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title: List machines API description: Learn how to use the List machines API to retrieve a collection of machines that have communicated with Microsoft Defender for Endpoint cloud. ms.service: defender-endpoint ms.author: painbar author: paulinbar ms.localizationpriority: medium manager: bagol audience: ITPro ms.topic: reference ms.collection:

  • m365-security
  • tier3
  • must-keep ms.subservice: reference ms.custom: api search.appverid: met150 ms.date: 12/11/2025 appliesto:
    • Microsoft Defender for Endpoint Plan 1
    • Microsoft Defender for Endpoint Plan 2
    • Microsoft Defender for Business

List machines API

API description

Retrieves a collection of Machines that have communicated with Microsoft Defender for Endpoint.

Supports OData V4 queries. OData supported operators:

  • $filter on the following properties:
    • computerDnsName
    • id
    • version
    • deviceValue
    • aadDeviceId
    • machineTags
    • lastSeen
    • exposureLevel
    • onboardingStatus
    • lastIpAddress
    • healthStatus
    • osPlatform
    • riskScore
    • rbacGroupId
  • $top with max value of 10,000.
  • $skip

See examples at OData queries with Defender for Endpoint

Limitations

  • You can get devices last seen according to your configured retention period.
  • Maximum page size is 10,000.
  • Rate limitations for this API are 100 calls per minute and 1,500 calls per hour.

Permissions

When obtaining a token using user credentials, the user needs to have at least the following role permission: View Data. For more information, see: Create and manage roles.

Responses include only devices that the user has access to, based on device group settings. For more information, see: Create and manage device groups.

Permission type Permission Permission display name
Application Machine.ReadWrite.All 'Read and write all machine information'
Delegated (work or school account) Machine.ReadWrite 'Read and write machine information'

HTTP request

GET https://api.security.microsoft.com/api/machines

Request headers

Name Type Description
Authorization String Bearer {token}. Required.

Request body

Empty

Response

If successful, and the machines exist, you see 200 OK with list of machine entities in the body. If there are no recent machines, you see 404 Not Found.

Example

Request example

Here's an example of the request.

GET https://api.security.microsoft.com/api/machines

Response example

Here's an example of the response.

HTTP/1.1 200 OK
Content-type: application/json
{
    "@odata.context": "https://api.security.microsoft.com/api/$metadata#Machines",
    "value": [
        {
            "id": "1e5bc9d7e413ddd7902c2932e418702b84d0cc07",
            "computerDnsName": "mymachine1.contoso.com",
            "firstSeen": "2018-08-02T14:55:03.7791856Z",
            "lastSeen": "2018-08-02T14:55:03.7791856Z",
            "osPlatform": "Windows10" "Windows11",
            "version": "1709",
            "osProcessor": "x64",
            "lastIpAddress": "172.17.230.209",
            "lastExternalIpAddress": "167.220.196.71",
            "osBuild": 18209,
            "healthStatus": "Active",
            "rbacGroupId": 140,
            "rbacGroupName": "The-A-Team",
            "riskScore": "Low",
            "exposureLevel": "Medium",
            "isAadJoined": true,
            "aadDeviceId": "80fe8ff8-2624-418e-9591-41f0491218f9",
            "machineTags": [ "test tag 1", "test tag 2" ]
        }
        ...
    ]
}