Google ADK + A2A: open-source framework and protocol for agents that talk to each other
In one sentence Google launches ADK (Agent Development Kit), an open-source SDK for building Gemini agents, and the A2A protocol for standardized communication between agents from different vendors.
Building a multi-agent system today is like building a company where every employee speaks a different language: each framework (LangChain, AutoGen, CrewAI) has its own conventions, and getting agents from different systems to communicate requires lots of custom code.
Google responds with two complementary tools: ADK (Agent Development Kit) — an open-source SDK for building Gemini-based agents with tool use, memory, and orchestration — and the A2A (Agent-to-Agent) protocol, an open standard for enabling agents from different vendors and frameworks to communicate via HTTP/JSON-RPC.
The goal is ambitious: an ecosystem where a Google agent can delegate sub-tasks to an Anthropic agent, which in turn collaborates with an agent built with LangGraph, without anyone having to write custom integrations.
Companies
Tools
Agent Development Kit, A2A Protocol, Gemini
Tags
Sources