--- title: RESTful JSON API Reviews meta\_title: 'RESTful JSON API Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter 18 reviews by the users' company size, role or industry to find out how RESTful JSON API works for a business like yours. aggregate\_rating: rating\_value: 4.8 review\_count: 18 scale: '5' date\_modified: '2026-08-07' parent\_category: name: Financial Services url: https://www.g2.com/categories/financial-services --- # RESTful JSON API Reviews & Product Details The Open Bank Project's RESTful JSON API is a comprehensive open-source solution designed to facilitate secure and standardized access to banking data and services. By providing over 300 RESTful APIs, it enables developers to create innovative financial applications that interact seamlessly with banking systems. Key Features and Functionality: - Extensive API Catalog: Offers a wide range of APIs covering various banking functionalities, including account information, transaction history, payment initiation, and KYC checks. - Standardized Data Access: Utilizes RESTful principles and JSON format to ensure consistent and efficient data exchange between applications and banking systems. - Developer-Friendly Tools: Provides an API Explorer for developers to browse, discover, and test endpoints, facilitating a smoother development process. - Internationalization Support: Incorporates an internationalization framework (i18n) to adapt applications to different languages and cultural contexts, enhancing global usability. Primary Value and User Solutions: The RESTful JSON API addresses the need for secure, standardized, and efficient access to banking data, enabling developers to build a diverse range of financial applications. By offering a comprehensive suite of APIs, it empowers developers to create solutions such as personal finance management tools, online accounting services, savings applications, and peer-to-peer payment platforms. This fosters innovation in the financial sector and enhances the digital banking experience for end-users. * * * Seller [Open Bank Project](https://www.g2.com/sellers/open-bank-project) Discussions [RESTful JSON API Community](https://www.g2.com/products/restful-json-api/discuss) Show More ## Top-Rated Alternatives [ ![Merge Unified](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Merge Unified") Merge Unified 4.7/5(253) ](https://www.g2.com/products/merge-unified/reviews) [ ![Stripe Connect](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Stripe Connect") Stripe Connect 4.3/5(249) ](https://www.g2.com/products/stripe-connect/reviews) [ ![Finch](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Finch") Finch 4.7/5(63) ](https://www.g2.com/products/finch-finch/reviews) [ View All Alternatives ](https://www.g2.com/products/restful-json-api/competitors/alternatives) ## User Insights Average based on 18 real user reviews. [Log in to unlock pricing and user insights](/login) ## RESTful JSON API Integrations (3) What do users say about integrations? Integration information sourced from real user reviews. [ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Angular ](https://www.g2.com/products/angular/reviews)[ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Microsoft Azure Services ](https://www.g2.com/products/microsoft-azure-services/reviews)[ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Microsoft Power BI ](https://www.g2.com/products/microsoft-microsoft-power-bi/reviews) Show More ![Sachin B.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Sachin B.") SB Sachin B. Lead Engineer-RPA Enterprise (\> 1000 emp.) 5/2/2026 "Simple, Flexible RESTful JSON APIs That Integrate Smoothly" 5/5 What do you like best about RESTful JSON API? What I like most about RESTful JSON APIs is how simple and flexible they are. JSON is lightweight and easy to work with, and REST APIs tend to integrate smoothly across different platforms and applications. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? One drawback of RESTful JSON APIs is that working with complex or very large response payloads can sometimes be inefficient. On top of that, keeping API versions compatible over time can be challenging. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? RESTful JSON APIs address the challenge of communication between different systems and applications in a simple, standardized way. For me, that means I can integrate services more easily, support better scalability, and accelerate development across platforms. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic NB Nilesh B. Java Developer Enterprise (\> 1000 emp.) 3/19/2026 "Lightweight, Fast, and Easy to Use with Wide Compatibility" 5/5 What do you like best about RESTful JSON API? Lightweight and fast, it’s straightforward to understand and use, and it works well across a wide range of compatible systems. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? Lack of strong typing: JSON doesn’t enforce data types strictly, which can lead to inconsistencies. I also run into overfetching and underfetching issues, and versioning can be a challenge as requirements change. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? System integration enables smooth communication between the Angular frontend and the Spring Boot backend. I also like that it supports platform independence and helps with communication across microservices. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ![Dasaradha V.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Dasaradha V.") DV Dasaradha V. Software Engineering Specialist Mid-Market (51-1000 emp.) 12/22/2023 "Faster data process using RESTful JSON format" 4.5/5 What do you like best about RESTful JSON API? Very simple and easy to use. Faster and Ease of implementation with other applications. Increase the scalability and number of features easily. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? Its difficult of maintain the state, the load will go on client. Its mostly used for public URI's, security is a concern. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? There is huge data of each customer which require based on particular case (E.g address details, financial summary, so on) Review collected by and hosted on G2.com. Show More Our network of Icons are G2 members who are recognized for their outstanding contributions and commitment to helping others through their expertise.G2 IconValidated ReviewerIncentivizedSource: G2 invite ![Nimesh B.