Google
6 min read

Building agents with the ADK and the new Interactions API

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Summary

The article introduces the new Interactions API as a significant advancement in AI development, transitioning from stateless to stateful workflows. It outlines how developers can leverage this API alongside the Agent Development Kit (ADK) to enhance agent capabilities. The API serves as a unified interface for both raw models and managed agents, enabling improved state management, background execution, and native thought handling. Two primary integration patterns are discussed: powering ADK agents with the Interactions API and using the API as a remote agent in an existing Agent2Agent (A2A) ecosystem. Code examples illustrate how to implement these patterns effectively.

Key Learnings

  • 1The Interactions API provides a unified interface for managing AI agents, allowing for improved state management and background execution.
  • 2Developers can enhance their ADK agents by utilizing the Interactions API for complex state management and reasoning chains.
  • 3The API enables seamless integration with existing A2A protocols, allowing developers to incorporate new capabilities without extensive refactoring.
  • 4By treating the API as both an inference engine and a remote agent, developers can expand their agentic systems with minimal friction.

Who Should Read This

Senior AI Developers implementing stateful workflows in AI agents using the ADK and Interactions API

Test Your Knowledge

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What are the trade-offs of using the Interactions API compared to the previous generateContent inference API endpoint?

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How does the Interactions API improve state management for agents built with the ADK?

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In what scenarios would background execution be beneficial for agent workflows?

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What design decisions are necessary when integrating the Interactions API with existing A2A clients?

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How does the InteractionsApiTransport facilitate communication between A2A clients and the Interactions API?

Topics

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