# Inventory API

> Easily update inventory in your Shopify store in bulk based on SKUs or Barcodes

Source: https://www.synkro-app.com/documentation/inventory-api
Last updated: 2026-10-27

## Bulk update inventory

Update inventory in a store in bulk based on provided SKUs or Barcodes.

`POST /api/stores/{store_name}/inventory/bulk_update`

### Parameters

`type` _required_
The type of inventory change you would like to use for the bulk update. May be one of "**available**" or "**on_hand**".

`lookup_key` _required_
The key which should be used to search your products while performing the bulk update. May be one of "**sku**" or "**barcode**".

`inventory_levels` _required_
A list of inventory level objects which should be applied to the store. Each inventory level object must provide:

- **location_id**: the Shopify internal ID for the inventory location where the inventory change should be applied to.
- **lookup_value**: the SKU or Barcode (depending on which value was provided in the **lookup_key** parameter) which the inventory change should be applied to.
- **inventory_level**: the new inventory level which should be applied.

```javascript
[
  {
    "location_id": 123456789,
    "lookup_value": "EXAMPLE-SKU-123",
    "inventory_level": 4
  },
  ...
]
```

### Example

The following example cURL request bulk updates the **available** inventory for two SKUs at the location **123456789** in the store **example**.myshopify.com.

#### Request

```json
curl --location 'https://api.synkro-app.com/api/stores/example/inventory/bulk_update' \
--header 'Accept: application/json' \
--header 'Content-Type: application/json' \
--header 'X-Synkro-Access-Token: synkro_at_*******' \
--data '{
    "type": "available",
    "lookup_key": "sku",
    "inventory_levels": [
        {
            "location_id": 123456789,
            "lookup_value": "EXAMPLE-SKU-1",
            "inventory_level": 1
        },
        {
            "location_id": 123456789,
            "lookup_value": "EXAMPLE-SKU-2",
            "inventory_level": 2
        }
    ]
}'
```

#### Successful response `202`

```json
{
  "message": "Updating inventory for 2 found variants in 1 sub-operation(s)"
}
```

## Need Help?

Contact our support team at [support@synkro-app.com](mailto:support@synkro-app.com) for assistance with the Inventory API.