Google ADK 2.0 Ships Graph-Based Execution Engine with Coordinator Agents and Task API

Google Cloud Blog·high signal

Agent Development Kit 2.0 introduces a unified graph-based engine for building deterministic agent workflows with routing, fan-out/fan-in, loops, retry, state management, and human-in-the-loop support. New collaborative agent architecture supports coordinator agents with multiple subagents in three operating modes: chat (full user interaction), task (clarification-only with auto-return), and single-turn (parallel execution). Available in Python, TypeScript, Go, Java, and Kotlin via the new Agents CLI.