Opensocial api php examples jobs

I am looking for an experienced Android developer to create a doctor's appointment application. The app should include the following features: - Login and Registration: Users should be able to create accounts and log in securely to access the app's services. - Booking and Scheduling Appointments: The app should allow patients to book appoin...knowledge of in-app booking and scheduling features - Prior experience with push notifications and reminders - Understanding of creating smooth user interfaces for easy navigation - Knowledge of secure handling of personal data in a medical context While the app will not have a built-in chat feature, ensuring secure data handling and a seamless user experience are top priorities. Please provide examples of similar projects you'...

...and logo, Contact information, and Services provided Ideal Skills and Experience: - Extensive experience in business card design and layout. - Understanding of minimalist, professional design styles. - Proficiency in leading design software, such as Adobe Illustrator or Adobe Photoshop. - Previous work samples of professional, double-sided business card design. Please include a portfolio or examples of previous business card designs in your bid. Attention to detail will be considered a significant asset for this project. Can't wait to see your designs! I have attached a similar accounting business card how I want my business card to look. The second attachment that shows the logo “NJÆ Accounting” is the business name and logo of my business and I would ...

I am seeking a proficient Laravel developer to inject new life into my website with innovative features. I am focused on adding functionalities such as user authentication, payment gateway, and API integration. While the details about the specific features are still being finalized, the core objective here is to enhance the user experience of the website. Ideal skills and experience include: - Expertise in Laravel and related software - Experience with implementing user authentication and integrating APIs. - Proven ability to integrate payment gateways - An understanding of UX/UI principles to guide enhancements. A potential developer should offer suggestions to add unique and engaging aspects to my website, grounded in their understanding of my core objectives. Your input and...

I am seeking a skilled Solana / Rust developer with experience in creating crypto projects to help me build a raffle platform. Key Project Details: - I need a robust raffle platform that includes a random winner selection system, a ticket purchasing system, and a mechanism for distributing prizes. - You will be working with my specific design in mind, ...Skills and Experience: - Proficient in Solidity development - Previous experience with crypto projects - Experience with developing raffle or gambling projects is a plus - Strong attention to detail and the ability to implement a specific design If you are a developer with a good understanding of Solidity, crypto projects, and raffle systems, I would love to hear from you. Please provide examples of similar projects you have ...

I am looking for a developer proficient in Puppeteer to automate specific processes on Facebook. Tasks involved: Convert a script already written in Python. It does the followi...captured includes; links, emails in both posts and comments, images, videos, and other details like links in comments. Frequency of Extraction: - The data extraction process is not fixed to any specific time frame; it should run on-demand, according to our needs. Ideal Skills: - Strong knowledge of Puppeteer - Experience with Facebook API - Proven track record in automation - Solid experience in data extraction. Please make your bid by providing examples of similar projects you've completed in the past. Your understanding and approach to this project will help me ensure this project is...

I'm seeking a skilled developer or team to build an NLP website. This website's main feature should enable users to gather consensus on products based on YouTube videos. Key Functionality: • Implement a mechanism for analyzing the sentiment of user comments and reading video subtitles. I am open to suggestions for the appropriate s...open to suggestions for the appropriate sentiment analysis algorithms to use. The ultimate aim is to create an engaging platform that provides accurate sentiment data on products based on user engagement in YouTube videos. Ideal Skills: • Strong knowledge in Natural Language Processing • Experience in Sentiment Analysis algorithm • Full-stack web development experience • Familiarity with YouTube API integration...

I need an experienced digital marketer with significant SEO knowledge and proven results. The professional will undertake tasks involving Keyword Research, On-Page and Off-Page Optimization which are crucial SEO components. In marketing my product to a B2C audience, the ideal candidate should have extensive experience in devising and implementing effective strategies...Driving targeted B2C traffic to improve conversion rates - Maintaining consistent engagement on social media platforms - Developing effective email marketing campaigns - Creating compelling content that resonates with the audience Successful bids will provide evidence of their expertise in these areas and demonstrate a thorough understanding of effective B2C consumer targeting. Previous work examples will be highly...

