Google Agent Development Kit (ADK)

Google's open-source, code-first framework for building, evaluating and deploying agents, covering single agents through multi-agent and graph-based workflows. Optimised for Gemini but model- and deployment-agnostic.

Website

https://adk.dev

Who it's for

Teams in or near the Google/Gemini ecosystem who want a multi-language framework with built-in evaluation and one-command deployment to Google Cloud.

Pricing

Free and open source (Apache-2.0). Gemini and Google Cloud usage billed separately.

Category

Agent frameworks & orchestration

Last verified

2026-10-22 (current)

Confidence

high

Key facts

• Python, TypeScript, Go, Java and Kotlin
• Apache-2.0 licence
• Graph-based workflows introduced in ADK 2.0
• Deploys to Agent Runtime, Cloud Run or GKE, or self-hosted
• Agents CLI, evaluation tooling and A2A/MCP support

Sources

Every claim above is drawn from these; we do not publish unsourced specifications.

• https://adk.dev/
• https://github.com/google/adk-docs

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