Free sms api gateway jobs

...their services and availability. - Booking and Payment: Seamless booking and secure payment processing. - Calendar View for Schedule: A clear and organized view of the availability of service providers. - SMS Reminder: Automated reminders to reduce no-shows. - Partial Section for Advertisement: A space for beauty professionals to promote their services. Ideal Skills: - Experience in developing multi-platform applications. - Proficiency in user-friendly design. - Knowledge of secure payment gateway integration. - Previous experience with calendar-based applications. - Understanding of SMS integration for reminders. - Ability to implement advertising sections within an app. Please provide examples of previous work, particularly in the appointment booking realm. Your...

... PWA: For the design of our Progressive Web App, we used the OpenTable application as the inspiration. Similar applications that have the same functionality as our sites are: Airbnb Zillow Our application currently has approximately 20 screens and includes payment processing through our own custom gateway. QUALIFICATIONS Minimum 4 Years experience with Mobile App development, with at 2 years of experience with Flutter framework Provide at least THREE (3) live and working Mobile Apps that you have developed using Flutter or React Native Strong familiarity with both iOS and Android development environments, SDKs. Previous experience implementing user authentication systems. Experience with in-app

...data-driven decisions, I am seeking an expert to create a data analytics tool from scratch using ReactJS and AWS. The tool will analyze an array of data sources and present the results using insightful visualization techniques. Here are the requirements: - Implement Amazon Cognito for user authentication and authorization - Utilize AWS Amplify for the app's development and deployment - Integrate AWS API Gateway for efficient data exchange - Integrate Stripe for payments. Need complete flow Our tech stack looks like: - Amazon Amplify for app backend, and front end - Gatsby JS coupled with AppSync for front end - Amplify UI and MUI Material for UI components Features that I need: - End to end user journey - from login/registration to offering profile capture, to cus...

I'm in ne...developer to integrate an SMS provider into my website. The main goal of my website is to provide SMS related services to our clients. The primary SMS provider we are planning on using is Plivo. Key Responsibilities: - Integrate the Plivo SMS API into the website, ensuring it functions seamlessly. - Implement the ability to receive messages through the API, giving our customers a full spectrum of SMS services. Ideal Skills: - Previous experience with the Plivo API is highly desirable. - Proficient in website development, specifically in integrating third-party APIs. - Strong understanding of SMS functionalities. - Excellent communication skills to translate the technical aspects into a user-friendly interfac...

Project Overview: We are looking for a talented web developer or development team to transform our Excel workbook into a dynamic subscription-based web application. This workbook is integral to the operations of multiple educational institutions, featuring data management, automated calculations, and reporting capabilities. Project Goals:...volumes of data with the capability to scale as user base and data grow. Interactive Reporting and Dashboards: Tools for generating customizable reports and dashboards that can adapt to new data inputs and formats. Automated Workflow Integration: Convert existing Excel macros into automated digital workflows in the web environment. Payment and Subscription Handling: Integrate a flexible payment gateway to manage different subscription levels and...

I'm in search of an experienced developer skilled in Zendesk API integration for a project related to airline claim forms. I will provide you parts of the template and you will add the form, calculations, API integration and ticket creations. The website should be built in Laravel or secure platform. If you know about EC261 claims it makes it way easier to choose you. You will do the following: - Create a form which is predefined through parameters and questions. - Add airline and airport database and organize the data with live search preview. - Calculations based on airport distance and claim form. - Zendesk ticket creation along with correct ticket numer and relevant information. - Multilingual form and site (Swedish and English). Need someone to start ASAP.

We need to create a web-page for an FX Currency Exchange. Its very comfort because we dont have to link any API or use a hard coding skills. We need the project have very good visuals looking for atract clients. All its made via WORDPRESS We going to bring admins acces to the wordpress project to let the editors make any change as they want. Remember the base of the project has to be the same as the websites examples.. Some examples:

...discovery - Booking management to track and manage users' bookings - Incorporation of customer reviews to enhance customer confidence and choices - Integration of online payment solutions for smooth financial transactions - A Room availability calendar for easy checking of room availability - Multi-language support to cater to a global audience - A chat bot for 24/7 customer support - Google map API for straightforward hotel location - AI trip planner for personal and tailored travel planning - A refer and earn model to increase user base - A section for top offers and deals to stimulate user engagement - A voucher system for promotional campaigns and special offers. The ideal freelancer should have experience in developing similar platforms, and a good understandi...

