.env.example

# Copy to .env and fill in your values

# Required — get your key at https://console.anthropic.com
ANTHROPIC_API_KEY=sk-ant-...

# Claude model used by both agents (defaults to claude-sonnet-4-6)
ANTHROPIC_MODEL=claude-sonnet-4-6

# Port the backend listens on (7860 = HF Spaces default; 5000 = local dev)
PORT=5000

# Where ChromaDB persists its vector index
CHROMA_PERSIST_DIR=./backend/chroma_db

# Flask environment (set to 'production' in deployed environments)
FLASK_ENV=development

# Comma-separated list of allowed CORS origins (local dev only; prod uses same origin)
CORS_ORIGINS=http://localhost:3000

# Frontend: backend URL for local React dev server (leave unset in Docker — uses same origin)
REACT_APP_API_URL=http://localhost:5000

# Langfuse LLM observability — traces token usage, costs, tool calls, latency
# Get keys at https://cloud.langfuse.com (free tier) or leave unset to disable
LANGFUSE_PUBLIC_KEY=pk-lf-...
LANGFUSE_SECRET_KEY=sk-lf-...
# LANGFUSE_HOST=https://cloud.langfuse.com  # override only for self-hosted deployments