| API_HOST | localhost | | Host IP or name |
| API_PORT | 3000 | | Port number |
| LOG_LEVEL | info | | The server logs for the level specified and for all the levels higher than it |
| MONGO_MAX_POOL_SIZE | 30 | | Maximum number of mongoDB connections opened in the pool |
| LIST_OF_ISSUER_CLAIMS | | Comma separated string values | List of allowed iss claims while verifying a JWT access token |
| PUBLIC_KEY | | | Public key corresponding to private key to verify JWT |
| MONGO_CONNECTION_STRING | | | MongoDB server connection string |
| PRIVATE_KEY | | | Private key required for signing the JWT access token |