---
url: 'https://keryxjs.com/reference/config.md'
description: >-
  Auto-generated configuration reference — every config key, its environment
  variable, and default value.
---

# Configuration Reference

Every config key in the backend, auto-generated from source. Each key can be overridden via environment variable — the system checks for `ENV_VAR_NODEENV` first (e.g., `DATABASE_URL_TEST` when `NODE_ENV=test`), then `ENV_VAR`, then falls back to the default.

## {{ section.section }}