Rentgen is a sophisticated API testing tool designed to provide a comprehensive view of API behavior, functioning as an X-ray to reveal underlying issues. Built with a focus on ease-of-use, Rentgen adopts a familiar Postman-like interface for seamless testing experience.

Key Features

• Test Generation: Generate hundreds of tests from a single request, streamline testing processes, and enhance efficiency.
• WebSockets (WSS) Support: Engage in live bi-directional testing, enriching the capabilities of API interactions.
• Protobuf Integration: Load .proto schemas, enabling encoding of requests and decoding of responses for more complex data handling.
• Raw Testing Freedom: Send malformed or unstructured payloads without restrictions, allowing for thorough input validation.
• Lightweight Setup: No complex configurations are necessary, ensuring rapid deployment and usability.

Advanced Functionalities

• Data-Driven Testing: Harness the power of smart datasets and automatic field type detection (e.g., string, number, email) to create numerous tests from a single source.
• Security & Headers Audit: Conduct built-in OWASP checks to evaluate headers, methods, CORS, and authorization handling for enhanced security.
• Performance Insights: Monitor metrics such as median response time and ping latency, alongside live load testing featuring p50/p90/p95 metrics.
• Randomized Payload Generation: Utilize functions like randomInt, random32, and randomEmail to ensure unique data in each request.
• Load & Stress Testing: Execute multi-threaded requests with support for up to 100 concurrent connections and automated monitoring for performance anomalies.
• Automatic Field Mapping: Effortlessly detect and edit body and query parameters, increasing the flexibility of test configurations.
• CORS & SSL Controls: Identify public versus private APIs and optionally bypass SSL for staging environments.

Real-World Application

Rentgen has proven its efficacy through real-world testing scenarios, such as a comprehensive analysis of ChatGPT's backend API. In this case, Rentgen successfully generated and executed over 200 API tests, uncovering critical issues related to security and functionality.

For those seeking deeper insights into Rentgen’s capabilities, a detailed case study is available, showcasing its effectiveness in identifying vulnerabilities and performance metrics in real-world APIs.