All the Features You Need for Smarter, Faster API Testing
Explore the complete set of features designed to simplify, accelerate, and empower your API development and testing workflow. From quick testing to advanced load simulation, Newtum is your browser-based partner in building reliable APIs—without the complexity.
Core API Testing Capabilities
Build and send any type of request—from simple GET calls to complex SOAP payloads. No extra tools or environments required.
Instantly format and validate API responses in JSON and XML. Syntax highlighting and error hints help you debug faster.
Easily customize methods, headers, query params, and body content using an intuitive interface.
Code Generation for Developers
Generate ready-to-use code in your preferred language, perfect for automation scripts or integrating with your CI/CD pipeline.
- Python
- PHP
- JavaScript (Fetch, Axios)
- C#
- cURL
Built-In Load Testing
Measure how your API performs under stress with simulated concurrent users or custom time durations.
Detailed Metrics Tracked:
- Response times
- Success/failure rates
- Bottlenecks and error logs
Send a prebuilt API request to teammates or clients. Debug together in real-time.
Organize saved requests, create project folders, and revisit test history anytime.
Use the Newtum Chrome Extension to bypass CORS and test APIs running on localhost or internal networks. It follows strict Chrome Web Store security guidelines—no unnecessary permissions or data access.
Store API tests in the cloud, manage multiple projects, and enjoy increased rate limits.
All requests run over HTTPS
Session and project data is isolated
XSS and injection protection implemented
Regular backups and encrypted storage
Multi-language UI support
Time zone-aware scheduling
Mock server integrations
API import from Postman/OpenAPI