### Start NextJS Development Server

Source: https://github.com/heygen-official/interactiveavatarnextjsdemo/blob/main/README.md

After installing dependencies and configuring API keys, run this command in your terminal from the project root to start the NextJS development server.

```Shell
npm run dev
```

--------------------------------

### Install Project Dependencies with npm

Source: https://github.com/heygen-official/interactiveavatarnextjsdemo/blob/main/README.md

Navigate to the project directory in your terminal and run this command to install all necessary dependencies listed in the package.json file.

```Shell
npm install
```

--------------------------------

### Configure Optional OpenAI API Key in .env

Source: https://github.com/heygen-official/interactiveavatarnextjsdemo/blob/main/README.md

If you plan to use the optional OpenAI features within the demo, add or update this line in your .env file with your OpenAI API Key.

```dotenv
OPENAI_API_KEY=YOUR_OPENAI_API_KEY_HERE
```

--------------------------------

### Configure HeyGen API Key in .env

Source: https://github.com/heygen-official/interactiveavatarnextjsdemo/blob/main/README.md

Open the .env file in the project root and replace the placeholder with your actual HeyGen Enterprise API Token. This key is used by the server to generate secure access tokens for interactive sessions.

```dotenv
HEYGEN_API_KEY=YOUR_API_KEY_HERE
```

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