# LLM Provider (choose one)
OPENAI_API_KEY=sk-your-key-here
ANTHROPIC_API_KEY=sk-ant-your-key-here

# Optional: PubMed API key (higher rate limits)
NCBI_API_KEY=your-ncbi-key-here

# Optional: For HuggingFace deployment
HF_TOKEN=hf_your-token-here

# Agent Config
MAX_ITERATIONS=10
LOG_LEVEL=INFO