browser-use is a comprehensive Python framework that enables AI agents to automate web browser interactions. It provides a unified interface for controlling browsers through Playwright/CDP, integrates with multiple LLM providers for decision-making, and includes sophisticated features like structured data extraction, security controls, token usage tracking, and sandboxed execution. The architecture is modular with clear separation between agent reasoning, browser management, tool execution, and extensibility mechanisms. Key innovations include a flexible action registry system with special parameter injection, domain-aware security watchdogs, automatic LLM cost tracking, and MCP integration for extending agent capabilities. The project demonstrates strong engineering practices with extensive testing, CI/CD pipelines, and comprehensive documentation through examples.