I'm looking for a skilled developer to integrate PayPal as the payment gateway and provide real-time shipping rates into my Odoo 17 platform. Additionally, I need to set up WhatsApp for customer support chat. Key Responsibilities: - Integrate PayPal as the payment gateway. - Implement real-time shipping rates. - Set up WhatsApp for customer support chat. Ideal Skills and Experience: - Proficient in Odoo 17 development. - Extensive experience in integrating PayPal. - Knowledge of setting up real-time shipping rates. - Prior experience in configuring WhatsApp integration for customer support is a plus.

I'm using Spring Boot 2.4.5 and looking for an expert in Apache Camel for a complex integration project. Key Requirements: - Handling data integration across various s...Developing efficient routes and integration patterns using Apache Camel. - Ensuring seamless data transformation across multiple systems. Ideal candidates should have: - Proficiency in Spring Boot and Apache Camel, with a proven track record of similar projects. - Strong understanding of data transformation techniques. - Familiarity with various types of integration, particularly database, REST API, and file system integration. This is a challenging project and requires a skilled professional who can deliver high-quality results. If you meet these qualifications and are interested, I'd be glad to disc...

I need immediate help in implementing an OTP-based user authentication system. The project consists of - - OTP-based user authentication: The user should receive a unique OTP via SMS that they would enter to be authenticated. - React Native integration: The user interface needs to be seamlessly integrated and tested. - Node.js and MySQL: The backend should be designed to handle the OTP generation, validation and user details. I have a tight deadline and need this project completed as soon as possible. Ideal candidates should have: - Strong experience with React Native, Node.js and MySQL - Previous experience implementing OTP-based authentication - Able to work quickly and efficiently Please only apply if you're confident in delivering on time.

AUTO-BIDS WILL BE REMOVED. I'm in search of an experienced developer skilled in Zendesk API integration for a project related to airline claim forms. I will provide you parts of the template and you will add the form, calculations, API integration and ticket creations. The website should be built in Laravel or secure platform. If you know about EC261 claims it makes it way easier to choose you. You will do the following: - Create a form which is predefined through parameters and questions. - Add airline and airport database and organize the data with live search preview. - Calculations based on airport distance and claim form. - Zendesk ticket creation along with correct ticket numer and relevant information. - Multilingual form (Swedish and English). Need someone to...

I'm in search of an experienced developer skilled in Zendesk API integration for a project related to airline claim forms. I will provide you parts of the template and you will add the form, calculations, API integration and ticket creations. The website should be built in Laravel or secure platform. If you know about EC261 claims it makes it way easier to choose you. You will do the following: - Create a form which is predefined through parameters and questions. - Add airline and airport database and organize the data with live search preview. - Calculations based on airport distance and claim form. - Zendesk ticket creation along with correct ticket numer and relevant information. - Multilingual form (Swedish and English). Need someone to start ASAP.

I'm seeking a seasoned developer well-versed in C# and Selenium to create a bot to facilitate automation on Facebook Marketplace. The bot that I'm envisioning would need to perform the following tasks: - Can use multiple accounts, log into several accounts to enter automatic Facebook marketplace li...joined. For unjoined groups that we have searched for, you can auto join. - Can Auto Post to Facebook Group Each feature has Add, Filter, Combobox options, check, delete in the required places Create a License Key in Program For Access Application The ideal candidate for this job has prior experience developing bots for Facebook Marketplace and is proficient in C#, Selenium, SQLite, xpath and FB's API. They should also have a firm understanding of marketplace dynamics...

I urgently need a C++ developer to assist in expanding my project. Your task will be to implement a unique feature which requires capturing low-level screenshots directly from the GPU. The key responsibilities include: - Developing a new, specialized feature that c...implement a unique feature which requires capturing low-level screenshots directly from the GPU. The key responsibilities include: - Developing a new, specialized feature that captures and handles GPU screenshots. - Ensuring the smooth and efficient performance of this new feature. It's beneficial if you have prior experience with similar GPU-related tasks and a solid understanding of C++ programming, API integrations, and screenshot capture techniques. Please bid now if you believe you have the skills and can d...

