Web interface for the Gemini 2.5 Computer Use model

Browsafex

A web application wrapper for the Gemini 2.5 Computer Use model. It connects to a web browser and implements all the functionality required by the model to interact with websites.

Check out this demo video to see Browsafex in action:

Prerequisites

• Node.js (version 18 or higher)
• Yarn package manager
• Claude API key
• Either a local Google Chrome browser OR a Kernel API key

Configuration

To use the web app, you need to provide minimal configuration by adding your Claude API key and browser configuration to the .env file.

Required Configuration

GEMINI_API_KEY=your-api-key

Browser Configuration (Choose One Option)

Option 1: Local Chrome Browser (Default)

The app can connect to an existing Chrome browser instance with remote debugging enabled using the --remote-debugging-port flag. You can start one on your local machine with the following commands, depending on your operating system:

macOS:

/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --remote-debugging-port=9222

Windows:

C:\Program Files\Google\Chrome\Application\chrome.exe --remote-debugging-port=9222

Linux:

google-chrome --remote-debugging-port=9222

Then set the BROWSER_URL environment variable to the URL of the Chrome instance:

BROWSER_URL=http://localhost:9222

Option 2: Kernel Browser Service (Recommended for Production)

Kernel provides browsers-as-a-service in the cloud, eliminating the need to manage local browser instances. They offer a nice free tier that you can use to experiment with the app.

1. Sign up for a Kernel account at https://www.onkernel.com/
2. Get your API key from the Kernel dashboard
3. Add it to your