# Agent Development Kit (ADK)

An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

Repository: https://github.com/google/adk-python
Canonical: https://ross.abutalabs.com/products/agent-development-kit-adk
Homepage: https://google.github.io/adk-docs/
Language: Python
License: Apache-2.0
License Family: permissive
Topics: agent, agents, agents-sdk, ai, ai-agents, multi-agent-systems, multi-agents, multi-agents-collaboration, aiagentframework, genai, genai-chatbot, llms, agentic, agentic-ai, llm, multi-agent
Last push: 2026-08-26T23:54:29+00:00
Link (homepage): https://google.github.io/adk-docs/
Link (site_page): https://adk.dev/get-started/about
Link (site_page): https://adk.dev/integrations
Link (site_page): https://adk.dev/get-started/installation
Link (site_page): https://adk.dev/a2a/quickstart-exposing

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 37
- inputs: {"age_days": 519, "days_push": 7, "days_rel": 7, "gap_med": 6.0, "n_releases_24m": 79}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 21299, forks 3897 (observed 2026-08-28T04:11:31.529723+00:00)

## What it is
Agent Development Kit (ADK) is Google's open-source, code-first framework for building, evaluating, and deploying AI agents, available in Python, TypeScript, Go, Java, and Kotlin. It provides a graph-based workflow runtime, tool integration, session/memory management, and A2A protocol support for multi-agent systems, optimized for Gemini but model- and deployment-agnostic.

## Use cases
- build a conversational AI agent with tools like web search
- orchestrate multi-agent workflows with sequential and parallel steps
- expose my agent to other agents via the A2A protocol
- add human-in-the-loop approval steps to an agentic pipeline
- evaluate and debug LLM agents before deploying to production
- build a customer support chatbot backed by an LLM
- deploy agents at enterprise scale on Google Cloud

## When to choose
- you want a code-first, production-oriented agent framework with strong tooling
- you need multi-agent orchestration with deterministic workflow control
- you're building primarily with Gemini but want model flexibility
- you need A2A interoperability between agents across services
- you want official Google support and multi-language SDKs

## When to avoid
- you want a minimal single-file agent script with zero framework overhead
- you're locked into a non-Google ecosystem with its own agent SDK
- you need a no-code/low-code agent builder rather than writing code
- your project depends on ADK 1.x APIs incompatible with 2.0 breaking changes

## Facets
- artifact type: framework
- maturity: active
- function: agent-framework, llm-inference, workflow-automation, chatbot, rag, mcp, sdk, cli, developer-tools
- domain: large-language-models, artificial-intelligence, developer-tools
- platform: python, go, jvm, cross-platform, cli, cloud
- tags: multi-agent-systems, a2a-protocol, gemini, model-agnostic, code-first, google, agent-evaluation, graph-workflows, human-in-the-loop, ai-agents, automation, nodejs, docker

## Member repositories
- google/adk-python (main) score 82
- google/adk-samples (examples) score 64
- google/adk-go (sdk) score 85
- google/adk-java (sdk) score 86
- google/adk-docs (docs) score 64
- google/adk-js (sdk) score 84
- google/adk-web (frontend) score 85

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:31.529723+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:58:26.249751+00:00, confidence not recorded.
  - readme: https://github.com/google/adk-python (fetched 2026-08-28T04:11:31.529723+00:00, sha 3af553cebe93)
  - homepage: https://google.github.io/adk-docs/ (fetched 2026-08-29T07:57:32.412369+00:00, sha 20a5c6ad892a)
  - site_page: https://adk.dev/get-started/about (fetched 2026-08-29T07:57:32.421910+00:00, sha 259f8d80a58d)
  - site_page: https://adk.dev/get-started/installation (fetched 2026-08-29T07:57:32.426980+00:00, sha 4ef8e1d79415)
  - site_page: https://adk.dev/a2a/quickstart-exposing (fetched 2026-08-29T07:57:32.429757+00:00, sha 170fae3339b9)
  - site_page: https://adk.dev/a2a/quickstart-exposing-go (fetched 2026-08-29T07:57:32.432304+00:00, sha 2d83ddb14eae)
  - site_page: https://adk.dev/a2a/quickstart-exposing-java (fetched 2026-08-29T07:57:32.434330+00:00, sha 952befdc4622)
  - site_page: https://adk.dev/a2a/quickstart-consuming (fetched 2026-08-29T07:57:32.436468+00:00, sha 5b4a08500ede)
  - site_page: https://adk.dev/a2a/quickstart-consuming-go (fetched 2026-08-29T07:57:32.438690+00:00, sha bb234e3ad79e)
  - site_page: https://adk.dev/integrations (fetched 2026-08-29T07:57:32.424268+00:00, sha cbdc3c12de40)
- Data as of 2026-08-30T08:39:29.467469+00:00.