Best API Testing Tools for JSON

Parasoft's mission is to provide automated testing solutions and expertise that empower organizations to expedite delivery of safe and reliable software. A powerful unified C and C++ test automation solution for static analysis, unit testing and structural code coverage, Parasoft C/C++test helps satisfy compliance with industry functional safety and security requirements for embedded software systems.

Ensure your applications perform well and maintain high quality by simulating real-world traffic conditions. Monitor code efficiency, quickly identify issues, and gain confidence that your application operates at peak performance prior to launch. Create realistic scenarios, conduct load testing, and develop sophisticated simulations of both external and internal backend systems to enhance your readiness for production. Eliminate the necessity of establishing expensive new environments for every test. The integrated autoscaling feature helps reduce your cloud expenses even more. Avoid cumbersome, custom-built frameworks and tedious manual testing scripts, enabling you to deploy more code in less time. Have confidence that updates can withstand heavy traffic demands. Avert significant outages, fulfill service level agreements, and safeguard user satisfaction. By mimicking external systems and internal infrastructure, you achieve more dependable and cost-effective testing. There is no need to invest in costly, comprehensive environments that require extensive setup time. Effortlessly transition away from outdated systems while ensuring a seamless experience for your customers. With these strategies, you can enhance your app’s resilience and performance under various conditions.

RestSequence is a no-code platform that enables users to construct comprehensive product test workflows by utilizing the APIs of the products being tested. It allows for the efficient creation, management, and execution of test cases and scenarios. Leveraging an application's Swagger API collection, RestSequence facilitates the rapid design and testing of scenarios, ensuring exceptional performance and reliability of applications. Users can onboard generated test scenarios seamlessly, integrating them into their CI/CD pipeline for execution during nightly, weekly, or release builds. Notably, the output file generated from a single use of RestSequence can be repurposed for future testing scenarios without requiring any modifications. Additionally, RestSequence accesses and interprets API details, including method, URL, payload, and request body, from a Swagger specification file. It thoroughly tests each API endpoint to confirm accurate responses, status codes, mandatory fields, and the handling of invalid data, while also monitoring the resources created throughout the testing process. This approach not only streamlines the testing procedure but also enhances the overall efficiency of the development lifecycle.

Go REST is a versatile platform designed for testing and prototyping APIs that supports both GraphQL and RESTful formats, providing users with realistic fake data that mimics real responses, and is accessible around the clock through public endpoints for various entities such as users, posts, comments, and todos. This platform offers the flexibility of multiple API versions along with comprehensive search capabilities across all fields, pagination options (including page and per_page), and includes rate-limiting headers and response format negotiation to optimize performance. It adheres to standard HTTP methods, while any requests that modify data necessitate an access token, which can be provided via an HTTP Bearer token or as a query parameter. Additionally, nested resource capabilities allow for the retrieval of interconnected data, including user-specific posts, comments on posts, and todos created by users, ensuring that developers can easily access relevant information. The platform also features request and response logging, customizable rate limits, and daily data resets to maintain a pristine testing environment, facilitating a smooth development experience. Furthermore, users can take advantage of a dedicated GraphQL endpoint located at /public/v2/graphql, which enables schema-driven queries and mutations for enhanced data manipulation options.