I need a medium-sized ad for my lawn care service, designed to be used in print. The design should be fun and vibrant, with a green thumb type of background. In the center of the ad, I would like a picture of myself pushing a lawn mower. Key Tasks: - Design a medium-si...(728x90 pixels) - Ensure that the ad has a fun and vibrant style - Incorporate a green thumb type of background - Include a central picture of me pushing a lawn mower Ideal Freelancer: - Experienced in creating print advertisements - Proficient in using graphic design software - Capable of working with specific design requests - Creative and able to produce a fun and vibrant design Please provide examples of your previous work when applying. I'm looking forward to collaborating with a talented professional o...

I'm seeking a proficient Python developer with experience in FastAPI to assist in integrating it into my ongoing project. Understanding and experience with web API frameworks is essential. Key Deliverables: - Integration of FastAPI into current Python project - Set up and configuration as per best practices - Practical demonstration of FastAPI performance capabilities Ideal Skills: - Proficiency in Python programming - In-depth knowledge and experience in FastAPI - Understanding of web API frameworks - Strong problem-solving skills Note: While I did not provide specifics on implementing FastAPI features such as authentication, data validation or database integrations, the freelancer should be well-versed in these areas as they might be needed during the course of t...

I am seeking an experienced website developer to design and establish an engaging online presence for my new venture. My website's primary function is to provide information and resources about my business's offerings. Key requirements and considerations for the project include: - Primarily focused on providing descriptions about my products/services - Embodyin...Embodying the essence of my brand through professional design - Attracting a wide array of audiences as the target demographic remains open Ideal candidates will have a proven track record in building user-friendly websites that offer clear and concise information about products/services. A deep understanding of web design and branding is also desirable. Please only apply if you can showcase relevant examples of...

I am in need of a backend developer with expertise in Node.js, , and JavaScrip...authentication - Implementing user registration functionality - Integrating login using email and password - Setting up two-factor authentication for enhanced security The ideal candidate should have: - Proficiency in Node.js and - Previous experience with API development, specifically for user authentication - Understanding of law firm project requirements - Ability to ensure security and efficiency in API development - Familiarity with third-party integrations, specifically concerning law firm projects. Please provide examples of previous similar projects in your proposal. Your expertise in creating APIs, particularly for user authentication, will be vital to the success of this proj...

I am looking for an experienced 3D animator to bring my company logo to life. Desired Expertise: - Proficient in 3D animation - Expert in incorporating an existing color scheme into an animation Details: - The animation should adhere to the company's existing color scheme. - The animation should exude a sense of professionalism and reli...sense of professionalism and reliability, reflecting the company's brand identity. - Our company is specialized in Car Shipping - In the animation we would like to add the idea that we are specialized in this industry This project will require a creative approach and meticulous attention to detail. Your portfolio should demonstrate previous work which closely matches this brief. Please include examples of 3D logo animations you h...

I am seeking a qualified individual to create a complete architectural blueprint for a residential building. The blueprint must encompass the whole building, including every room and outdoor area. Expertise in developing detailed, precise, and efficient architectural plans is essential. A background in residential projects would be advantageous. Please provide portfolio examples of previous blueprint projects in your proposal. Skills desired include: - Proficient in relevant software (e.g., AutoCAD, SketchUp) - Strong understanding of architectural standards and building laws - Prior experience in residential building designs - Attention to detail, - Good communication skills for any necessary clarification.

I'm in need of a professional to provide me with a construction plan for a residential complex containing duplexes and apartments. The chosen designer will have a strong understanding of minimalistic style, creating space-efficient designs that balance living areas and bedrooms. Key Project Consi...and bedrooms. Striking a harmony among these features is crucial. Ideal candidates will have a solid background in architecture or a related field and demonstrated experience working with residential design, particularly duplexes and apartments. Having previously designed in the minimalistic style, and understanding of local building regulations will be preferred. Your proposal should contain examples of past work, particularly projects that show your ability to balance living spac...

Title: Seeking Experienced Instagram Ads Specialist for Coaching and Consulting Business...Demonstrated ability to work independently, meet deadlines, and deliver results consistently. 8. Experience with other social media platforms and digital marketing channels is a plus. If you meet the above criteria and are passionate about driving results through Instagram advertising, we would love to hear from you. Please provide details of your relevant experience, including case studies or examples of successful campaigns. Additionally, share your proposed approach to managing our Instagram ad campaigns and your expected timeline for achieving results. We look forward to collaborating with a skilled professional to elevate our online presence and drive business growth through Instagram ad...

