(PowerShell) Shopify Set inventory levels to a certain amount

Use the set endpoint with the location ID and inventory item ID to set an inventory level to a specific value.

For more information, see https://shopify.dev/tutorials/manage-product-inventory-with-admin-api#update-inventory-levels-for-a-product-variant

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

$http.Login = "SHOPIFY_PRIVATE_API_KEY"
$http.Password = "SHOPIFY_PRIVATE_API_KEY"

# Also see: How to retrieve inventory levels

$http.Accept = "application/json"

# The following JSON is sent in the request body:

# {
#   "location_id": 6884556842,
#   "inventory_item_id": 12250274365496,
#   "available": 1
# }

# Use this online tool to generate the code from sample JSON: 
# Generate Code to Create JSON

$jsonRequestBody = New-Object Chilkat.JsonObject
$jsonRequestBody.UpdateInt("location_id",6884556842)
$jsonRequestBody.UpdateInt("inventory_item_id",12250274365496)
$jsonRequestBody.UpdateInt("available",1)

$url = "https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels/set.json"

$resp = $http.PText("POST",$url,$jsonRequestBody.Emit(),"utf-8","application/json",$false,$false)
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

$("Response Status Code: " + $resp.StatusCode)

$jsonResponse = New-Object Chilkat.JsonObject
$jsonResponse.Load($resp.BodyStr)
$jsonResponse.EmitCompact = $false
$($jsonResponse.Emit())

if ($resp.StatusCode -ge 300) {
    $("Failed.")

    exit
}

# Sample output...
# (See the parsing code below..)
# 
# Use the this online tool to generate parsing code from sample JSON: 
# Generate Parsing Code from JSON

# {
#   "inventory_level": {
#     "inventory_item_id": 12250274365496,
#     "location_id": 6884556842,
#     "available": 1,
#     "updated_at": "2018-06-26T15:44:33-04:00",
# ...
#     "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
# ...
#   }
# }
# 

$inventory_levelInventory_item_id = $jsonResponse.IntOf("inventory_level.inventory_item_id")
$inventory_levelLocation_id = $jsonResponse.IntOf("inventory_level.location_id")
$inventory_levelAvailable = $jsonResponse.IntOf("inventory_level.available")
$inventory_levelUpdated_at = $jsonResponse.StringOf("inventory_level.updated_at")
$inventory_levelAdmin_graphql_api_id = $jsonResponse.StringOf("inventory_level.admin_graphql_api_id")