CopilotKit <> A2A + A2UI Starter

This is a starter template for building AI agents that use A2UI and CopilotKit. It provides a modern Next.js application with an integrated restaurant finder agent that can find restaurants and book reservations

Prerequisites

• Gemeni API Key (for the ADK/A2A agent)
• Python 3.12+
• uv
• Node.js 20+
• Any of the following package managers:
  • npm (default)
  • pnpm
  • yarn
  • bun

Getting Started

1. Install dependencies using your preferred package manager:

# Using npm (default)
npm install

# Using pnpm
pnpm install

# Using yarn
yarn install

# Using bun
bun install

Note: This will automatically setup the Python environment as well.

If you have manual issues, you can run:

shCopy

npm run install:agent

3. Set up your Gemeni API key:

Create a .env file inside the agent folder with the following content:

GEMENI_API_KEY=sk-...your-openai-key-here...

4. Start the development server:

# Using npm (default)
npm run dev

# Using pnpm
pnpm dev

# Using yarn
yarn dev

# Using bun
bun run dev

This will start both the UI and agent servers concurrently.

Available Scripts

The following scripts can also be run using your preferred package manager:

• dev - Starts both UI and agent servers in development mode
• dev:debug - Starts development servers with debug logging enabled
• dev:ui - Starts only the Next.js UI server
• dev:agent - Starts only the A2A agent server
• build - Builds the Next.js application for production
• start - Starts the production server
• install:agent - Installs Python dependencies for the agent

Documentation

The main UI component is in app/page.tsx, but most of the UI comes from from the agent in the form of A2UI declarative components. To see and edit the components it can generate, look in agent/prompt_builder.py. To generate new components, try the A2UI Composer

📚 Documentation

• A2UI + CopilotKit Documentation - Learn more about how to use A2UI with CopilotKit
• A2UI Documentation - Learn more about A2UI and its capabilities
• CopilotKit Documentation - Explore CopilotKit's capabilities
• Next.js Documentation - Learn about Next.js features and API

Contributing

Feel free to submit issues and enhancement requests! This starter is designed to be easily extensible.

License

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

Troubleshooting

Agent Connection Issues

If you see "I'm having trouble connecting to my tools", make sure:

1. The ADK agent is running on port 10002
2. Your Gemini API key is set correctly
3. Both servers started successfully

Python Dependencies

If you encounter Python import errors:

cd agent
uv sync
uv run .