.env.example

# LLM provider — required.
ANTHROPIC_API_KEY=your_key_here

# LangSmith tracing — optional. When LANGSMITH_TRACING=true, every LLM call,
# tool call, and graph node is exported as a hierarchical run.
LANGSMITH_API_KEY=your_key_here
LANGSMITH_PROJECT=store-assistant
LANGSMITH_TRACING=true

# Postgres — required. The compose file maps host POSTGRES_PORT -> container 5432.
POSTGRES_USER=store_assistant
POSTGRES_PASSWORD=change_me
POSTGRES_DB=store_assistant
POSTGRES_HOST=localhost
POSTGRES_PORT=5432

# App settings.
APP_LOG_LEVEL=INFO                          # structlog level: DEBUG | INFO | WARNING | ERROR
APP_PASSPHRASE=change_me_to_a_real_passphrase   # gates retrieval; compared with hmac.compare_digest
APP_LLM_MODEL=claude-sonnet-4-5             # any langchain-anthropic compatible model id
APP_MAX_GRAPH_ITERATIONS=20                 # safety cap on graph loops per turn
APP_OFF_SCOPE_THRESHOLD=3                   # consecutive off-topic msgs before termination

# LangGraph checkpointer connection (psycopg-style URL). Same Postgres instance
# is fine; the agent_state schema is created by `make db-migrate`.
AGENT_CHECKPOINT_DB_URL=postgresql://store_assistant:change_me@localhost:5432/store_assistant