Using WooCommerce REST API to query/update product/variation inventory

By default, inventory can be added/updated for each location when editing a product or variation manually in the WooCommerce admin. Once the inventory is set, and the product is saved, we will recalculate the total inventory for the product/variation to be the sum of the inventory in all locations.

We are also compatible with retrieving and updating inventory levels over the WooCommerce REST API.

• Inventory is always stored/managed using the location ID. This is set when creating a location, in the Locations tab of our integration. The Location ID is used both in the custom fields in the database and over the WooCommerce REST API.

Querying Simple Product inventory

wp-json/wc/v3/products/

We support retrieving inventory levels for simple products via the WooCommerce REST API by including the Warehouse/Location ID in the top-level API response. When sending a GET request for the products endpoint, the response will contain a new property called warehouse – that will contain a list of location IDs and inventory value in that location. The structure is: “locationid”: “inventorylevel”.

Simple Product (full response)

"warehouse": {
        "204": "5",
        "205": "9"
    }

Querying Variation inventory

wp-json/wc/v3/products/000/variations

We support retrieving inventory levels of variations via the WooCommerce REST API by including the Warehouse/Location ID in the API response for each variation. When sending a GET request for the product/variation endpoint, the response will contain a new property called warehouse – that will contain a list of location IDs and inventory value in that location. The structure is: “locationid”: “inventorylevel”.

Variable Product (full response)

{
        "id": 267,
        "sku": "LG-12",
        "price": "15",
        "regular_price": "15",
        "warehouse": {
            "204": "1",
            "205": "3"
        },
    },
    {
        "id": 266,
        "sku": "M-12",
        "price": "11",
        "regular_price": "11",
        "sale_price": "",
        "warehouse": {
            "204": "2"
        },

Updating Product inventory

wp-json/wc/v3/products/

wp-json/wc/v3/products/00/variations/00

We support updating inventory levels for simple products and variations via the WooCommerce REST API with a PUT request. When sending a PUT request for the products or variation endpoint, the request should follow the below structure:

Simple Product

{
  "meta_data" : [
      {
          "key": "_stocks_location_204",
          "value": "25"
      },
      {
          "key": "_stocks_location_205",
          "value": "20"
      }      
      ]
}