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Chrome extension to supplement the AGENT (AI Generation and Exploration in Test) system.
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AGENT-X is the label helper component for AGENT, once installed in Chrome it allows for the labeling of HTML elements for training.

A gif of AGENT-X in action


To install AGENT-X follow the steps below:

  • Clone the project
  • Build the project
  • Open Chrome
  • Go to More Tools -> Extensions
  • Flip the Develop toggle
  • Click the button 'Load unpacked'
  • Select the dist/agent-x folder in the project you cloned earlier.
  • The AGENT-X icon should now be present in Chrome, click on it to ensure it installed properly.

User Guide

For a description of the architecture and design of AGENT-X and the associated AGENT project, read the AI Generation and Exploration in Test System (Agent) and Agent-X User's Guide.


The project is divided into two parts, the PopOver (The small window that appears when the Chrome extension icons is clicked) and the "extension" which handles communication between the PopOver and the web page, as well as interactions with the web page. The "extension" is composed of two major compontents, "Background" and "Content". Content communicates with both the PopOver and Background and is the only method for interacting with the page. Background handles background processes, like API calls. The PopOver project is an Angular 7 application located under src/app while the "extension" is a vanilla JavaScript project located in the src/extension folder.

The Chrome Message Passing framework facilitates communication between the components. It is recommended that you read this page if you are unfamilar with Chrome Message Passing.

JQuery is used to interact with the DOM.

Finally, Angular 7 and RXJS Observables are used for the PopOver. All external interacations to the PopOver are wrapped in Observables in services. This allows for a clean sepeartion of concerns and to re-zone the callbacks since the Chrome APIs exit the NgZone. If you are unfamilar with RXJS Observables it is recommended that you read this.


Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build. Since the popover loads each time the Chrome Extension icon is clicked, it is recommended to use --prod to mitigate delayed popup responses. This build command will also transpile and copy both the PopOver and "extension" dependencies.

Once the application has been built you can re-install it in a similar fashion to the Installation steps above:

  • Go to More Tools -> Extensions
  • Click the button 'Load unpacked'
  • Select the dist/agent-x folder

Running unit tests

Run ng test to execute the unit tests via Karma.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI README.


Adamo, David
Alt, Patrick
Briggs, Keith
Celli, Nicolette
Clarke, Peter J.
Daye, Philip
King, Tariq
Phillips, Justin
Santiago, Dionny


Santiago, D. (2018). A model-based AI-driven test generation system (Unpublished master's thesis). Miami, Florida, Florida International University. Retrieved February 5, 2019.

Santiago, D., Clarke, P. J., Alt, P., & King, T. M. (2018). Abstract flow learning for web application test generation. Proceedings of the 9th ACM SIGSOFT International Workshop on Automating TEST Case Design, Selection, and Evaluation - A-TEST 2018, 49-55. doi:10.1145/3278186.3278194

Santiago, D., King, T., & Clarke, P. (2018). AI-driven test generation: Machine learning from human testers. 37th Annual Pacific NW Software Quality Conference.

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