Control MSW handlers from a dedicated DevTools panel.
Users
35
+2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#124K
#103K among extensions
Version
0.1.1
updated 22 Jun 2025
Users
monthly, 16 months
Latest, 16 Oct 2026:35 usersMove the mouse over the chart for any month
Ratings count
monthly, 16 months
Latest, 16 Oct 2026:1 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 MSW DevTools Controller
1. Intorduction
This tool is a Chrome DevTools extension that serves as the official Chrome panel implementation of the msw-controller library. It allows you to dynamically control MSW (Mock Service Worker) handlers in real-time without refreshing the browser, significantly improving frontend development and testing productivity.
2. Key Features
Custom Panel: Adds a dedicated 'MSW Controls' tab to the developer tools.
Grouped UI: Displays handlers grouped by API, with collapsible sections.
Individual Handler Control: Toggle individual handlers on/off using switches.
Real-time Code Sync: Automatically reflects changes in the panel UI when handler files are modified and saved (HMR).
3. Installation
Chrome Web Store Installation
Search for "MSW DevTools Controller" in the Chrome Web Store.
Click "Add to Chrome" to install.
Relationship with msw-controller Library
This Chrome extension is the official Chrome panel implementation of the msw-controller library. The msw-controller library provides core functionality for dynamically controlling MSW handlers, while this extension provides a user-friendly UI layer in Chrome DevTools.
4. Installing msw-controller Library
- npm install msw-controller
For library usage and detailed API documentation, please refer to the msw-controller GitHub repository(https://github.com/kkdy21/msw-controller).
5. Usage
Click on the "MSW Controls" tab in the developer tools.
The panel automatically loads the current page's MSW handlers.
Use the toggle switches to enable or disable handlers as needed. Changes are applied immediately.