eBay-Style Marketplace Backend

createproductlistingproduct-api-design 1/2/2026

Business API Design Specification - Create Productlistingproduct

A Business API is a set of logical actions centered around a main data object. These actions can range from simple CRUD operations to complex workflows that implement intricate business logic.

While the term “API” traditionally refers to an interface that allows software systems to interact, in Mindbricks a Business API represents a broader concept. It encapsulates a business workflow around a data object, going beyond basic CRUD operations to include rich, internally coordinated actions that can be fully designed and customized.

This document provides an in-depth explanation of the architectural design of the createProductListingProduct Business API. It is intended to guide backend architects and developers in maintaining the current design. Additionally, frontend developers and frontend AI agents can use this document to understand how to properly consume this API on the client side.

Main Data Object and CRUD Operation

The createProductListingProduct Business API is designed to handle a create operation on the ProductListingProduct data object. This operation is performed under the specified conditions and may include additional, coordinated actions as part of the workflow.

API Description

Create a new product listing (fixed or auction), conditioned on product type. Type is immutable after creation.

API Options

  • Auto Params : true Determines whether input parameters should be auto-generated from the schema of the associated data object. Set to false if you want to define all input parameters manually.

  • Raise Api Event : true Indicates whether the Business API should emit an API-level event after successful execution. This is typically used for audit trails, analytics, or external integrations. The event will be emitted to the productlistingproduct-created Kafka Topic Note that the DB-Level events for create, update and delete operations will always be raised for internal reasons.

  • Active Check : `` Controls how the system checks if a record is active (not soft-deleted or inactive). Uses the ApiCheckOption to determine whether this is checked during the query or after fetching the instance.

  • Read From Entity Cache : false If enabled, the API will attempt to read the target object from the Redis entity cache before querying the database. This can improve performance for frequently accessed records.

API Controllers

A Mindbricks Business API can be accessed through multiple interfaces, including REST, gRPC, WebSocket, Kafka, or Cron. The controllers listed below map the business workflow to a specific interface, enabling consistent interaction regardless of the communication channel.

REST Controller

The createProductListingProduct Business API includes a REST controller that can be triggered via the following route:

/v1/productlistingproducts

By sending a request to this route using the service API address, you can execute this Business API. Parameters can be provided in multiple HTTP locations, including the URL path, URL query, request body, and request headers. Detailed information about these parameters is provided in the Parameters section.

MCP Tool

REST controllers also expose the Business API as a tool in the MCP, making it accessible to AI agents. This createProductListingProduct Business API will be registered as a tool on the MCP server within the service binding.

API Parameters

The createProductListingProduct Business API has 23 parameters that must be sent from the controller. Note that all parameters, except session and Redis parameters, should be provided by the client.

Business API parameters can be:

  • Auto-generated by Mindbricks — inferred from the CRUD type and the property definitions of the main data object when the autoParameters option is enabled.
  • Custom parameters added by the architect — these can supplement or override the auto-generated parameters.

Parameter Details

Name Type Required Default Location Data Path
productListingProductId ID No - body productListingProductId
Description: This id paremeter is used to create the data object with a given specific id. Leave null for automatic id.
currency String Yes - body currency
Description: ISO currency code (e.g. USD, EUR)
description Text Yes - body description
Description: Product detailed description
condition Enum Yes - body condition
Description: Condition of product: BRAND_NEW, NEW, or USED
startBid Double No - body startBid
Description: The opening bid value (for auction type products)
endPrice Double No - body endPrice
Description: Optional immediate sale/upper end price for auction (if AUCTION type)
price Double No - body price
Description: Product price (required if fixed price type)
title String Yes - body title
Description: Product title
startPrice Double No - body startPrice
Description: Minimum starting price for auction (required if AUCTION type)
type Enum Yes - body type
Description: Product listing type, either FIXED or AUCTION (immutable after creation)
endBid Double No - body endBid
Description: The upper (max) bid value for auction products (if any)
estimatedDelivery Date No - body estimatedDelivery
Description: Estimated delivery date for this product
shippingCurrency String Yes - body shippingCurrency
Description: Currency code for shipping cost
sellerId ID Yes - session userId
Description: Reference to user who listed the product
mediaAssetIds ID No - body mediaAssetIds
Description: References to associated product/media assets
shippingMethod Enum Yes - body shippingMethod
Description: Shipping option for product: STANDARD, EXPRESS, or FREE
shipping Double Yes - body shipping
Description: Shipping cost for this product
startBidDate Date No - body startBidDate
Description: Date/time when auction bidding begins
subcategoryId ID Yes - body subcategoryId
Description: Reference to subcategory
categoryId ID Yes - body categoryId
Description: Reference to parent category
endBidDate Date No - body endBidDate
Description: Date/time when auction bidding ends
currentBid Double No - body currentBid
Description: Current highest bid for auction-type product (updated atomically on bid placement)
highestBidderId ID No - body highestBidderId
Description: User ID of current highest bidder (auction-only, updated by auction microservice)