Comprehensive Chatwoot Deployment with integration and customization tailored to your specific needs Utilizing the following framework and tools: - Ruby on Rails - JavaScript - Vue.js - Docker - Nginx - Node.js API +

Comprehensive Chatwoot Deployment with integration and customization tailored to your specific needs Utilizing the following framework and tools: - Ruby on Rails - JavaScript - Vue.js - Docker - Nginx - Node.js API +

I'm in need of a skillful API expert who can complete the creation of my app on Zapier. I've already managed the authorization part; now what's required is the trigger setup. I have comprehensive API guides at hand and simply need someone with the right expertise to get the trigger implemented. Key Tasks: - Creation of a trigger that will add a new client to a specific list - Implementation of the trigger in accordance with the API guides The trigger that needs to be created will involve gathering and adding the following information: - Name - Email - Phone number I'm seeking a professional with the following skills: - Strong experience in developing APIs - Proficiency in working with Zapier and creating triggers - Excellent attention to detail t...

Hello there, I have an API to manage a platform to sell tickets, and I need a front-end to consum that API. The front-end app, should be built in Angular. Requirements attached. Thanks

I'm looking to develop an online payment website that will support transactions made using credit cards and bank transfers. The payment process should include collecti...to develop an online payment website that will support transactions made using credit cards and bank transfers. The payment process should include collecting the following user information: - Name - Email address - Phone number - ID verification The ideal site should be compatible with desktop computers, mobile devices, and tablets. I need an experienced developer who is familiar with payment gateway integration and security protocols. Experience with ID verification processes would be a plus. As reference, the website should be the same as - escrow.com Please list your estimated fixed price and work durat...

...student data. The data includes student names, grades, schools, coordinator names, coordinator WhatsApp numbers, and student codes. Data Splitting: The freelancer will develop a Python script to split the large Excel sheet into smaller sheets based on schools. Each smaller sheet should contain data for students from a single school. WhatsApp Integration: The freelancer will integrate Twilio's WhatsApp API into the script to send the smaller Excel sheets to the WhatsApp numbers of school coordinators. Each coordinator's WhatsApp number is provided in the Excel sheet. Error Handling: The script should include error handling mechanisms to manage any potential issues during data parsing, splitting, and WhatsApp message sending. Documentation: The freelancer will provide doc...

1) Integrate Xproxy Server into the prebuilt web dashboard as discussed. 2) Admin N Customer dashboard 3) Load demo $ in the customer account and he buys the proxy Proxy gets assigned to the customer from the server with details like http, socks and user pass , and option to change auth from user?ass to IP auth With API button, he can change the user?ass from his dashboard.

I'm seeking an experienced developer from VIETNAM who can proficiently use CodeIgniter 2 framework and Microsoft Graph API for my project. I need someone who has worked with the MS Graph API to collect all items availible from teams (with call register)

...backend infrastructure setup, and frontend design. Responsibilities: Trend Analysis: Implement a system to analyze and extract trends from Google searches stored in an Excel file. Prompt Generation: Develop an automated system to convert trend data into creative prompts suitable for image generation APIs. API Integration: Connect with external APIs like DALL-E or MidJourney to generate images based on the automated prompts. Backend Development: Build and maintain a backend system to handle API calls, manage image and data storage, and ensure efficient data flow throughout the application. Frontend Development: Design and develop a user-friendly e-commerce website where customers can browse and purchase generated images. Database Management: Set up a database to manage use...

I need a Notion API expert to customize my Notion pages for a smoother workflow and integration with other apps. Key requirements: - Integration with other apps: I'm looking to connect my Notion pages with an email client, specifically Microsoft Outlook. The goal is to automatically create draft emails in Outlook whenever new orders are created in Notion. - Automation of tasks: The freelancer will need to create a system that automates the email creation process. This should be seamless and require minimal manual intervention. - Email drafts customization: The only specific requirement for the email drafts will be the Email body. Ideal skills and experience: - Strong knowledge of the Notion API - Experience with integrating Notion with external apps, particularly ema...

...of a skilled WordPress developer with experience in e-commerce development. Key requirements: - I already have both domain and hosting, so your expertise on this matter is not necessary. - The primary goal of my website is to sell products or services online, so you should have proven experience in creating successful e-commerce platforms. - Specific e-commerce features needed include payment gateway integration, customer reviews and ratings, and the ability to post blogs. Your skills should include: - Proficiency in WordPress development - Strong understanding of e-commerce functionalities - Experience in integrating payment gateways - Ability to implement customer reviews and ratings system - Knowledge on how to create and manage blog posts Please provide examples of your ...

