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

# The Subscription Item object

A `SubscriptionItem` represents a single priced line in a subscription. Each item links a price to a quantity and determines what the customer is billed each period. A subscription must always contain at least one item.

```json theme={null}
{
  "id": "si_89abcdef0123",
  "object": "subscription_item",
  "price": {
    "currency": "CLP",
    "product": {
      "id": "prod_a7dkfnea",
      "object": "product",
      "created_at": "2025-08-01T00:00:00Z",
      "description": null,
      "image_url": null,
      "metadata": {},
      "mode": "live",
      "name": "Pro Plan"
    },
    "recurring": {
      "interval": "month",
      "interval_count": 1
    },
    "unit_amount": 15000
  },
  "quantity": 2
}
```

| Attribute                        | Type    | Description                                                                                    |
| -------------------------------- | ------- | ---------------------------------------------------------------------------------------------- |
| `id`                             | string  | Unique identifier for the subscription item.                                                   |
| `object`                         | string  | String representing the object type. Always `"subscription_item"`.                             |
| `price`                          | object  | Price configuration for this item.                                                             |
| `price.currency`                 | string  | Three-letter [ISO 4217 currency code](https://www.iso.org/iso-4217-currency-codes.html).       |
| `price.product`                  | object  | Product associated with this price.                                                            |
| `price.product.id`               | string  | Unique identifier for the product.                                                             |
| `price.product.object`           | string  | String representing the object type. Always `"product"`.                                       |
| `price.product.created_at`       | string  | ISO 8601 timestamp of when the product was created.                                            |
| `price.product.description`      | string  | Description of the product. `null` if not set.                                                 |
| `price.product.image_url`        | string  | URL of an image for the product. `null` if not set.                                            |
| `price.product.metadata`         | object  | Set of key-value pairs attached to the product.                                                |
| `price.product.mode`             | string  | `"live"` or `"test"`.                                                                          |
| `price.product.name`             | string  | Name of the product.                                                                           |
| `price.recurring`                | object  | Recurrence configuration for this price.                                                       |
| `price.recurring.interval`       | string  | Billing interval. One of `"month"` or `"year"`.                                                |
| `price.recurring.interval_count` | integer | Number of intervals between billings.                                                          |
| `price.unit_amount`              | integer | Amount charged per unit in the smallest currency unit (for example, `15000` for \$15,000 CLP). |
| `quantity`                       | integer | Number of units included in each billing period.                                               |

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