> For AI agents: [llms.txt](https://docs.trustedauth.com/llms.txt) provides a Markdown index of this documentation.

# List machine authenticators for a user

`GET /api/web/v1/users/{userid}/machines`

List all machine authenticators for the specified user. Caller requires the USERMACHINES:VIEW permission.

## Parameters

| Name | In | Required | Type | Description |
| --- | --- | --- | --- | --- |
| userid | path | Yes | string | The UUID of the user for which machine authenticators are to be fetched. |

## Responses

### 200

Successful

#### application/json

Schema

```json
{
  "type": "array",
  "items": {
    "required": [
      "id",
      "label",
      "registrationTime"
    ],
    "type": "object",
    "properties": {
      "expiryTime": {
        "type": "string",
        "description": "When this machine secret expires in UTC time",
        "format": "date-time",
        "example": "2019-02-19T13:15:27Z"
      },
      "id": {
        "type": "string",
        "description": "Identifies the device/machine"
      },
      "label": {
        "type": "string",
        "description": "Identifies the device/machine from the end-user point of view"
      },
      "lastUsedTime": {
        "type": "string",
        "description": "When this machine secret was last used",
        "format": "date-time",
        "example": "2019-02-19T13:15:27Z"
      },
      "registrationTime": {
        "type": "string",
        "description": "When this machine secret was created in UTC time",
        "format": "date-time",
        "example": "2019-02-19T13:15:27Z"
      }
    },
    "description": "UserMachineAuthenticator",
    "title": "UserMachineAuthenticator"
  }
}
```

### 400

Bad Request

#### application/json

Schema

```json
{
  "type": "object",
  "properties": {
    "errorCode": {
      "type": "string",
      "description": "Error Codes specific to cause of failure.",
      "example": "invalid_user_response"
    },
    "errorMessage": {
      "type": "string",
      "description": "Additional Error Message describing the error.",
      "example": "Application id cannot be null"
    },
    "parameters": {
      "type": "array",
      "description": "Optional additional error information.",
      "items": {
        "type": "object",
        "description": "Optional additional error information."
      }
    }
  },
  "description": "Object containing information about errors reported by services.",
  "title": "ErrorInfo"
}
```

### 401

Access denied

#### application/json

Schema

```json
{
  "type": "object",
  "properties": {
    "errorCode": {
      "type": "string",
      "description": "Error Codes specific to cause of failure.",
      "example": "invalid_user_response"
    },
    "errorMessage": {
      "type": "string",
      "description": "Additional Error Message describing the error.",
      "example": "Application id cannot be null"
    },
    "parameters": {
      "type": "array",
      "description": "Optional additional error information.",
      "items": {
        "type": "object",
        "description": "Optional additional error information."
      }
    }
  },
  "description": "Object containing information about errors reported by services.",
  "title": "ErrorInfo"
}
```

### 403

Forbidden

#### application/json

Schema

```json
{
  "type": "object",
  "properties": {
    "errorCode": {
      "type": "string",
      "description": "Error Codes specific to cause of failure.",
      "example": "invalid_user_response"
    },
    "errorMessage": {
      "type": "string",
      "description": "Additional Error Message describing the error.",
      "example": "Application id cannot be null"
    },
    "parameters": {
      "type": "array",
      "description": "Optional additional error information.",
      "items": {
        "type": "object",
        "description": "Optional additional error information."
      }
    }
  },
  "description": "Object containing information about errors reported by services.",
  "title": "ErrorInfo"
}
```

### 404

Not Found

#### application/json

Schema

```json
{
  "type": "object",
  "properties": {
    "errorCode": {
      "type": "string",
      "description": "Error Codes specific to cause of failure.",
      "example": "invalid_user_response"
    },
    "errorMessage": {
      "type": "string",
      "description": "Additional Error Message describing the error.",
      "example": "Application id cannot be null"
    },
    "parameters": {
      "type": "array",
      "description": "Optional additional error information.",
      "items": {
        "type": "object",
        "description": "Optional additional error information."
      }
    }
  },
  "description": "Object containing information about errors reported by services.",
  "title": "ErrorInfo"
}
```

### 409

Conflict

#### application/json

Schema

```json
{
  "type": "object",
  "properties": {
    "errorCode": {
      "type": "string",
      "description": "Error Codes specific to cause of failure.",
      "example": "invalid_user_response"
    },
    "errorMessage": {
      "type": "string",
      "description": "Additional Error Message describing the error.",
      "example": "Application id cannot be null"
    },
    "parameters": {
      "type": "array",
      "description": "Optional additional error information.",
      "items": {
        "type": "object",
        "description": "Optional additional error information."
      }
    }
  },
  "description": "Object containing information about errors reported by services.",
  "title": "ErrorInfo"
}
```

## Security

Requirements

```json
[
  {
    "AdminAPIAuthentication": [
      "USERMACHINES:VIEW"
    ]
  }
]
```