I need a skilled Discord developer to help me setup ...created with the following functionalities: - Moderation: The bots should be equipped to perform actions like kick, ban, and mute. - Auto-moderation: The bots should prevent spam. - Custom Commands: Implement custom commands as per my requirements. Additional: - Integration: The custom bots need to integrate with Twitter and TikTok. Ideal skills and experience: - Proficiency in Discord API and server setup procedures. - Experience in creating custom bots with moderation and auto-moderation capabilities. - Familiarity with creating custom commands. - Knowledge of integrating bots with external platforms, specifically Twitter and TikTok. Please provide examples of similar projects you have worked on and the results they...

I'm currently in need of a hotel booking module to be developed for both Android and iOS platforms using Flutter. -We will provide the Api -Company have design the same and integrate the API Key Functionalities: - User Registration: The module should allow users to create accounts and log in securely. - Hotel Search and Filtering: It should provide users with the ability to search for hotels and filter results based on various criteria like price, location, and amenities. - Booking Confirmation: Once a user selects a hotel and submits booking details, the module should display a confirmation message. Skills and Experience: - Proficiency in Flutter for cross-platform mobile

Looking for a Google Cloud Platform (GCP) expert who can assist with Cloud Functions and Vision API integration and deploy function on google cloud - Your main focus will be integrating Vision API for images batch processing and setting up Cloud Functions. The urls of images will be in excel file in google cloud. The parse result to be placed in columns next to url column. - The data primarily processed with text detection. Ideal Candidate: - Proficient in GCP services, specifically Cloud Functions and Vision API. - Experienced in setting up GCP services for one function. - Skilled in implementing Vision API for image processing. - Strong understanding of data processing in GCP.

I am looking for a skilled and experienced Full stack developer with Hands-on experience in Java Hands-on experience in Angular/ REACT Hands on experience on AWS RDS/AWS S3/Oracle/AWS Athena/ SQL In-depth knowledge in Core Java, Spring framework and RESTful API Services, Apache Camel, CI/CD Jenkins, Containerization Experience with AWS Cloud and its services like EC2, Athena, Lambda, S3, SQS and Cloud Formation Experience in writing JUnit test cases Problem-solving abilities

I am looking for a skilled web developer who can create an e-commerce website from scratch...create an e-commerce website from scratch that focuses on user experience. Project features should include: - User Registration and Login: The website should have a secure, easy-to-use registration and login system to ensure security for our clients. - Payment Gateway Integration: To ease the purchasing process, a payment gateway should be integrated to handle all transactions. Specific skills and experience required: - E-commerce website development - Experience with user registration and login systems - Experience with payment gateway integration Please note that product types to be sold on the website are yet to be determined. This information will be provided later durin...

...with multiple APIs. The main purpose of this module is to enable seamless communication with various services including calling contact, Google Meet, SMS, and Email. Key Details: - The module should include a custom API integration for calls, Google Meet, SMS, and Email. - For contact calls, the primary functionality required is a 'Click to call' API. This should allow users to conveniently initiate calls directly from within the system. Skills and expertise that are required for this job include: - Proficiency in CodeIgniter and understanding of MVC framework. - Prior experience in integrating APIs, preferably for contact calls, Google Meet, SMS, and Email. - A solid grasp of web development and ability to create a user-friendly interfac...

I'm in immediate need of a Python Django developer. Even though the specific tasks were not outlined, experience in database management, user authentication, and API integration would be advantageous. Whether you have front-end development experience is not crucial, but it could be a plus. The purpose of the Django project has not been specified, but skills that cater to building a website, creating web applications, or backend development for an existing project could be beneficial. Please detail your previous experience, as it is the deciding factor for this job.

I'm looking for an expert in setting up a Kannel SMS Gateway with a SIM box. The purpose of this project is to send marketing messages on a large scale of between 1,000 and 5,000 daily. The messages will not be text-only, they will include both images and links as well. Ideal Skills: - Extensive experience with Kannel SMS gateway and SIM box configuration - Understanding of marketing message composition with text, image, and link - Knowledge of Bulk SMS sending Key Requirements: - Ability to send between 1,000 and 5,000 SMS daily - Ensure efficient delivery of all text, image, and link content - Optimize the system while maintaining high deliverability rates Your ability to effectively set this up can make a huge difference in our communi...

