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

# cart.order.completed

> An order has completed successfully.

# cart.order.completed

> Generated from COPE public event contracts. Do not edit this page by hand.

Use this event to start fulfillment, grant access, or reconcile a successful purchase.

## Delivery Contract

| Field           | Value                                                                                |
| --------------- | ------------------------------------------------------------------------------------ |
| Encoding        | CloudEvents 1.0 structured JSON                                                      |
| Delivery        | At least once                                                                        |
| Idempotency     | Use the CloudEvents `source` + `id` tuple, or COPE `idempotency_key` when available. |
| Source          | `cope.cart`                                                                          |
| Subject pattern | `order:<identifier>`                                                                 |
| Category        | Orders                                                                               |
| Availability    | Available in the public webhook reference.                                           |
| Schema title    | cart.order.completed v1 payload                                                      |
| Schema ID       | `https://schemas.cope.com/events/cart.order.completed/v1`                            |

## Payload Fields

| Field                | Required | Type     | Allowed Values            | Description                                                                                   |                                                                                                                                                                                       |
| -------------------- | -------- | -------- | ------------------------- | --------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `business`           | yes      | `object` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `buyer`              | yes      | `object` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `currency`           | yes      | `string` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `event_type`         | yes      | `const`  | `cart.order.completed`    | -                                                                                             |                                                                                                                                                                                       |
| `first_click_ref`    | no       | \`string | null\`                    | -                                                                                             | Raw, unvalidated affiliate reference captured from the inbound `?aff=` parameter. It is not a resolved or validated affiliate ID; COPE resolves and validates attribution downstream. |
| `line_items`         | yes      | `array`  | -                         | -                                                                                             |                                                                                                                                                                                       |
| `occurred_at`        | yes      | `string` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `order`              | yes      | `object` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `order_overview_url` | yes      | `string` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `payment`            | yes      | `object` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `payment_method`     | yes      | \`object | null\`                    | -                                                                                             | -                                                                                                                                                                                     |
| `phone_offer_id`     | no       | \`string | null\`                    | -                                                                                             | Phone offer identifier associated with this sale, if any. Raw attribution signal only.                                                                                                |
| `promo`              | yes      | \`object | null\`                    | -                                                                                             | -                                                                                                                                                                                     |
| `promo_code`         | no       | \`string | null\`                    | -                                                                                             | Promo code applied to this sale, if any. Raw attribution signal only.                                                                                                                 |
| `rail`               | yes      | `string` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `schema_version`     | yes      | `const`  | `1.3`                     | -                                                                                             |                                                                                                                                                                                       |
| `seller_vat_info`    | no       | \`object | null\`                    | -                                                                                             | Seller identity used for invoicing when the creator is the VAT-liable party. Null when COPE is the VAT-liable party.                                                                  |
| `totals`             | yes      | `object` | -                         | -                                                                                             |                                                                                                                                                                                       |
| `vat_mode`           | no       | `string` | `cope_vat`, `creator_vat` | Which party is liable for VAT on this sale: COPE (`cope_vat`) or the creator (`creator_vat`). |                                                                                                                                                                                       |
| `vat_responsibility` | no       | `string` | `cope`, `creator`         | Which party remits VAT to the tax authority.                                                  |                                                                                                                                                                                       |

## Example CloudEvent

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{
  "data": {
    "business": {},
    "buyer": {},
    "currency": "EUR",
    "event_type": "cart.order.completed",
    "line_items": [
      {
        "amounts": {
          "gross_cents": 1000,
          "net_cents": 1000,
          "tax_cents": 1000,
          "tax_percentage": 19
        },
        "is_trial": true,
        "product": {},
        "quantity": 1000
      }
    ],
    "occurred_at": "2026-05-05T12:00:00.000Z",
    "order": {
      "created_at": "2026-05-05T12:00:00.000Z",
      "currency": "EUR",
      "source": "example_source"
    },
    "order_overview_url": "https://example.com",
    "payment": {},
    "payment_method": {},
    "promo": {},
    "rail": "example_rail",
    "schema_version": "1.3",
    "totals": {
      "product": {
        "gross_cents": 1000,
        "net_cents": 1000,
        "tax_cents": 1000
      },
      "total": {
        "gross_cents": 1000,
        "net_cents": 1000,
        "tax_cents": 1000
      }
    }
  },
  "datacontenttype": "application/json",
  "dataschema": "https://schemas.cope.com/events/cart.order.completed/v1",
  "id": "cart.order.completed:example",
  "idempotency_key": "cart.order.completed:example",
  "source": "cope.cart",
  "specversion": "1.0",
  "subject": "order:example",
  "time": "2026-05-05T12:00:00.000Z",
  "type": "cart.order.completed"
}
```

## Compatibility

Fields may be added within the same major version. Removing or changing the meaning of a documented field requires a new event version.