Agent Development Kit (ADK) for TypeScript

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.

• 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.

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

npm install @google/adk

Or with yarn:

yarn add @google/adk

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

• Documentation
• Samples

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],
});

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

Coming soon...

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

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

1. Install dependencies:

   npm install

2. 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.

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.

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

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!