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Nimesh B.") NB Nimesh B. Specialist Enterprise (\> 1000 emp.) 9/12/2023 "Its is very useful to integrate different application through API" 5/5 What do you like best about RESTful JSON API? It is very useful in connecting to different cloud applications through API using RESTful JSON Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? Nothing as it is very useful and easy as compare to SOAP API Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? It is helping me to connect my IDAM product with different target application through API to handle Identity management use cases. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic LM LindaRuth M. Data Architect Small-Business (50 or fewer emp.) 1/4/2023 "RestAPI Rocks!" 5/5 What do you like best about RESTful JSON API? Can connect at-ease to restapi interfaces exposed to many sources through Postman, a programming language like Python or Tableau for direct connection. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? A 400 bad request is returned and can mean a number of things such as content-type not correct, not specified,required inputs are not set or if is not understood. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? It is fast and easy to use, returning results in a hierarchical manner. I am using rest to bring in data from multiple sources for joining and doing data analysis. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic ![Neha K.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Neha K.") NK Neha K. Learning Facilitator Small-Business (50 or fewer emp.) 9/13/2022 "Perfect match for interchange of data" 5/5 What do you like best about RESTful JSON API? It is easy to understand and with the presence of get put post delete and other methods. Sending data for querying and receiving data from response becomes so easier. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? There's nothing much to dislike about JSON Restful API. Since the json object t is easily understood by ones who know JavaScript. There's nothing more I can ask for. However, I feel it's not much of a beginner friendly since it's hard or a little overwhelming to understand. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? I wanted to create apps like travel apps and weather apps where Restful JSON API comes into action the most which makes it so easy to get property data from response object. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Jose G.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Jose G.") JG Jose G. Technical Support Associate Small-Business (50 or fewer emp.) 9/15/2022 "Excellent tool for testing and integration purposes" 4.5/5 What do you like best about RESTful JSON API? It's an efficient platform to Test and connect different integrations using RESTful services; it's been instrumental for the organization to offer a different kind of solutions to customers Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? It's not a downside but a quality point to improve; increasing the number of simultaneous calls a service can get in a timeframe; would be highly appreciated. Super recommended Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? Basically, the orchestration gets proofed using the tool, having the chance to test the services in different low environments (Dev, QA, Stress) before releasing them to production. Review collected by and hosted on G2.com. Show More 9/20/2022 Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Alternative Dispute Resolution](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Alternative Dispute Resolution") AA Verified User in Alternative Dispute Resolution Small-Business (50 or fewer emp.) 10/8/2022 "User firendly" 4.5/5 What do you like best about RESTful JSON API? Though not a good example of a rich api , but is very user friendly, anyone with a bit knowledge of json and apis can simply use it in any product without much difficulty. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? There could be more features, like lets say a very deeply nested object is to be implemented, but restful json is not that rich , and is probably not good for that use case. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? Retreiving data from a source in a json format which would have otherwise been difficut or just one more step would have been added i.e. conversion of retreived data into json. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Mohit S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Mohit S.") MS Mohit S. Consultant Enterprise (\> 1000 emp.) 3/31/2022 "Easy and Quick to build APIs" 5/5 What do you like best about RESTful JSON API? RESTful JSON APIs are quick to build and can help to build loosly coupled APIs. These APIs can be created by using multiple tools available like MuleSoft, Delboomi etc. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? RESTful JSON APIs are not much useful if we have to process very large data. JSON can be used for small data but when it comes to bigger chunks we may see issues in processing, APIs getting down etc. Review collected by and hosted on G2.com. Recommendations to others considering RESTful JSON API: RESTful JSON APIs are easy to create, use and manage. You can use it if you want to creat fast and reliable APIs. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? RESTful JSON APIs can be used to connect different systems of an organisation. It has made our system more efficient and fast. We are not seeing any data loss or service downtimes. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Frank M.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Frank M.") FM Frank M. Technical Lead Mid-Market (51-1000 emp.) 8/1/2022 "Lightweight and scalable API integrations at your fingertips!" 5/5 What do you like best about RESTful JSON API? They use existing frameworks and technology such the HTTP standard. JSON as a format is also more lightweight than XML or HTML. This makes the API fast and lightweight. Review collected by and hosted on G2.com. What do you dislike about RESTful JSON API? There aren't any downsides other than perhaps not all frameworks or development environments support this type of API and thus implementation costs can be higher. Review collected by and hosted on G2.com. What problems is RESTful JSON API solving and how is that benefiting you? Integrating varied software applications. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ##### Pricing Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more. 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