Loadmill Test Composer

Name: Loadmill Test Composer
Rating: 4.56 (9 reviews)
Author: Loadmill

Generate API Tests using AI

As of June 2026, Loadmill Test Composer has 859 users and a 4.56/5 rating from 9 reviews in the Developer Tools category.

Loadmill Developer Tools

Chrome Web Store ↗.crx

Users−14.1%

859

Rating0%

4.56

9 reviews

Reviews0%

Version

0.35

Manifest V3

History

8 snapshots

Tracking since Apr 16, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 16, 2026	1.0K	4.56	9	0.35
Apr 22, 2026	976	4.56	9	0.35
Apr 27, 2026	991	4.56	9	0.35
May 4, 2026	951	4.56	9	0.35
May 15, 2026	950	4.56	9	0.35
May 21, 2026	957	4.56	9	0.35
May 27, 2026	893	4.56	9	0.35
Jun 9, 2026	875	4.56	9	0.35
Now	859	4.56	9	0.35

Permissions & access

Permissions: clipboardWritestoragetabswebRequestdebuggersidePanel
Host access: ws://*/*, wss://*/*, <all_urls>

Screenshots

About

Loadmill Test Composer uses AI to generate automated API tests in real-time, right from your browser.

Spend less time creating boilerplate and repetitive test code and more time adding your own insights to your tests. Play a user flow in your app, and Loadmill Test Composer will generate an end-to-end API test script from the API traffic observed in your browser.

How to use Loadmill Test Composer to generate an end-to-end API test:
➤ Click the Loadmill extension icon in Chrome to open the Loadmill side panel
➤ If you are not logged in to Loadmill, you will be prompted to sign in
➤ Click Start and play the user flow you would like to test
➤ Let Loadmill analyze the API requests observed during the flow
➤ When you are done, click Create Test at the bottom

Note for existing users:
Loadmill Test Composer has moved from the Chrome Developer Tools tab to the Chrome side panel.

★ What's new
• Side panel migration: Loadmill Test Composer now opens in Chrome's side panel instead of a DevTools tab
• Updated side panel flow, including better behavior on tab switch, resume, and panel close
• Improved side panel layout and tooltip behavior when zooming out
• Added support for split incognito mode

★ Supported features
• Auto Analyze Mode: Tests can now analyzed and filtered automatically as you record.
• Added an option to revert the AI analysis
• Support for multiple recording profiles (Using different processing algorithms for each)
• Better support for multi-systems testing. Upload HARs to combine recordings from multiple applications into a single test flow
• Test analysis will now use your account algorithm settings
• Improving the ability to hide and obfuscate sensitive values
• No longer clearing the request list after test creation
• Updated UI visuals and Layout
• Adding automated API descriptions
• Filter irrelevant requests from your session in one click
• View WebSocket binary messages in clear text
• WebSocket! WebSocket events are now included in the generated tests.
• Syntax highlighting for JSON
• Showing the request and response body
• Better control on which requests will be filtered out
• Copy a single request and paste it into your Loadmill tests
• Better support for base64 encoded responses
• Create a new test suite by typing its name in the test suite selector bar