I would like to return json responseobject via a status codes and messages for the creating customer account using magento2 REST API.

I found some documentations below:-

1) https://restfulapi.net/http-status-codes/

2) http://devdocs.magento.com/guides/v2.1/get-started/gs-web-api-response.html

API Url:- rest/V1/customer/signup

Method:- POST

Screenshot:- http://prntscr.com/ho6moe

Model code:-


namespace Test\Custom\Model;
class CustomerSignupAccount implements \Test\Custom\Api\CustomerSignupInterface

     * @var \Magento\Store\Model\StoreManagerInterface
    protected $storeManager;

     * @var \Magento\Customer\Model\CustomerFactory
    protected $customerFactory;

     * @param \Magento\Store\Model\StoreManagerInterface $storeManager
     * @param \Magento\Customer\Model\CustomerFactory    $customerFactory
    public function __construct(
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Customer\Model\CustomerFactory $customerFactory
    ) {
        $this->storeManager     = $storeManager;
        $this->customerFactory  = $customerFactory;


     * {@inheritdoc}

     public function customerSignup($customerData)
        // Perparing Customer Data
        $firstName      = $customerData['firstname'];       
        $lastName       = $customerData['lastname'];
        $email          = $customerData['email'];

        // Validate Customer EmailAddress
        if(!\Zend_Validate::is(trim($customerData['email']), 'NotEmpty')) 
            return 'Please check your email, it should not empty';
        if(!\Zend_Validate::is(trim($customerData['email']), 'EmailAddress'))
            return 'Please check your email formate and try again';


            // Get Website ID
            $websiteId  = $this->storeManager->getWebsite()->getWebsiteId();            
            $customerData = $this->customerFactory->create(); 
                return 'Customer account has been already registered with this email '.$email ;

                //Instantiate object (this is the most important part)
                $customer   = $this->customerFactory->create();
                // Preparing data for new customer
                // Save customer data

                return 'Your account has been created successfully.';

        catch(\Exception $e){

            return 'Something bad happend please try again';



Note:- Here i am able to create an account it's working fine.

Please suggest me how to show response in the form of status codes and messages?