I'm in need of an experienced developer to create a Google Spreadsheet plugin for me. This is somew...Able to push through the complexities of Google's Workspace and create a plugin which is able to export mixed data types, both numerical and textual, from the spreadsheet. * Knowledge about data conversion as that is another main feature of the plugin. * Utilize webhook API in exporting data from the spreadsheet. Ideal Expertise: * Experience in creating Google Spreadsheet plugins. * Knowledge and experience in working with APIs. * Well-versed in data exportation and conversion. Please note, more details on the webhook API integration were not provided by the client. However, it's assumed that a developer with sufficient experience in this domain will underst...

I'm looking to hire an experienced SharePoint developer for my business process streamlining project. I need to create automatic SharePoint flows to enhance efficiency in the business. We want to move to digital with customer contra...flows for various undefined actions/processes. - Employ your expertise to decide which actions/processes best fit automation. Skills and Experience: - Extensive SharePoint development experience - Proven track record in SharePoint automation, particularly in business streamlining. - Strong decision-making skills in proposing which actions/processes to automate in SharePoint. Please bid with examples of similar SharePoint automation projects you've completed. This is an excellent opportunity to contribute directly to the efficiency of our ...

I'm in need of a 3d animator for my game project RPGish. i can provide models, and i'll provide examples on what i need made, but a basic example of it's implementation is linked below. needs to be able to take instructions well, as i have a distinct vision, and i don't have a very high budget, so the cheaper the price, the better. thank you

I want a affiliate webshop in spanish language, with fishing equipment. I want to see examples of previous work.

I want an android developer with java, php, laravel, api Working on android studio and laravel app control panel

This error has been traced back to the Apache webserver, it is a PHP and WordPress error "Please check that the mysqli PHP extension is installed and enabled." Key tasks for this project include: - Identifying the root cause of the 'Internal Server Error' message - Resolving the issue promptly to restore the website's functionality Ideal Skills and Experience: - Proficiency in PHP and Apache webserver - Strong experience in debugging and resolving 'Internal Server Error' issues - Excellent problem-solving and communication skills

As the client, I am in need of a dedicated and talented scre...following the journey of one central character. - The ideal candidate will have: - Robust experience in writing action-packed screenplays - An ability to accurately depict historical settings - The knack for developing complex singular characters I urge all potential freelancers to demonstrate proof of these qualifications in their bid. I would greatly appreciate any examples of comparable works that you have previously completed. This will help give me a clearer understanding of your writing style and how well it may blend with my project. I wrote a short story that i want to convert into a screenplay and then sell to Netflix. It's a young adult style story relating to secret KGB agen...

...built with PHP and must have the ability to interface with client information in QuickBooks Online. Key Features: - **Task Assignment and Tracking**: This is the core functionality that I require. The system should allow for the creation of tasks, assignment to team members, and tracking of progress. Progress updates should be emailed to the client as the status changes - **Notifications and Reminders**: I need the system to send out notifications and reminders to the team members about their tasks and deadlines. This is crucial for keeping the workflow smooth and on track. Ideal Freelancer: - Proficient in PHP and web-based application development. - Prior experience in building task management systems, preferably for small businesses. - Familiarity with QuickBooks ...

I am looking for a python script which can take input song lyrics and convert it into video You can use any third party API to achieve it i just need the script to convert song lyrics to video

I'm looking for a skilled web developer to create a comprehensive portfolio website for me. Key Requirements: - Portfolio website: The...and capabilities. - Special features: While I don't have specific features in mind, I'm open to suggestions on how to make my portfolio stand out. Ideal Skills and Experience: - Strong portfolio: Please provide examples of your previous portfolio websites. - Web design: A clean, professional design is a must. - UX/UI design: The site should be easy to navigate and visually engaging. - Communication: I'm looking for someone who communicates effectively and responds in a timely manner. If you have experience in creating successful portfolio websites, please reach out with examples of your work. I'm excited to se...

...maximum of 7 days, so they must be suppliers who ship from Aliexpress warehouses in Europe, preferably from an Aliexpress warehouse located in Poland. I need to synchronize the product database of this supplier with my store, so I need the supplier's number, its products (SKU / GETIN), quantity and current price. API or xml synchronization. I will make wholesale purchases for my warehouse, but access may be via the Alliexpress dropshipping platform. Ideal Skills: - API/database creation and handling - Aliexpress XML / Scrapping - E-commerce experience The database should gather the following data fields for each product from selected Aliexpress suppliers: - Supplier id - Product SKU - Product name - Product description - Product image - Product price - S...

