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.

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agents Repo for the Complete Agentic AI Engineering CourseAI SDK & Agent FrameworkIn its code · source ↗

ai-agents-frameworks The ultimate playground to learn, experiment with, and compare modern open-source AI age…AI SDK & Agent FrameworkIn its code · source ↗

awesome-llm-apps 100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.AI SDK & Agent FrameworkIn its code · source ↗

CopilotKit The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more.…AI SDK & Agent FrameworkIn its code · source ↗

openinference OpenTelemetry Instrumentation for AI ObservabilityAI SDK & Agent FrameworkIn its code · source ↗

semantica Graph-Native Infrastructure for Context and Accountable AI SystemsAI SDK & Agent FrameworkIn its code · source ↗

ag-ui AG-UI: the Agent-User Interaction Protocol. Bring Agents into Frontend Applications.AI SDK & Agent FrameworkIn its code · source ↗

DeepEval Open-source Python framework for unit-testing LLM apps with pytest-style test cases and…AI SDK & Agent FrameworkIn its code · source ↗

PraisonAI PraisonAI 🦞 — Hire a 24/7 AI Workforce. Stop writing boilerplate and start shipping aut…AI SDK & Agent FrameworkIn its code · source ↗

weave Weave is a toolkit for developing AI-powered applications, built by Weights & Biases.AI SDK & Agent FrameworkIn its code · source ↗

adk-recipes A collection of sample agents built with Agent Development Kit (ADK)AI SDK & Agent FrameworkIn its code · source ↗

kagent Cloud Native Agentic AI | Discord: https://bit.ly/kagentdiscordAI SDK & Agent FrameworkIn its code · source ↗

Agent365-Samples AI SDK & Agent FrameworkIn its code · source ↗

akto Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCP…AI SDK & Agent FrameworkIn its code · source ↗

sdk-typescript Temporal TypeScript SDKAI SDK & Agent FrameworkIn its code · source ↗

agent-learning-kit General Purpose Evaluation and Simulation Environment for all your AI related WorkflowsAI SDK & Agent FrameworkIn its code · source ↗

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 GitHub

Update database schema automatically👍 17 · opened Oct 2025 · active Jul 2026
VertexAiSearchTool User Credentials👍 12 · opened May 2025 · active Jan 2026
RFC: Alembic Adoption for Database Migrations in ADK-Python👍 10 · opened Feb 2026 · active Jun 2026

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

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LangGraphStateful agents built as an explicit graph of steps, with checkpoints, retries, streaming and pauses for human approval, in Python or JavaScript.Open sourceFree tier1 makers · AI SDK & agent framework

CrewAIPython projects that split work across several role-based agents, like researcher, writer and reviewer.Open sourceFree tier3 makers · AI SDK & agent framework

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 ↗