I'm in need of a skilled NodeJS developer who has already integrated the Telr payment gateway. Key Points: - I have an active Telr payment gateway account, and my main objective is to use it for processing online payments for servicesm with refund/cancelation. Ideal Skills and Experience: - Previous experience with Telr integration is a must. Having a working knowledge of their API and the ability to seamlessly integrate it with my NodeJS backend.

...PHP to develop a web application. The primary functionalities I'm looking for in this project are around the API and the ability to handle data updates. Key Requirements: - Expertise with PHP: The ideal candidate should have a strong background in PHP, with the capability to develop robust and efficient code. - Full Stack Proficiency: The project requires both frontend and backend development. Proficiency in both areas is crucial for the success of this project. - API Development: You should have experience in developing APIs, especially around data updates. This is a core part of the requirements. The project is focused on developing a web application and ensuring that the API is capable of handling data updates effectively. If you have a strong background...

...and other team members to ensure alignment of the database design with business requirements and analytics goals, within the stipulated time frame. #Requirements: - Extensive experience as a Data Engineer, Database Architect, or similar role with a strong focus on rapid project execution. - Expertise in handling tight deadlines and delivering complex projects quickly. - Strong understanding of API integrations and experience with RESTful services. - Proficient in relational database design and development, preferably with experience in SQL and NoSQL databases. - Experience with ETL tools and processes under strict time constraints. - Familiarity with CRM and MAP platforms like Salesforce and HubSpot. - Capable of creating detailed entity-relationship diagrams and data flow diagr...

I'm looking for a skilled Codeigniter developer to help me with a specific task. - The Purpose: I've already got a Codeigniter project up and running but I'm looking to expand it by adding new modules. - The Module: Specifically, I need help with integrating a new Fees Payments system. - Payment Gateway: The system will need to process Credit Card and Cash Payments. - Skills: I'm looking for someone with a strong understanding of Codeigniter framework, and experience with the aforementioned payment methods. If you have the expertise required, I would love to hear from you.

Good morning, for my client i need to make an implementation on WooCommerce - on the store the client selects a product and then the website sends a query to the website - provide the number of products on the network. The system will then return a list of places with available quantities of a given product. The system API is in JSON format. An authorization token is required to execute the query.

I am seeking a proficient Flutter developer to create an application for both iOS and Android platforms, with integral backend development using PHP/MySQL. Key Responsibilities: * Develop a Flutter app for both Android and iOS platforms. * Backend development of the app using PHP/MySQL. * Creation of Data fetching APIs for seamless user-experience. I...the app using PHP/MySQL. * Creation of Data fetching APIs for seamless user-experience. Ideal Skills: * Proficient in Flutter * Extensive experience with PHP/MySQL backend development * Skilled and knowledgeable in creating Data fetching APIs If you have proven experience in similar projects, I am willing to discuss the details further. Your understanding and expertise in Flutter development and API creation is paramount for thi...

I need a windows or online php application , whatever you do prefer that i will be able to : Connect multiple Bybit API keys *Add Key/Account - Remove Key/Account *Add notes for each API KEY *Have a check button that when i click it will get the available USDT balance from all connected accounts.

I'm looking for a mobile app developer to c...be available on both Android and iOS devices. Key Features: - User Registration: Users should be able to create accounts and log in securely. - Service Provider Registration: A feature that allows service providers to register and offer their services on the app. - Service Booking: Users should be able to browse available services, select, and book them. - Payment Integration: A secure payment gateway should be implemented to facilitate transactions between users and service providers. Ideal Skills and Experience: - Proficient in cross-platform app development - Knowledge of creating user-friendly and engaging interfaces - Experience in integrating secure payment gateways - Previous experience in developing service-oriented apps w...

I'm seeking a highly skilled flutter developer possessing in-depth experience with Laravel to contribute their expertise to my social media application. Here are the key features expected: - Main UI is completed with flutter. - Laravel backend is almost 70%. - to be implemented: integrate the API into the current UI. social login(FB, twitter, tiktok, apple) inapp and banner ad audio combine with BGM. support the deploy on google play and app store HOW to apply. - please send me the FLUTTER APP URL on google play and app store and code screenshot of that App. (the proposal without the screenshot will be declined) - send me the laravel system URL and screenshot.

