| `ACCESS_TOKEN_SALT` | `string` | | A random string used as salt for access tokens |
| `API_KEY_COINGECKO_DEMO` | `string` (optional) | | The _CoinGecko_ Demo API key |
| `API_KEY_COINGECKO_DEMO`| `string` (optional) | | The _CoinGecko_ Demo API key |
| `API_KEY_COINGECKO_PRO` | `string` (optional) | | The _CoinGecko_ Pro API key |
| `DATABASE_URL` | `string` | | The database connection URL. If using a connection pooler, use the pooled connection URL here. e.g. `postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@localhost:5432/${POSTGRES_DB}` |
| `DIRECT_URL` | `string` (optional) | | The direct database connection URL used by the _Prisma CLI_ (e.g. for schema migrations) and seeding, bypassing any connection poolers (falls back to `DATABASE_URL`) |
| `ENABLE_FEATURE_RATE_LIMITING` | `boolean` (optional) | `false` | Enables API rate limiting. When running behind a reverse proxy, also set `TRUST_PROXY`, otherwise the rate limits are shared across all clients |
| `HOST` | `string` (optional) | `0.0.0.0` | The host where the Ghostfolio application will run on |
| `JWT_SECRET_KEY` | `string` | | A random string used for _JSON Web Tokens_ (JWT) |
| `LOG_LEVELS` | `string[]` (optional) | | The logging levels for the Ghostfolio application, e.g. `["debug","error","log","warn"]` |