# OpenAI API Configuration
OPENAI_API_KEY=your_openai_api_key_here

# LangSmith Configuration (Optional - for tracing)
LANGSMITH_API_KEY=your_langsmith_api_key_here
LANGSMITH_PROJECT=lung-cancer-advisor
LANGCHAIN_PROJECT=lung-cancer-advisor
LANGSMITH_URL=https://api.smith.langchain.com