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windows-itpro-docs/windows/security/threat-protection/microsoft-defender-atp/get-investigation-object.md
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---
title: Get Investigation object API
description: Use this API to create calls related to get Investigation object
keywords: apis, graph api, supported apis, Investigation object
search.product: eADQiWindows 10XVcnh
ms.prod: w10
ms.mktglfcycl: deploy
ms.sitesec: library
ms.pagetype: security
ms.author: macapara
author: mjcaparas
ms.localizationpriority: medium
manager: dansimp
audience: ITPro
ms.collection: M365-security-compliance
ms.topic: article
---
# Get Investigation API
**Applies to:** [Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP)](https://go.microsoft.com/fwlink/p/?linkid=2069559)
- Want to experience Microsoft Defender ATP? [Sign up for a free trial.](https://www.microsoft.com/microsoft-365/windows/microsoft-defender-atp?ocid=docs-wdatp-exposedapis-abovefoldlink)
## API description
Retrieves specific [Investigation](investigation.md) by its ID.
<br> ID can be the investigation ID or the investigation triggering alert ID.
## Limitations
1. Rate limitations for this API are 100 calls per minute and 1500 calls per hour.
## Permissions
One of the following permissions is required to call this API. To learn more, including how to choose permissions, see [Use Microsoft Defender ATP APIs](apis-intro.md)
Permission type | Permission | Permission display name
:---|:---|:---
Application | Alert.Read.All | 'Read all alerts'
Application | Alert.ReadWrite.All | 'Read and write all alerts'
Delegated (work or school account) | Alert.Read | 'Read alerts'
Delegated (work or school account) | Alert.ReadWrite | 'Read and write alerts'
>[!Note]
> When obtaining a token using user credentials:
>- The user needs to have at least the following role permission: 'View Data' (See [Create and manage roles](user-roles.md) for more information)
## HTTP request
```
GET https://api.securitycenter.windows.com/api/investigations/{id}
```
## Request headers
Name | Type | Description
:---|:---|:---
Authorization | String | Bearer {token}. **Required**.
## Request body
Empty
## Response
If successful, this method returns 200, Ok response code with a [Investigations](investigation.md) entity.