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---
title: Pull Microsoft Defender for Endpoint detections using REST API
description: Learn how call an Microsoft Defender for Endpoint API endpoint to pull detections in JSON format using the SIEM REST API.
description: Learn how to call a Microsoft Defender for Endpoint API endpoint to pull detections in JSON format using the SIEM REST API.
keywords: detections, pull detections, rest api, request, response
search.product: eADQiWindows 10XVcnh
search.appverid: met150
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## Get an access token
Before creating calls to the endpoint, you'll need to get an access token.
You'll use the access token to access the protected resource, which are detections in Microsoft Defender for Endpoint.
You'll use the access token to access the protected resource, which is detections in Microsoft Defender for Endpoint.
To get an access token, you'll need to do a POST request to the token issuing endpoint. Here is a sample request:
@ -115,7 +115,7 @@ Name | Value| Description
:---|:---|:---
sinceTimeUtc | DateTime | Defines the lower time bound alerts are retrieved from, based on field: <br> `LastProcessedTimeUtc` <br> The time range will be: from sinceTimeUtc time to current time. <br><br> **NOTE**: When not specified, all alerts generated in the last two hours are retrieved.
untilTimeUtc | DateTime | Defines the upper time bound alerts are retrieved. <br> The time range will be: from `sinceTimeUtc` time to `untilTimeUtc` time. <br><br> **NOTE**: When not specified, the default value will be the current time.
ago | string | Pulls alerts in the following time range: from `(current_time - ago)` time to `current_time` time. <br><br> Value should be set according to **ISO 8601** duration format <br> E.g. `ago=PT10M` will pull alerts received in the last 10 minutes.
ago | string | Pulls alerts in the following time range: from `(current_time - ago)` time to `current_time` time. <br><br> Value should be set according to **ISO 8601** duration format <br> Example: `ago=PT10M` will pull alerts received in the last 10 minutes.
limit | int | Defines the number of alerts to be retrieved. Most recent alerts will be retrieved based on the number defined.<br><br> **NOTE**: When not specified, all alerts available in the time range will be retrieved.
machinegroups | string | Specifies device groups to pull alerts from. <br><br> **NOTE**: When not specified, alerts from all device groups will be retrieved. <br><br> Example: <br><br> ```https://wdatp-alertexporter-eu.securitycenter.windows.com/api/Alerts/?machinegroups=UKMachines&machinegroups=FranceMachines```
DeviceCreatedMachineTags | string | Single device tag from the registry.