# LangChain RAG API Environment Variables
# Copy this file to .env and fill in your values

# Required: OpenAI API Key
OPENAI_API_KEY=

# Required for session persistence: PostgreSQL Database URL
# On Render, this is automatically set when you add a PostgreSQL database
DATABASE_URL=

# LangSmith Tracing (enable for demos after setting LANGSMITH_API_KEY)
# Get your API key at https://smith.langchain.com
LANGSMITH_TRACING=false
LANGSMITH_ENDPOINT=https://api.smith.langchain.com
LANGSMITH_API_KEY=
LANGSMITH_PROJECT=demo

# Optional: comma-separated browser origins allowed to call the API.
# Wildcard origins are ignored; use explicit http:// or https:// origins.
ALLOWED_ORIGINS=http://localhost:3000,http://127.0.0.1:3000

# Optional: enable admin/debug endpoints in trusted environments only.
ENABLE_DEBUG_ENDPOINTS=false
DEBUG_ERRORS=false
OPENAI_MODEL=gpt-4o-mini