Agent Development Kit (ADK)
Open-source framework for building, evaluating and deploying agents and multi-agent systems, optimized for Gemini but model-agnostic.
Install
Run in your terminal
pip install google-adk
Run in your terminal
npm install @google/adk
Latest version read from pypi package google-adk.
Multi-agent patterns
Handoffs
One agent passes the conversation to another agent, which takes over.
How Agent Development Kit (ADK) does itSubagents / agents as tools
A main agent calls other agents like tools and gets their result back, each with its own context.
How Agent Development Kit (ADK) does itGraph or workflow
You define steps and edges (or a workflow), and the framework runs agents and functions through them.
How Agent Development Kit (ADK) does itGroup chat / crew
Several agents with roles work together on a task, coordinated by a manager or a selection rule.
Not shown in the docs.
Human in the loop
The run pauses for a person to approve, edit or answer before it continues.
How Agent Development Kit (ADK) does itProtocols and hosting
Questions
Does Agent Development Kit (ADK) support MCP?
Yes. Agent Development Kit (ADK)'s documentation shows agents using tools from MCP servers.
Does Agent Development Kit (ADK) support the A2A protocol?
Yes. Agent Development Kit (ADK)'s documentation covers the Agent2Agent (A2A) protocol.
What multi-agent patterns does Agent Development Kit (ADK) support?
The docs show: handoffs, subagents / agents as tools, graph or workflow, human in the loop.
Links
Alternatives in the same languages
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Reviewed Oct 7, 2026.