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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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    Stars
    1,754
    Forks
    439
    Open issues
    48
    Last commit
    Oct 23, 2026 (3 days ago)
    Last release
    Oct 21, 2026 (6 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
    First seen
    Oct 24, 2026
    Last checked
    Oct 24, 2026

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    Cite this page

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