I'm looking for a talented NextJS front-end developer to help with the design and implementation of...implementation of an email campaign platform. Key Requirements: - Strong experience with NextJS - Proficient in Shadcn UI for design implementation - Proven track record with API integration - Familiarity with SMTP for email handling and sending The project is specifically focused on the front-end, so your expertise in creating a responsive, visually appealing design is key. The main goal is to have an efficient and user-friendly interface for our email campaign platform. If you have a good eye for design and a solid understanding of API integrations and advanced NextJS concepts, I'd love to hear from you. API collections will be provided one initial co...

I'm looking for an experienced widget developer who can create an inline code widget to be used with the ChatGPT API. The widget should display the results from this API on a specific page of my website. Here are specific requirements: - Search Box: A simple search box like google search bar - Display Area: display area should include text and link responses from chatgpt API. Skills and Experience Needed: - Expertise in widget development and inline code - Deep understanding of the ChatGPT API - Strong grasp on UI/UX for effective search box design

...should demonstrate the following: - In-depth familiarity with Power BI and its functionalities - Experience in creating dynamic and interactive reports, dashboards, and data visualizations - Proficiency in Power BI RestAPI, DataFlows, PowerShell -Write scripts or API queries to pull data from the Power BI service about each dataflow, including refresh history to get durations, and status of incremental refresh. - Ability to translate complex data into clear, compelling visuals -Develop the actual Power BI report, integrating API data sources, and setting up refresh schedules for the report itself to ensure data is up-to-date. Applications should include a detailed project proposal showcasing how you plan to address and accomplish the tasks outlined. Please note that ...

I'm looking for a skilled photo editor to enhance and refine my personal photos. Here's what I need: - Color Correction: I need you to adjust the colors in the photos to make them more vibrant and appealing. - Retouching Blemishes: There are a few imperfections in the photos that I'd like you to remove. The final deliverable should be...Blemishes: There are a few imperfections in the photos that I'd like you to remove. The final deliverable should be digital files. So, you should be able to provide high-quality, edited JPGs or PNGs. Ideal skills for this job include strong proficiency in photo editing software like Adobe Photoshop, Lightroom, or GIMP. Experience in color correction and blemish removal is a must. Please provide examples of your previous work ...

Please Sign Up or Login to see details.

Hello! We're in search of a logo for our organic olive oil company, 'Azeite da Torre.' We're looking for a design featuring a beautiful olive tree that reflects our brand's luxury and organic nature. Attached are some olive tree examples for inspiration. Good luck to all participants, and thank you for your submissions!

I need an experienced Laravel developer to undertake crucial tasks within a large-scale project over a two-week timeline. The Laravel-specific requirements are as follows:- 1. Fix the Home Dashboard to display real data instead of dummy data in Laravel. 2. Implement form dat...them in Laravel. 30. Integrate SMTP for email sending in Laravel. 31. Enable editing of email templates and sending emails with edited images attached in Laravel. 32. Investigate and resolve any code errors and relationship issues between site visits and jobs, ensuring the proper attachment of site visits to jobs in Laravel. I expect you to integrate these features into a CRM and ensure seamless API integration. Proficiency in Laravel and experience in handling similar large-scale projects will be highly adv...

...carefully before bidding. In a frontend web design to be converted to PHP/HTML. This is a shipping website with one main function: A shipping calculator. Custom built, no API. Primary objective: 1) Customer chooses from country and to country (Very similar to this website's interface: ). 2) After the customer gets a rate from two couriers only (UPS and FedEx) and multiple shipping services, the customer provides more information about three things: A) The sender. B) The receiver. C) The package. Then a customer checks out using Paypal. Secondary objective but not as important or could done possibly at a later phase: 1) Package tracking which possibly needs an API. 2) Basic signup and sign-in menu similar to this of ( - Check

...ensure the website renders correctly on Safari 13.1.2. a previous designer said I have thoroughly checked it. Please note that 13.1.3 is an older version of Safari; the latest version is 17.4.2. Due to the lower version, Safari is not converting dynamic content to static properly, hence these layout problems are occurring. As you may know, the latest PHP versions have been released, so the lower version does not support the latest PHP version properly. Apple has resolved all these issues in their latest version; there are no issues present in their latest release. 6:19 AM Key responsibilities include: - Diagnosing and resolving text alignment, image display, and layout problems specifically on Safari version 13.1.2 - Running tests to confirm that all changes made ha...

