Agent Development Kit (ADK) for TypeScript

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<img src="https://raw.githubusercontent.com/google/adk-python/main/assets/agent-development-kit.png" width="256"/>
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An open-source, code-first TypeScript toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
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Important Links:
<a href="https://google.github.io/adk-docs/">Docs</a>,
<a href="https://github.com/google/adk-samples">Samples</a>,
<a href="https://github.com/google/adk-python">Python ADK</a>.
<a href="https://github.com/google/adk-java">Java ADK</a>,
<a href="https://github.com/google/adk-go">Go ADK</a> &
<a href="https://github.com/google/adk-web">Web ADK</a>.
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Agent Development Kit (ADK) is designed for developers seeking fine-grained
control and flexibility when building advanced AI agents that are tightly
integrated with services in Google Cloud. It allows you to define agent
behavior, orchestration, and tool use directly in code, enabling robust
debugging, versioning, and deployment anywhere – from your laptop to the
cloud.

✨ Key Features

Rich Tool Ecosystem: Utilize pre-built tools, custom functions, OpenAPI
specs, or integrate existing tools to give agents diverse capabilities, all
for tight integration with the Google ecosystem.
Code-First Development: Define agent logic, tools, and orchestration
directly in TypeScript for ultimate flexibility, testability, and
versioning.
Modular Multi-Agent Systems: Design scalable applications by composing
multiple specialized agents into flexible hierarchies.

🚀 Installation

If you're using npm, add the following to your dependencies:

npm install @google/adk

Or with yarn:

yarn add @google/adk

📚 Documentation

For building, evaluating, and deploying agents by follow the TypeScript
documentation & samples:

Documentation
Samples

🏁 Feature Highlight

Same Features & Familiar Interface As Other ADKs:

import {LlmAgent, GOOGLE_SEARCH} from '@google/adk';

const rootAgent = new LlmAgent({
  name: 'search_assistant',
  description: 'An assistant that can search the web.',
  model: 'gemini-2.5-flash', // Or your preferred models
  instruction:
    'You are a helpful assistant. Answer user questions using Google Search when needed.',
  tools: [GOOGLE_SEARCH],
});

Development UI

Same as the Python Development UI. A built-in development UI to help you test,
evaluate, debug, and showcase your agent(s).

Evaluate Agents

Coming soon...

🤖 A2A and ADK integration

For remote agent-to-agent communication, ADK integrates with the
A2A protocol. Examples coming soon...

🏗️ Building the Project

To set up the project and build it from source, follow these steps:

Install dependencies:
```
npm install
```
Build the project: This project uses esbuild to compile and bundle
the TypeScript source code. You can build the project using the following
npm scripts:
- npm run build: Compiles the TypeScript code into CommonJS, ESM, and Web
  formats in the dist directory.
- npm run build:bundle: Creates bundled versions of the output for easier
  distribution or use in environments that don't support tree-shaking well.
- npm run build:watch: Watches for changes in the source files and
  automatically rebuilds the project for ESM format only.

🤝 Contributing

We welcome contributions from the community! Whether it's bug reports, feature
requests, documentation improvements, or code contributions, please see our

General contribution guideline and flow.
Then if you want to contribute code, please read
Code Contributing Guidelines to get started.

📄 License

This project is licensed under the Apache 2.0 License - see the
LICENSE file for details.

Preview

This feature is subject to the "Pre-GA Offerings Terms" in the General Service
Terms section of the
Service Specific Terms.
Pre-GA features are available "as is" and might have limited support. For more
information, see the
launch stage descriptions.

Happy Agent Building!

adk-js

README