Google has launched version 1.0.0 of the Agent Development Kit (ADK) for Java, introducing advanced features like Google Maps grounding, "Human-in-the-Loop" confirmation workflows, and automated event compaction. This release also debuts a standardized Agent2Agent protocol and robust session management via Firestore and Vertex AI to help developers build scalable, interoperable AI agents.

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Google has released ADK for Java 1.0.0, the stable version of its Agent Development Kit for building AI agents in Java. Key additions include GoogleMapsTool and UrlContextTool for grounding agents with real-world data, a Plugin system for global cross-agent behaviors like logging and guardrails, event compaction for managing context window size in long-running sessions, Human-in-the-Loop (HITL) workflows via ToolConfirmation for pausing agent execution pending human approval, session and memory management backed by Firestore and Vertex AI, and native support for the Agent2Agent (A2A) protocol enabling interoperability with agents built in other languages and frameworks.

Announcing ADK for Java 1.0.0: Building the Future of AI Agents in Java

Advanced execution control and plugins with App and Plugin

Context engineering with event compaction

Agent collaboration with Agent2Agent protocol