Business API Design Specification - Register User

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

API Description

This api is used by public users to register themselves

API Options

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

/v1/registeruser

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.

gRPC Controller

The registerUser Business API includes a gRPC controller that can be triggered via the following function:

registerUser()

By calling this gRPC endpoint using a gRPC client, you can execute the Business API. Note that all parameters must be provided as function arguments, regardless of their HTTP location configuration, which is relevant only for the REST controller.

MCP Tool

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

API Parameters

The registerUser Business API has 8 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:

Regular Parameters

Name Type Required Default Location Data Path
userId ID No - body userId
Description: This id paremeter is used to create the data object with a given specific id. Leave null for automatic id.
avatar String No - body avatar
Description: The avatar url of the user. If not sent, a default random one will be generated.
socialCode String No - body socialCode
Description: Send this social code if it is sent to you after a social login authetication of an unregistred user. The users profile data will be complemented from the autheticated social profile using this code. If you provide the social code there is no need to give full profile data of the user, just give the ones that are not included in social profiles.
password String Yes - body password
Description: The password defined by the the user that is being registered.
fullname String Yes - body fullname
Description: The fullname defined by the the user that is being registered.
email String Yes - body email
Description: The email defined by the the user that is being registered.
mobile String No - body mobile
Description: The mobile number defined by the the user that is being registered.
userType Enum No - body userType
Description: Indicates whether the user is an individual or a corporate account.

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. 

this.avatar = 
  this.socialProfile?.avatar ?? (this.avatar ? this.avatar : `https://gravatar.com/avatar/${LIB.common.md5(this.email ?? 'nullValue')}?s=200&d=identicon`)

this.password = 
  this.socialProfile ? this.password ?? LIB.common.randomCode() : this.password

this.fullname = 
  this.socialProfile?.fullname ?? this.fullname

this.email = 
  this.socialProfile?.email ?? this.email

this.mobile = 
  this.socialProfile?.mobile ?? this.mobile

AUTH Configuration

The authentication and authorization configuration defines the core access rules for the registerUser 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 is public and can be accessed without login (loginRequired = false).

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

{
    emailVerified: this.socialProfile?.emailVerified ?? false,
    roleId: this.socialProfile?.roleId ?? 'user',
    : null,
   
}

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.userId,
  email: this.email,
  password: this.hashString(this.password),
  fullname: this.fullname,
  avatar: this.avatar,
  mobile: this.mobile,
  userType: this.userType,
  emailVerified: this.socialProfile?.emailVerified ?? false,
  roleId: this.socialProfile?.roleId ?? 'user',
  undefined: null,
  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] Action : fetchArchivedUser

Action Type: FetchObjectAction

Check and get if any deleted user(in 30 days) exists with the same email 

class Api {
  async fetchArchivedUser() {
    // Fetch Object on childObject user

    const userQuery = {
      $and: [
        { email: this.email, isActive: false },
        {
          _archivedAt: {
            $gte: new Date(Date.now() - 30 * 24 * 60 * 60 * 1000),
          },
        },
      ],
    };

    const { convertUserQueryToSequelizeQuery } = require("common");
    const scriptQuery = convertUserQueryToSequelizeQuery(userQuery);

    // get object from db
    const data = await getUserByQuery(scriptQuery);

    return data
      ? {
          id: data["id"],
        }
      : null;
  }
}

[6] Action : checkArchivedUser

Action Type: ValidationAction

Prevents re-register of a user when their profile is sitll in 30days archive 

class Api {
  async checkArchivedUser() {
    const isError = this.archivedUser?.email != null;

    if (isError) {
      throw new BadRequestError("YourProfileIsArchivedPleaseLoginToRestore");
    }
    return isError;
  }
}

[7] 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

[8] 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

[9] Step : mainCreateOperation

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

[10] Step : buildOutput

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

[11] Action : writeVerificationNeedsToResponse

Action Type: AddToResponseAction

Set if email or mobile verification needed

class Api {
  async writeVerificationNeedsToResponse() {
    try {
      this.output["emailVerificationNeeded"] = !this.user?.emailVerified;

      this.output["mobileVerificationNeeded"] = false;

      return true;
    } catch (error) {
      console.error("AddToResponseAction error:", error);
      throw error;
    }
  }
}

[12] Action : autoLoginAfterRegister

Action Type: FunctionCallAction

If no email or mobile verification is needed after registration, automatically create a login session and return the access token in the registration response. This provides a seamless register-and-login experience. 

class Api {
  async autoLoginAfterRegister() {
    try {
      return await (async () => {
        try {
          if (
            this.output.emailVerificationNeeded ||
            this.output.mobileVerificationNeeded
          )
            return;
          const email = this.output[this.dataName]?.email;
          if (!email) return;
          const { createSessionManager } = require("sessionLayer");
          const sm = createSessionManager();
          await sm.setLoginToRequest(this.request, null, {
            userField: "email",
            subjectClaim: email,
          });
          this.output.accessToken = sm.accessToken;
          this.output.autoLoginSession = sm.session;
          this.request.autoLoginToken = sm.accessToken;
          console.log("Auto-login after registration successful for:", email);
        } catch (autoLoginErr) {
          console.log(
            "Auto-login after registration failed:",
            autoLoginErr.message,
          );
        }
      })();
    } catch (err) {
      console.error("Error in FunctionCallAction autoLoginAfterRegister:", err);
      throw err;
    }
  }
}

[13] Step : sendResponse

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

[14] 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 registerUser api has got 6 regular client parameters

Parameter Type Required Population
avatar String false request.body?.[“avatar”]
password String true request.body?.[“password”]
fullname String true request.body?.[“fullname”]
email String true request.body?.[“email”]
mobile String false request.body?.[“mobile”]
userType Enum false request.body?.[“userType”]

REST Request

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

  axios({
    method: 'POST',
    url: '/v1/registeruser',
    data: {
            avatar:"String",  
            password:"String",  
            fullname:"String",  
            email:"String",  
            mobile:"String",  
            userType:"Enum",  
    
    },
    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 user 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": "user",
	"method": "POST",
	"action": "create",
	"appVersion": "Version",
	"rowCount": 1,
	"user": {
		"id": "ID",
		"email": "String",
		"password": "String",
		"fullname": "String",
		"avatar": "String",
		"roleId": "String",
		"mobile": "String",
		"mobileVerified": "Boolean",
		"emailVerified": "Boolean",
		"userType": "Enum",
		"userType_idx": "Integer",
		"isActive": true,
		"recordVersion": "Integer",
		"createdAt": "Date",
		"updatedAt": "Date",
		"_owner": "ID"
	}
}