Parameter Transformations

Some parameters are post-processed using transform scripts after being read from the request but before validation or workflow execution. Only parameters with a transform script are listed below.

No parameters are transformed in this API.

AUTH Configuration

The authentication and authorization configuration defines the core access rules for the createProductListingProduct Business API. These checks are applied after parameter validation and before executing the main business logic.

While these settings cover the most common scenarios, more fine-grained or conditional access control—such as permissions based on object context, nested memberships, or custom workflows—should be implemented using explicit actions like PermissionCheckAction, MembershipCheckAction, or ObjectPermissionCheckAction.

Login Requirement

This API requires login (loginRequired = true). Requests from non-logged-in users will return a 401 Unauthorized error. Login is necessary but not sufficient, as additional role, permission, or other authorization checks may still apply.


Ownership Checks


Role and Permission Settings


Data Clause

Defines custom field-value assignments used to modify or augment the default payload for create and update operations. These settings override values derived from the session or parameters if explicitly provided.", Note that a default data clause is always prepared by Mindbricks using data property settings, however any property in the data clause can be override by Data Clause Settings.

Custom Data Clause Override No custom data clause override configured

Actual Data Clause

The business api will use the following data clause. Note that any calculated value will be added to the data clause in the api manager.

{
  id: this.productListingProductId,
  currency: this.currency,
  description: this.description,
  condition: this.condition,
  startBid: this.startBid,
  endPrice: this.endPrice,
  price: this.price,
  title: this.title,
  startPrice: this.startPrice,
  type: this.type,
  endBid: this.endBid,
  estimatedDelivery: this.estimatedDelivery,
  shippingCurrency: this.shippingCurrency,
  sellerId: this.sellerId,
  mediaAssetIds: this.mediaAssetIds,
  shippingMethod: this.shippingMethod,
  shipping: this.shipping,
  startBidDate: this.startBidDate,
  subcategoryId: this.subcategoryId,
  categoryId: this.categoryId,
  endBidDate: this.endBidDate,
  currentBid: this.currentBid,
  highestBidderId: this.highestBidderId,
  isActive: true,
  _archivedAt: null,
}

Business Logic Workflow

[1] Step : startBusinessApi

Manager initializes context, populates session and request objects, prepares internal structures for parameter handling and workflow execution.

You can use the following settings to change some behavior of this step. apiOptions, restSettings, grpcSettings, kafkaSettings, socketSettings, cronSettings

[2] Step : readParameters

Manager reads input parameters, normalizes missing values, applies default type casting, and stores them in the API context.

You can use the following settings to change some behavior of this step. customParameters, redisParameters

[3] Step : transposeParameters

Manager transforms parameters, computes derived values, flattens or remaps arrays/objects, and adjusts formats for downstream processing.


[4] Step : checkParameters

Manager executes built-in validations: required field checks, type enforcement, and basic business rules. Prevents operation if validation fails.


[5] Step : checkBasicAuth

Manager performs authentication and authorization checks: verifies session, user roles, permissions, and tenant restrictions.

You can use the following settings to change some behavior of this step. authOptions

[6] Step : buildDataClause

Manager constructs the final data object for creation, fills auto-generated fields (IDs, timestamps, owner fields), and ensures schema consistency.

You can use the following settings to change some behavior of this step. dataClause

[7] Step : mainCreateOperation

Manager executes the database insert operation, updates indexes/caches, and triggers internal post-processing like linked default records.


