# List Versions (/machines/Machines_list_versions)

List all versions of the configuration for a specific Machine within an app.


`GET /apps/{app_name}/machines/{machine_id}/versions`

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `app_name` | path | `string` | Yes | Fly App Name |
| `machine_id` | path | `string` | Yes | Machine ID |

## Responses

| Status | Description | Schema |
| --- | --- | --- |
| `200` | OK | `MachineVersion[]` |

The full machine-readable OpenAPI spec is available at /openapi.json.