API Workbench

Professional API Testing & Automation Studio

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AUTH
PAYLOAD (JSON)
HEADERS
RESPONSE OBJECT TREE
Awaiting execution data...
AUTOMATION SCRIPT

                        
                    
REGRESSION TEST MATRIX
JSON Path Type Observed Value Verification
Execute request to populate regression data

Free API Testing Tool Online – Enterprise REST API Testing Platform

Enterprise API Workbench is a professional browser-based API testing platform designed for QA engineers, SDETs and backend developers who need production-grade API validation without installing heavyweight tools. Test REST APIs online, validate JSON schema contracts, generate automation scripts and monitor backend response health directly inside your browser with real-time structured response visualization.

Online REST API Testing Without Installing Software

This free API testing tool allows engineering teams to send HTTP GET, POST, PUT and DELETE requests directly from the browser interface. Inspect nested JSON responses in a structured tree viewer, validate response types, assert expected status codes and automatically generate regression test cases for continuous integration environments.

Contract Validation

Validate backend API contract stability by automatically mapping response JSON paths and identifying structural drift between versions. Prevent production failures caused by undocumented API response changes.

Schema Testing

Run real-time response type validation against expected primitive structures such as string, integer, boolean and object nodes. Ideal for backend regression testing pipelines.

Swagger Import

Import OpenAPI or Swagger documentation to automatically populate API endpoints and payload structures for test execution. Accelerate onboarding for large microservice ecosystems.

GraphQL API Testing

Send GraphQL queries and mutations directly from the request editor. Validate resolver responses and monitor latency metrics for production services.

CI Automation Script Generator

Generate production-ready API automation test scripts for Python Pytest, Java RestAssured and JavaScript Playwright environments. Integrate backend regression tests into Jenkins, GitHub Actions or GitLab CI pipelines.

Visual Response Diff Checker

Compare historical API responses to detect payload inconsistencies between deployments. Ideal for microservice contract testing.

Supported API Automation Frameworks

Framework Language Use Case
Playwright JavaScript API + UI Hybrid Automation
RestAssured Java Backend Contract Testing
Pytest Requests Python Microservice Regression

API Health Monitoring For DevOps Teams

Monitor backend API uptime and latency metrics in real time. Detect performance degradation across staging and production environments by continuously validating response time and status behaviour.

Frequently Asked Questions

Is this API testing tool completely free?

Yes. This browser-based API testing platform is completely free for manual testing and automation script generation.

Can this tool replace desktop API testing clients?

This platform provides request execution, response inspection, schema validation and automation export suitable for CI/CD pipelines.

Does this support contract regression testing?

Yes. Nested JSON path detection allows response-level verification across deployments.