Seller Assistant API
HomeSeller AssistantHelp CenterAccount
HomeSeller AssistantHelp CenterAccount
Get API Keys
  1. Listings Items
  • Introduction
  • Authentication
  • Throttling
  • Error Handling
  • Swagger Documentation
  • Marketplace IDs and Categories
  • User Info
    • Get current user info
      GET
  • Products
    • Get product info
      GET
    • Get product statistics
      GET
    • Calculate product profit
      POST
  • UPC-EAN-ASIN converters
    • Get product ASINs based on identifiers (UPC or EAN)
      GET
    • Get product identifiers (UPC, EAN, etc.) based on ASIN
      GET
  • Restrictions
    • Check ASIN restrictions
      GET
  • Sales Estimation
    • Estimate sales by ASIN
      GET
    • Estimate sales by BSR and category
      POST
  • Keepa
    • Get Keepa product
      GET
    • Search Keepa products
      GET
    • Keepa Product Finder
      POST
  • FBA Inbound Shipments
    • Summary
    • List inbound plans
      GET
    • Get inbound plan
      GET
    • List plan shipments
      GET
    • Get shipment
      GET
    • List shipment items
      GET
    • Get shipment fees
      GET
  • Listings Items
    • Search listings items
      GET
    • Get listings item
      GET
    • Create or update listing from ASIN
      PUT
    • Delete listings item
      DELETE
  • SP-API FBA Shipments
    • Get old shipments
    • Get old shipment items
    • Get old shipment items by old shipment id
    • List inbound plans
    • Get inbound plan
    • List placement options
    • List transportation options
    • Get shipment
    • List shipment items
  • SP-API Catalog Items
    • Search catalog items
    • Get catalog item
  • SP-API Listings Items
    • Search listings items
    • Get listings item
    • Put listings item
    • Delete listings item
    • Patch listings item
  • SP-API Product Type Definitions
    • Search definitions product types
    • Get a product type definition
  1. Listings Items

Create or update listing from ASIN

Developing
PUT
https://app.sellerassistant.app/api/v1/listings/items/{sku}
Create or update a listing by copying product data from an existing ASIN and adding offer details. Amazon seller account integration is required to make this request. You can do it here.

Request

Authorization
API Key
Add parameter in query
api_key
Example:
api_key: ********************
or
API Key
Add parameter in header
X-Api-Key
Example:
X-Api-Key: ********************
or
Path Params

Query Params

Body Params application/jsonRequired

Example
{
    "asin": "B08T8YZ48Y",
    "price": 28.33,
    "currency": "USD",
    "condition": "new_new",
    "isFBA": true,
    "attributeOverrides": {
        "max_order_quantity": [
            {
                "value": 3,
                "marketplace_id": "ATVPDKIKX0DER"
            }
        ]
    }
}

Request Code Samples

Shell
JavaScript
Java
Swift
Go
PHP
Python
HTTP
C
C#
Objective-C
Ruby
OCaml
Dart
R
Request Request Example
Shell
JavaScript
Java
Swift
curl --location --request PUT 'https://app.sellerassistant.app/api/v1/listings/items/Test Companies 30-10-2025 B08T8YZ48Y?mode=VALIDATION_PREVIEW&issueLocale=en_US&domain=amazon.com&marketplaceId=ATVPDKIKX0DER&api_key=<api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "asin": "B08T8YZ48Y",
    "price": 28.33,
    "currency": "USD",
    "condition": "new_new",
    "isFBA": true,
    "attributeOverrides": {
        "max_order_quantity": [
            {
                "value": 3,
                "marketplace_id": "ATVPDKIKX0DER"
            }
        ]
    }
}'

Responses

🟢200OK
application/json
Successful response
Body

Example
{
    "sku": "Test Companies 27-10-2025 B08T8YZ48Y",
    "status": "ACCEPTED",
    "submissionId": "f1dc2914-75dd-11ea-bc55-0242ac130003",
    "issues": [
        {
            "code": "90220",
            "message": "'size' is required but not supplied.",
            "severity": "ERROR",
            "attributeNames": [
                "size"
            ],
            "categories": [
                "INVALID_ATTRIBUTE"
            ],
            "enforcements": {
                "actions": [
                    {
                        "action": "LISTING_SUPPRESSED"
                    }
                ],
                "exemption": {
                    "status": "EXEMPT",
                    "expiryDate": "2019-08-24T14:15:22Z"
                }
            },
            "identifiers": [
                {
                    "marketplaceId": "ATVPDKIKX0DER",
                    "asin": "B08T8YZ48Y"
                }
            ]
        }
    ]
}
🟠400Bad Request
🟠402Payment Required
🟠403Forbidden
🟠404Not Found
🟠422Unprocessable Entity
🟠429Too Many Requests
🔴500Internal Server Error
Modified at 2025-11-06 18:10:49
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