# LLM
OPENAI_API_KEY=sk-...
OPENAI_MODEL=gpt-4o

# Postgres
DATABASE_URL=postgresql://erp_user:erp_password@localhost:5432/finance_erp

# LangSmith (tracing & evals)
LANGCHAIN_TRACING_V2=true
LANGCHAIN_API_KEY=lsv2_...
LANGCHAIN_PROJECT=finance-erp-agent
LANGCHAIN_ENDPOINT=https://api.smith.langchain.com

# LangGraph Cloud (deployment)
LANGGRAPH_API_KEY=lgk_...
LANGGRAPH_CLOUD_URL=https://<your-deployment>.us.langgraph.app