Required competencies : Wordpress Inspiro theme Exclusion /Out of scope : No payment gateway SEO Design of logos / photos / icons Volume : 17 pages Number of photos/icons : 140 Number of blocks : 55 Number of videos : 5 We are looking for a WordPress developer to create a new website using the Inspiro theme. The ideal candidate will have prior experience with WordPress and the Inspiro theme, and a portfolio showcasing past projects. Project Details: Objective: Build a complete website using WordPress with the Inspiro theme. Scope: The website will consist of approximately 17 pages. Content and a basic design model from Canva will be provided, which should be closely followed to match our vision. Please note, the website content will be in French; however, proficiency ...

I'm looking for a talented Node.js/Express developer to help me with the backend of my website. The frontend is already set up, and now I need a skilled individual to take care of the backend, particularly for the contact page API. This is an exciting opportunity to showcase your skills and work on a project that's primed for success. Key Requirements: - Develop a secure and efficient contact form submission system. - Implement an intuitive email notification system for incoming messages. - Ensure the backend integrates seamlessly with the already established frontend. Ideal Candidate: - Proficient in Node.js and Express with a solid portfolio of past work to support your skills. - Experienced in developing contact forms and email notification systems. - Strong understan...

...platforms. This application should feature a user registration and login capability, thereby creating personalized experiences. Here's what is needed: Features - User registration and login feature for personalized use. - Facility to book bus tickets. - Support for credit card and debit card payments. Ideal Skills - Proficiency in Android and Web development. - Excellent understanding of payment gateway integration, specifically debit and credit cards. - Experience in developing applications with user registration and login features. - A portfolio with similar apps might give you an edge. This project demands a high degree of user-friendliness, secure transactions, and flawless functionality. Any suggestions to enhance user experience or functionality are welcome. The...

Hi, Need a web dashboard for admin and customer. I am using 3proxy (Xproxy) as a proxy server API list - Main function will be the same with Admin site: Adding multiple 3proxy (xproxy servers to the web dashboard - API) + Create proxy via API + Add proxy from other suppliers + Rotation Link to change the IP of the port. + Validity of proxy - can be edited + User Management: The ability to add, remove and modify user accounts. +Billing and Subscription Management: Tracking customer payments, subscriptions, and related data. Proxy Status Monitoring: Real-time monitoring of proxy status. Customer dashboard: + Dashboard to overview: APIKey, APIkey count, account balance, Change Password

...data, both free and paid. This includes a comprehensive evaluation of data providers to ensure the data's relevance and quality. The output at this stage will be an Excel table summarizing the research, which will include provider names, links to data or registration, pricing (if it is a paid source), additional requirements from the provider, and descriptions of the data. We anticipate identifying up to 10 data providers. 2. Evaluation and Registration: We will evaluate the providers, register for their services, and handle payments if the data is not free. We will then provide the freelancer with access for further data acquisition. 3. Real-Time Data Acquisition: The freelancer will create a convenient method to acquire real-time data for prediction purposes, like...

...development, and API integration. If you're well versed in PHP and JavaScript, and have extensive experience working with , this could be the ideal project for you. Key Tasks: - Backend development: I require a skilled developer to build and maintain the server-side of the web application. - Frontend development: I need assistance with the development and maintenance of the client-side of the application. - API integration: Experience integrating various APIs is a must for this project. Specific Features: - User Authentication: You'll be responsible for implementing a secure and user-friendly authentication system. - Database Integration: You should have a strong background in database management and integration. - Payment Gateway Integration: Experience...

I need a WordPress plugin that can handle shipping details seamlessly - ensuring timely order processing and customer updates. Key Requirements: - Mark Orders...freelancer has: - Proficiency in WordPress plugin development - Experience with Sequell or similar shipping management systems - Capability to implement automatic and manual order marking features - Ability to integrate email and in-site notification systems API DOCUMENTATION : ENVIRONMENT : TEST SERVER API TOKEN : cf3c46a2d003ac66c412673ba38dca3b END POINT : Address code/Storecode: For Ex : scj office NOTE: - It's recommended that clients must first do their R&D using test server API key and endpoint and only after a successful integration they must move using Production Key.