Show HN: GDD–36 MCP tools to run N isolated Chromium browsers from Claude/Cursor (github.com)

The newly released GDD tool enables users to run multiple isolated Chromium browsers on their machines, simulating real user interactions across 22 different device types. This innovative tool, developed for use with AI clients like Claude and Cursor, allows developers to automate testing of web applications by opening various browser instances, filling in forms, capturing screenshots, and checking for JavaScript errors—all in parallel. With a simple command interface and powerful capabilities, users can tailor device emulation, geolocation, and network conditions to ensure their applications perform optimally under a diverse set of scenarios. This development is particularly significant for the AI/ML community, as it bridges the gap between automated testing and machine learning applications by allowing AI models to interact directly with web interfaces in a controlled manner. The GDD framework exposes 36 tools that enhance testing functionality, including player management, device settings, and advanced diagnostics. The cross-platform support and self-contained binaries simplify integration into existing CI/CD pipelines, making it a versatile asset for developers focusing on AI-driven web applications. This tool not only streamlines testing processes but also aids in identifying performance issues early in the development cycle, ultimately contributing to more robust and reliable software.