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# CopilotKit <> MCP Apps Starter
This is a starter template for integrating [MCP Apps](https://mcpui.dev) with [CopilotKit](https://copilotkit.ai). It uses the [Three.js example](https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/threejs-server) from the official Model Context Protocol organization on GitHub.
https://github.com/user-attachments/assets/8908af31-2b64-4426-9c83-c51ab86256de
## Project Structure
```
.
├── app/ # Next.js App Router pages and API routes
│ ├── page.tsx # Main page
│ └── api/copilotkit/ # CopilotKit API route
├── threejs-server/ # MCP App Server (Three.js)
│ ├── server.ts # Server entry point
│ ├── src/ # Three.js app source
│ └── package.json
├── scripts/ # MCP server run scripts
├── next.config.ts
├── tsconfig.json
└── package.json
```
## Prerequisites
- Node.js 20+
- Any of the following package managers:
- npm (default)
- [pnpm](https://pnpm.io/installation)
- [yarn](https://classic.yarnpkg.com/lang/en/docs/install/)
- [bun](https://bun.sh/)
- OpenAI API Key
## Getting Started
1. Install dependencies using your preferred package manager:
```bash
# Using npm (default)
npm install
# Using pnpm
pnpm install
# Using yarn
yarn install
# Using bun
bun install
```
> The `postinstall` script automatically installs the MCP server dependencies in `threejs-server/`.
2. Set up your environment variables:
```bash
echo 'OPENAI_API_KEY=your-openai-api-key-here' > .env
```
3. Start the development servers:
```bash
# Using npm (default)
npm run dev
# Using pnpm
pnpm dev
# Using yarn
yarn dev
# Using bun
bun run dev
```
This starts both the Next.js app and the MCP server concurrently.
## Available Scripts
The following scripts can also be run using your preferred package manager:
- `dev` - Starts both the UI and MCP server in development mode
- `dev:ui` - Starts only the Next.js UI server
- `dev:mcp` - Starts only the MCP App Server
- `build` - Builds the Next.js application for production
- `start` - Starts the production server
## Customization
The main UI component is in `app/page.tsx`. You can:
- Modify the theme colors and styling
- Add new frontend actions
- Customize the CopilotKit sidebar appearance
The MCP App Server code is in `threejs-server/`.
## Documentation
- [CopilotKit Documentation](https://docs.copilotkit.ai) - Explore CopilotKit's capabilities
- [Next.js Documentation](https://nextjs.org/docs) - Learn about Next.js features and API
- [MCP Apps Documentation](https://mcpui.dev/guide/introduction) - Learn more about MCP Apps and how to use it
## 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.