Classic ASP
Shopify Retrieve the item's inventory levels

After you have the inventory item ID, you can use it with the InventoryLevel resource to find the levels and locations for the inventory item:
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Classic ASP
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set http = Server.CreateObject("Chilkat.Http")

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

http.Accept = "application/json"

' How to get the inventory item ID

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpNoBody("GET","https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels.json?inventory_item_ids={inventory_item_id}",resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Response Status Code: " & resp.StatusCode) & "</pre>"

set jsonResponse = Server.CreateObject("Chilkat.JsonObject")
success = jsonResponse.Load(resp.BodyStr)
jsonResponse.EmitCompact = 0
Response.Write "<pre>" & Server.HTMLEncode( jsonResponse.Emit()) & "</pre>"

If (resp.StatusCode <> 200) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

' 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_levels": [
'     {
'       "inventory_item_id": 12250274365496,
'       "location_id": 6884556842,
'       "available": 8,
'       "updated_at": "2018-06-18T11:49:50-04:00",
'       "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
'     },
'     {
'       "inventory_item_id": 12250274365496,
'       "location_id": 13968834616,
'       "available": 50,
'       "updated_at": "2018-06-26T14:44:30-04:00",
'       "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570506808?inventory_item_id=12250274365496"
'     },
'     {
'       "inventory_item_id": 12250274365496,
'       "location_id": 13968867384,
'       "available": 100,
'       "updated_at": "2018-06-26T14:44:30-04:00",
'       "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570539576?inventory_item_id=12250274365496"
'     }
'   ]
' }
' 

i = 0
count_i = jsonResponse.SizeOfArray("inventory_levels")
Do While i < count_i
    jsonResponse.I = i
    inventory_item_id = jsonResponse.IntOf("inventory_levels[i].inventory_item_id")
    location_id = jsonResponse.IntOf("inventory_levels[i].location_id")
    available = jsonResponse.IntOf("inventory_levels[i].available")
    updated_at = jsonResponse.StringOf("inventory_levels[i].updated_at")
    admin_graphql_api_id = jsonResponse.StringOf("inventory_levels[i].admin_graphql_api_id")
    i = i + 1
Loop

%>
</body>
</html>