⚡ Chrome Extension for QA & Developers

Mock, Intercept & Inject API Responses In Real-Time

Test edge cases, simulate server errors, inject payload modifications, and verify frontend component state directly inside your browser without backend changes.

Install Extension Explore Demo
google.com - API Interceptor Active
Mock Rules Configurator Tab: Active
Mocked JSON Payload JSON
{
  "status": "error",
  "code": 500,
  "message": "Simulated backend failure"
}

Built for Fast Web Testing & Development

Everything you need to override network requests, inspect active calls, and simulate failures instantly.

Status Code & Delay Injection

Simulate 4xx/5xx HTTP server errors, timeout behaviors, and latency delays effortlessly.

Live Interception & Inspection

Monitor network calls in active browser tabs, view HTTP headers, payloads, and query parameters.

UI Fitment & Instant Reload

Modify response body payloads on the fly and trigger immediate page reloads to verify UI rendering.

How It Works

3 simple steps to intercept and override your web network traffic.

01

Enable Interceptor

Toggle the interceptor switch on your active Chrome tab.

02

Define Mock Rules

Specify substring URL patterns, set status codes, and add custom JSON responses.

03

Verify & Test UI

Reload the page and see frontend components adapt gracefully to mocked API behavior.