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

# Set Shipping Method

<Warning>
  This API requires **CoCart Plus v2 or higher** to use.
</Warning>

<Accordion title="How do I find my shipping rate ID/package ID?">
  If the cart response has not provided any shipping packages, your store must have requested the customer provides a shipping address before shipping rates can be calculated. This is the default behavior of WooCommerce.

  Once the shipping address has been provided, the cart response will include the `packages` object under **shipping**. This object contains an array of shipping packages each containing it's own set of `rates`.

  Each rate has a `key` and `instance_id`. The `key` is the shipping rate ID, and the `instance_id` is the package ID. You can use these values to set the shipping method for the cart.
</Accordion>