Environment Variables

Reference for app environment configuration

Environment variables are set in dev_resources.py (local) and prd_resources.py (production).

Production Variables

These variables are set in prd_resources.py:

Variable	Source	Description
RUNTIME_ENV	Hardcoded	prd in production
DATA_DIR	Hardcoded	/data (EFS mount point)
OPENAI_API_KEY	Secrets	From prd_api_secrets.yml
EXA_API_KEY	Secrets	From prd_api_secrets.yml (optional)
DB_HOST	AWS	RDS endpoint (auto-populated)
DB_PORT	AWS	RDS port (auto-populated)
DB_USER	Secrets	From prd_db_secrets.yml
DB_PASS	Secrets	From prd_db_secrets.yml
DB_DATABASE	AWS	RDS database name (auto-populated)
WAIT_FOR_DB	Hardcoded	True when database enabled

MIGRATE_DB is not set in production by default. Add it manually if you want migrations to run on startup. See Adding Custom Variables.

Development Variables

These variables are set in dev_resources.py:

Variable	Value	Notes
RUNTIME_ENV	dev
DATA_DIR	/app/.data	Local container path
MIGRATE_DB	True	Auto-migrates on startup
WAIT_FOR_DB	True	Waits for Docker Postgres

Database variables (DB_HOST, DB_PORT, etc.) come from the local Docker container.

Adding Custom Variables

Add variables to the container_env dict in prd_resources.py:

prd_resources.py

container_env = {
    ...
    "MY_CUSTOM_VAR": "value",
    "FROM_LOCAL_ENV": getenv("LOCAL_VAR"),
    "MIGRATE_DB": True,  # Enable auto-migrations
}

After adding variables:

ag infra patch prd:aws:::td && ag infra patch prd:aws:::service

Reading in Code

import os

# With default fallback
my_var = os.getenv("MY_CUSTOM_VAR", "default_value")

# Required (raises if missing)
api_key = os.environ["OPENAI_API_KEY"]