I'm seeking an experienced WooCommerce expert to help with my online store. The project entails adding and configuring 50-100 products, most of which have unique variations. Key Responsibilities: - Product Addition: Adding 50-100 products to the WooCommerce store. - Variation Configuration: Configuring unique product variations,...Configuring unique product variations, such as size, color, and material. Skills and Experience Required: - Proficiency in WooCommerce: Extensive experience with setting up and configuring products. - Attention to Detail: Need to ensure all products and variations are accurately added. - eCommerce Expertise: Understanding of best practices for online stores and product listings. Please include examples of similar projects you've completed in t...

I'm in need of a skilled FlutterFlow developer to create a web application that can generate PDF reports from documents stored in Firestore. Key Requirements: - Platform: FlutterFlow inside an already existing app. - PDF Customization: The reports need to have a moderate level of customization with specific layouts. - Generation F...from specific document layouts. - Understanding of user-triggered, on-demand report generation. - Knowledge of building Custom Functions or Actions within FlutterFlow. - Ability to advise on the best implementation strategies within FlutterFlow This project requires attention to detail, a solid understanding of FlutterFlow, and a good grasp of PDF generation from dynamic data. Please provide examples of similar FlutterFlow projects you've wo...

I'm in need of a professional graphic designer to layout an event conference booklet. Here are the specifics: - The booklet is 30-40 pages in length. - The content for the booklet has already been compiled, therefore, your main task will be to organize and layout this content in a visually en...essential. - This project has a tight deadline. I require it completed ASAP, within 7 days to be exact. Ideal Skills: - Experience in graphic design specifically for conference booklets. - Proficiency in using design software. - Attention to detail and organizational skills. - Ability to adhere to tight deadlines. - Experience crafting classical design elements. Please provide a portfolio or examples of past work, especially those with a classical design outlook. Looking forward to ...

...my web-app: PHASE 1 - Adding few features and fixing current bugs, so an updated version of the product can be launch. PHASE 2+ - Feature development including implemention of designs already made via Figma, maintance and continue enhance the platform, optimization of performance and scalability. - SMS and WhatsApp API integration. - integrate Payment Methods like PayPal and gateways. The ideal developer needed to be with a strong proficiency in GITHUB, AWS, experienced PHP developer, experience with Laravel, MySQL (RDS), Vue.js, EC2 (Ubuntu). IMPORTANT: Thee current version needed some improvments by UX/UI and fufunctionality. Prior expercience in user interface design needed as well. ~ - Please mention recent projects you did. - Fluent English needed so we can comm...

I'm looking for a skilled developer to create a specific API endpoint using Postman. - The purpose of this endpoint is to retrieve transaction records. - The endpoint should return the retrieved data in JSON format. The ideal candidate should have: - Proficiency in Postman and API development - Previous experience with data retrieval APIs - Strong understanding of JSON data structure Please provide examples of similar projects you've worked on.

I'm in need of a comprehensive home plan for a large plot that will host a 1-2 bedroom home. Key Requirements: - Design a home that fits well on a large plot - greater than 1/2 acre. - Create a layout for a 1-2 bedroom home that maximizes space and flow. Skills & Experience: - Proven experien...Create a layout for a 1-2 bedroom home that maximizes space and flow. Skills & Experience: - Proven experience in designing and planning residential homes. - Understanding of space optimization and flow in home design. - Ability to work with large plots to create a harmonious design. - Strong communication skills to understand the vision and translate it into a feasible plan. Please provide examples of your previous work, especially if they relate to large plot home design...

