# Anthropic API key — required for all Claude agents
# Get yours at https://console.anthropic.com
ANTHROPIC_API_KEY=sk-ant-api03-...

# NCBI API key — optional, raises PubMed rate limit from 3 to 10 requests/second
# Get yours at https://account.ncbi.nlm.nih.gov/settings/ (free registration)
NCBI_API_KEY=