ADK for Java

Code-first Java toolkit for building and testing AI agents, with multi-agent hierarchies, a dev UI and Maven packages.

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IndexedApache-2.0★ 1,754

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About

ADK for Java defines agents, tools and orchestration in Java code, so they can be versioned and tested like other application code. Specialized agents can be composed into hierarchies, and a separate dev UI package supports testing and debugging. The README says remote agent-to-agent calls use the A2A protocol. It is published to Maven Central under Apache 2.0, and the README lists agent evaluation as coming soon.

Use cases: agent-orchestration

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Fact sheet

Languages: JavaREADME
Packages: com.google.adk:google-adk (maven), com.google.adk:google-adk-dev (maven)README
Multi-agent: YesREADME
Orchestration: otherREADME
MCP support: Built inadk.dev
A2A support: Built inREADME
Deploys to: cloud-run, gkeadk.dev
Model providers: googleREADME
Maturity: BetaREADME

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

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Signals

Stars: 1,754
Forks: 439
Open issues: 48
Last commit: Oct 23, 2026 (7 days ago)
Last release: Oct 21, 2026 (9 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages: maven com.google.adk:google-adkmaven com.google.adk:google-adk-dev
License: Apache-2.0
Repository: github.com/google/adk-java
Website: google.github.io/adk-docs/
Docs: google.github.io/adk-docs/
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: README Docs github-graphql

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Cite this page

ADK for Java. Agent Mart. https://agentmart.dev/harnesses/adk-for-java (last updated 2026-10-24)