000 },
  "action_requirement": {
    "type": "use_sdk",
    "session_id": "d5b8e449-13da-4594-bf00-643146fb35d1"
  },
  "created_at": "2023-10-10T00:00:00Z",
  "currency_code": "EUR",
  "reference": "Order #12345",
  "status": "processing",
  "use_case": "ONE_OFF"
}
```