[8] Step : buildOutput

Manager shapes the response: masks sensitive fields, resolves linked references, and formats output according to API contract.


[9] Step : sendResponse

Manager sends the response to the client and finalizes internal tasks like flushing logs or updating session state.


[10] Step : raiseApiEvent

Manager triggers API-level events (Kafka, WebSocket, async workflows) as the final internal step.


Rest Usage

Rest Client Parameters

Client parameters are the api parameters that are visible to client and will be populated by the client. Note that some api parameters are not visible to client because they are populated by internal system, session, calculation or joint sources.

The createProductListingProduct api has got 21 client parameters

Parameter Type Required Population
currency String true request.body?.currency
description Text true request.body?.description
condition Enum true request.body?.condition
startBid Double false request.body?.startBid
endPrice Double false request.body?.endPrice
price Double false request.body?.price
title String true request.body?.title
startPrice Double false request.body?.startPrice
type Enum true request.body?.type
endBid Double false request.body?.endBid
estimatedDelivery Date false request.body?.estimatedDelivery
shippingCurrency String true request.body?.shippingCurrency
mediaAssetIds ID false request.body?.mediaAssetIds
shippingMethod Enum true request.body?.shippingMethod
shipping Double true request.body?.shipping
startBidDate Date false request.body?.startBidDate
subcategoryId ID true request.body?.subcategoryId
categoryId ID true request.body?.categoryId
endBidDate Date false request.body?.endBidDate
currentBid Double false request.body?.currentBid
highestBidderId ID false request.body?.highestBidderId

REST Request

To access the api you can use the REST controller with the path POST /v1/productlistingproducts

  axios({
    method: 'POST',
    url: '/v1/productlistingproducts',
    data: {
            currency:"String",  
            description:"Text",  
            condition:"Enum",  
            startBid:"Double",  
            endPrice:"Double",  
            price:"Double",  
            title:"String",  
            startPrice:"Double",  
            type:"Enum",  
            endBid:"Double",  
            estimatedDelivery:"Date",  
            shippingCurrency:"String",  
            mediaAssetIds:"ID",  
            shippingMethod:"Enum",  
            shipping:"Double",  
            startBidDate:"Date",  
            subcategoryId:"ID",  
            categoryId:"ID",  
            endBidDate:"Date",  
            currentBid:"Double",  
            highestBidderId:"ID",  
    
    },
    params: {
    
    }
  });

REST Response

The API response is encapsulated within a JSON envelope. Successful operations return an HTTP status code of 200 for get, list, update, or delete requests, and 201 for create requests. Each successful response includes a "status": "OK" property. For error handling, refer to the "Error Response" section.

Following JSON represents the most comprehensive form of the productListingProduct object in the respones. However, some properties may be omitted based on the object's internal logic.

{
	"status": "OK",
	"statusCode": "201",
	"elapsedMs": 126,
	"ssoTime": 120,
	"source": "db",
	"cacheKey": "hexCode",
	"userId": "ID",
	"sessionId": "ID",
	"requestId": "ID",
	"dataName": "productListingProduct",
	"method": "POST",
	"action": "create",
	"appVersion": "Version",
	"rowCount": 1,
	"productListingProduct": {
		"id": "ID",
		"currency": "String",
		"description": "Text",
		"condition": "Enum",
		"condition_idx": "Integer",
		"startBid": "Double",
		"endPrice": "Double",
		"price": "Double",
		"title": "String",
		"startPrice": "Double",
		"type": "Enum",
		"type_idx": "Integer",
		"endBid": "Double",
		"estimatedDelivery": "Date",
		"shippingCurrency": "String",
		"sellerId": "ID",
		"mediaAssetIds": "ID",
		"shippingMethod": "Enum",
		"shippingMethod_idx": "Integer",
		"shipping": "Double",
		"startBidDate": "Date",
		"subcategoryId": "ID",
		"categoryId": "ID",
		"endBidDate": "Date",
		"currentBid": "Double",
		"highestBidderId": "ID",
		"isActive": true,
		"recordVersion": "Integer",
		"createdAt": "Date",
		"updatedAt": "Date",
		"_owner": "ID"
	}
}