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Agent Development Kit

Google's open-source framework for building, evaluating and deploying agents and multi-agent systems, in Python, TypeScript, Java and Go.

Visit google.github.io ↗Alternatives
Works with AI agents:llms.txt
Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

AI SDK & Agent Framework · Broad frameworkMulti-agent systems with built-in evaluation and a dev UI, in Python, TypeScript, Java or Go, deployable to Google Cloud.Trade-off: Works with other models but fits Gemini and Google Cloud best; more concepts to learn than a thin SDK.

Who uses it

No maker's live product on record yet, and 16 open-source projects that declare it in their code.

Declared in code 16How evidence is collected →

We haven't found a maker's live product that uses Agent Development Kit yet — only the open-source projects below, which declare it in their code.

Open source: a project that declares Agent Development Kit as a dependency in its public code — verifiable, but not necessarily a live product.

Reliability and open issues

Most wanted on GitHubOpen on 2026-10-04 in google/adk-python, with activity in the last year — issues and feature requests by 👍.

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Questions makers ask about Agent Development Kit

Is Agent Development Kit free?

Yes — it is free, open-source software.

Is Agent Development Kit open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with Agent Development Kit?

It serves an llms.txt docs index.

Who uses Agent Development Kit?

No maker's live product we track yet; 16 open-source projects declare it in their code. source ↗