google/adk-python ? reverse-engineered prompt

I want to build a Python framework for creating AI agents. It should be a "code-first" toolkit, where I can define an agent's capabilities, instructions, and tools directly in my Python files.

The framework should let me give agents tools, like the ability to use Google Search to find information. A really important feature is building multi-agent systems. I'd like to be able to create a "coordinator" agent that can manage a team of specialized sub-agents and delegate tasks to them.

Also, please include a simple web-based development UI. This UI should let me test, debug, and chat with the agents I create. The system should be optimized for Gemini models but remain flexible enough to work with others. This project is inspired by Google's Agent Development Kit, so feel free to use that as a reference.