...music videos - Ability to work collaboratively and welcome suggestions for themes - Expertise in animation, live-action filming or lyric video production - Strong storytelling skills Here's a playlist of tracks by myself - most or all of which would require a video of some sort: FJ - Therapoetry (working title) Here are also a few links of examples of lyric videos produced by a previous designer who proved to be unreliable and incompetent: FJ - Still Searching: FJ - BunFire Night: Please bear in mind that the entire playlist (currently 9 tracks) will need to be

I have a PNG logo that needs the background removed for transparency at the letter areas and at the left mirror area (between mirror and RV). This must be done for both versions, color and black and white logos. Ideally, I'd like the logo to be versatile for both di...the logo into multiple sizes suitable for web and print - Ensure the logo retains its quality and integrity post-processing I'm looking for a freelancer with: - Strong experience in graphic design, specifically in logo editing - Ability to produce high-quality images suitable for both web and print - Proficiency in using image editing software like Adobe Illustrator or Photoshop Please provide examples of similar work you've done and a rough estimate of how long this task might take. Feel free to ask i...

Looking for experience developer who can develop for me an arbitrage trading system. The requirements are the following: Connect 20 crypto exchanges (CEX) there API so can watch the prices of 100 cryptocurrencies which we will provide. Allow us to connect crypto exchanges accounts API with the arbitrage trading system and execute the trades by a single click. The system is for personal use. More details via call.

...the first step. Thank you! My Requirements are: -Combine the settings of the programs mentioned (ngPost, Nyuu, NewsUP, SabNZBd) -download functions like the program "sabNZBd" -for Windows (With a proper installation routine and as an .exe file!!) -Python -NNTP (Network News Transfer Protocol) -modern GUI and a nice logo :) -source code, commenting on the source code properly ! -expandable ! -API usage -work with rss feeds -Periodic check if files still complete -option for hidden autostart -The program is supposed to download a certain sort of links like url use with an browser or pdf with an pdf viewer -rar/7zip support -multipar support () -automate posts by scanning folder(s) -auto delete files/folders once posted -full obfuscation of the Article

...efficient and user-friendly search platforms. Here's a snapshot of what's on my wish list: Skills and experience: - Knowledge of HTML (as stated, but ideally also Python, JavaScript or PHP). - In-depth knowledge of NNTP (Network News Transfer Protocol) - Good track record of creating well-documented, bug-free code - Ability to implement basic security measures to protect user data Project specifics: - Search engine is already functional, only improvements and a few customizations will be needed - Changes and adjustments are needed in the admin area, e.g. editing newsgroups and adjusting retention - A simple API for the search still needs to be implemented - Standardize the design of the website - Development of an extended search function for navigation in Usen...

I need a PHP expert to integrate the Yocco Payment gateway into my existing PHP application. The primary users of this integration will be customers making purchases. Here are some specifics: - Should be able to process recurring subscriptions - A strong background in PHP and payment gateway integrations, specifically Yocco Payment, is required - Previous work with similar PHP applications will be particularly valuable - Familiarity with mechanisms for transaction confirmations via recurring subscriptions is a must-have The successful applicant will begin with this payment gateway and, contingent on excellent performance, proceed with the rest.

I'm looking for a skilled developer to create a Microsoft SharePoint web application that focuses on business intelligence. Key Requirements: - The primary goal of this web application is to provide real-time reports. - The design should be user-friendly and effic...with a focus on data visualization. Ideal Skills: - Proficient in Microsoft SharePoint with experience in building business intelligence solutions. - Knowledge of real-time reporting tools and techniques. - UI/UX design experience to create an intuitive and visually appealing interface. - Strong problem-solving and communication skills to understand the project requirements. Please provide examples of similar projects you've worked on or your expertise in creating SharePoint-based business intelligence s...

I'm looking for an ex...CA. The campaign will focus on Facebook and Instagram. The ideal marketer for this project: - Has experience with event promotion on Instagram and Facebook. - Understands how to build a friendly and conversational style consistent with our brand. - Can craft and execute a targeted social media strategy to attract local meditation enthusiasts in San Francisco. In your proposal, please share examples of projects where you used social media to successfully increase event attendance. This will help me understand if you're a good fit for this project. The success of this project will be measured by the increase in event attendance. If you are excited about meditation and have experience in boosting event attendance using Facebook and Instagram, this...

I'm in need of a C program that can communicate with a REST API and retrieve data in JSON format. Key Requirements: - The program should be able to establish a connection with the specified REST API and retrieve data in JSON format. Ideal Skills: - Proficiency in C programming language - Experience with REST APIs and JSON data format - Strong understanding of data retrieval techniques Please note that I'm only looking for a C program that can successfully retrieve data from a REST API in JSON format.