GenAI SDK vs Google ADK: Building Agents

This content compares two approaches to building AI agents: using the GenAI SDK with manual tool definition versus using Google's Agent Development Kit (ADK). The GenAI SDK requires developers to manually define tool functions, their definitions, and manage the agent loop, while the ADK provides a higher-level abstraction that streamlines agent development. The choice between them depends on the level of control and customization needed versus development speed and convenience.

Key Points

• •GenAI SDK requires manual definition of tool functions, tool definitions, and agent loop management
• •ADK (Agent Development Kit) abstracts away boilerplate and provides higher-level agent building primitives
• •Manual approach with GenAI SDK offers more granular control over agent behavior and tool interactions
• •ADK approach prioritizes developer productivity and faster time-to-market for agent applications
• •Tool registry management is explicit in GenAI SDK but handled automatically in ADK
• •Agent loop orchestration differs significantly between the two approaches
• •Choose GenAI SDK for custom, complex agent architectures requiring fine-grained control
• •Choose ADK for rapid prototyping and standard agent patterns with less boilerplate code

Workflow Diagram

Concepts