Getting Started with Google Agent Development Kit (ADK): Build and Run Your Simple Fact-Checker AI Agent

Have you ever tried building an AI agent, only to get bogged down in massive, complex frameworks just to get a basic output? If you want a clean, code-first way to build and debug agents without the boilerplate, Google’s open-source Agent Development Kit (ADK) is what you need. In this post, you will learn how to set up the Python SDK, code your first Gemini-powered agent that checks facts, and test it locally using ADK’s built-in web playground. Let's get started! Table of contents # Prerequisites Google Agent Development Kit (ADK) Fact checker agent Build the agent Run the agent in the CLI Run the agent with web UI Conclusion Prerequisites # Before you get your hands dirty with the code, let’s get the following prerequisites mentioned: As you will be using Python with Google ADK, you must have Python and uv installed and working. For the demo, we will use uv version 0.11.7 and Python version 3.12 You will need basic knowledge of how Python, pip, and virtualenv work. Knowledge of…