| #https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4 | |
| title: Credentials environment variables | |
| description: Manage default credentials and override them through environment variables your self-hosted n8n instance. | |
| contentType: reference | |
| tags: | |
| - environment variables | |
| hide: | |
| - toc | |
| - tags | |
| # Credentials environment variables | |
| --8<-- "_snippets/self-hosting/file-based-configuration.md" | |
| Enable credential overwrites using the following environment variables. Refer to [Credential overwrites](/embed/configuration.md#credential-overwrites) for details. | |
| | Variable | Type | Default | Description | | |
| | :------- | :---- | :------- | :---------- | | |
| | `CREDENTIALS_OVERWRITE_DATA`<br>/`_FILE` | * | - | Overwrites for credentials. | | |
| | `CREDENTIALS_OVERWRITE_ENDPOINT` | String | - | The API endpoint to fetch credentials. | | |
| | `CREDENTIALS_DEFAULT_NAME` | String | `My credentials` | The default name for credentials. | | |