How to Implement Your First AI Agent Using Gemini 3 Flash and Google ADK

This guide demonstrates how to build your first AI agent using Google's Gemini 3 Flash model and the Google ADK (Agent Development Kit) agents library. It covers the foundational steps for creating, configuring, and deploying an AI agent with modern LLM capabilities. The tutorial provides practical implementation patterns for developers new to agent development using Google's latest tools and frameworks.

Key Points

• •Use Gemini 3 Flash Preview model for fast, efficient AI agent inference
• •Leverage Google ADK agents library as the primary framework for agent development
• •Set up proper authentication and API credentials for Google Cloud integration
• •Define agent capabilities and tools that the agent can access and execute
• •Implement agent reasoning loops to handle multi-step task execution
• •Test agent responses and refine prompts for improved performance
• •Deploy agents using Google Cloud infrastructure for production use
• •Monitor agent behavior and iterate on tool definitions based on real-world usage

Workflow Diagram

Concepts