API Mocker V1

Intercept, modify and mock HTTP requests

API Mocker - The Ultimate API Mocking & Testing Tool Short Description Intercept, modify, and mock HTTP requests directly in your browser. No backend required. Long Description API Mocker is a powerful developer tool that gives you complete control over your browser's network traffic. Whether you're a frontend developer waiting for backend APIs, a QA engineer testing edge cases, or a designer tweaking UI states, API Mocker streamlines your workflow by allowing you to simulate any API response instantly. Why You Should Install It: 🚀 Zero Backend Dependency: Start building your frontend immediately. Define API rules and get JSON responses without writing a single line of backend code. ⚡ Accelerate Development: Stop waiting for API deployment. Mock missing endpoints and proceed with your UI implementation. 🧪 Test Edge Cases Easily: How does your app handle a 500 error? Or a 404? Or a slow network? Simulate these scenarios with a single click to ensure your app is robust. Key Features: Intercept & Modify: Automatically capture XHR and Fetch requests matching your custom URL patterns. Dynamic Rule Management: Create, edit, and toggle mocking rules on the fly with a clean, intuitive interface. Flexible Matching: Support for exact URL matching and wildcard patterns (e.g., /api/users/*). Full Response Control: Customize HTTP status codes (200, 400, 500, etc.), response headers, and response bodies (JSON, Text, XML). Network Simulation: Add artificial delays to simulate slow network connections and loading states. Visual Notifications: Get real-time feedback when a request is intercepted and mocked. How It Works: Open the API Mocker interface. Add a new rule (e.g., Match https://api.example.com/users). Define the response you want (Status 200, Body: [{ "id": 1, "name": "Test User" }]). Browse your site. When the app requests that URL, API Mocker intercepts it and serves your defined response instantly. Perfect for: Frontend Developers, QA Testers, and Full Stack Engineers looking for a lightweight, browser-based mocking solution. Privacy-First: API Mocker runs entirely within your browser. No data is sent to external servers.