Dev Browser: A browser automation plugin for Claude Code (github.com)

A new browser automation plugin named Dev Browser has been announced for Claude Code, allowing developers to directly control their browser for testing purposes. This plugin introduces several key features such as persistent page interactions across multiple scripts, flexible execution modes (full scripts or step-by-step), and LLM-friendly DOM snapshots, making it particularly suited for AI-driven testing workflows. By utilizing a Chrome extension, Dev Browser integrates seamlessly with existing browsing sessions, maintaining access to logged-in accounts and browser extension capabilities. The significance of Dev Browser lies in its ability to streamline the testing process for developers by combining stateful server operations with agentic script execution. This offers a blend of efficiency and reliability that outperforms existing tools, as evidenced by comparative metrics showing it to be faster and more effective than traditional methods like Playwright. The innovative approach facilitates precise testing scenarios where developers can easily command Claude to interact with their web applications, increasing productivity and reducing the complexity involved in verifying code changes.