DevMock Pro - API Response Hijacker

by josh.jh.yoo@gmail.com · Developer Tools

Manifest V3 in_app

View in Chrome Web Store Data as of 15 Oct 2026

Advanced API mocking, multi-rule management, and status code simulator.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#362K

#274K among extensions

Version

2.0.0

updated 28 Jul 2026

Users

monthly, 3 months

Latest, 15 Oct 2026: 2 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About DevMock Pro - API Response Hijacker

🚀 Mock API Responses & Simulate HTTP Errors Instantly in Your Browser! Are you a Frontend Developer or QA Engineer struggling with incomplete backend APIs or complex edge-case testing? DevMock Pro lets you hijack, redirect, and simulate network responses directly within Google Chrome without modifying server-side code. 🔥 KEY FEATURES: - Instant API Response Hijacking: Intercept fetch/XHR network requests and substitute custom JSON data in real-time. - HTTP Status Code Simulator: Easily test edge cases like 400 Bad Request, 401 Unauthorized, 403 Forbidden, 404 Not Found, and 500 Internal Server Error. - Multi-Rule Management: Save and toggle multiple endpoint rules seamlessly for various projects. - Privacy & Local-First: All interception logic runs safely on your local browser. Zero tracking, zero data collection. 🎯 PERFECT FOR: - Frontend developers building UI before backend API endpoints are ready. - QA engineers testing error states, empty states, and corrupted payloads. Stop waiting for backend deployments! Take control of your network responses with DevMock Pro today.