ADK-Python

ADK-Python is Google's open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents. It features an agent loop, handoffs, guardrails, session management, function tools, and tracing, allowing developers to orchestrate multi-agent systems using standard Python. It integrates tightly with Gemini by default but supports other LLMs. A rich tool ecosystem covers OpenAPI, MCP, and custom functions; no-code agent config is also available for quick prototypes. Deployment targets include Cloud Run and Vertex AI Agent Engine. Requires Python proficiency and familiarity with Google Cloud (alternative models can be used). The toolkit is free under an open-source license, but production deployment incurs cloud costs. Ideal for Python teams building modular, controllable AI agents; less suited for no-code or fully managed needs. Get started with `pip install google-adk`.