Intercept and mock API responses for testing error scenarios
Users
2
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
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Store rank
#355K
#271K among extensions
Version
2.0.0
updated 10 Sep 2026
Users
monthly, 2 months
Latest, 15 Oct 2026:2 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 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 API Mock Interceptor
🔄 Intercept & Mock API Calls for Easy Testing
API Mock Interceptor is a powerful development tool that allows you to intercept HTTP requests and return custom mock responses. Perfect for testing error scenarios, developing without backend dependencies, and validating application behavior under different conditions.
✨ Key Features: • Visual Interface - Easy-to-use popup for managing mock scenarios • Pattern Matching - Flexible URL patterns with wildcard support • Error Testing - Simulate 404s, 500s, timeouts, and custom errors • Response Delays - Test slow network conditions with configurable delays • Import/Export - Share scenario configurations across teams • JSON Editor - Advanced configuration with built-in validation • Persistent Storage - Settings saved across browser sessions
🎯 Perfect For: • Frontend developers building without backend APIs • QA engineers testing error handling and edge cases • API developers validating error responses • Teams needing to simulate various server conditions
🚀 How It Works:
Enable the interceptor with one click
Add scenarios specifying URL patterns, methods, and responses
Navigate to your web application
Matching API calls return your mock data instead of hitting the server
No server setup required - works instantly on any website!
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Chrome Web Store search rankings
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