Grant an appRoleAssignment to a service principal

Namespace: microsoft.graph

Assign an app role to a client service principal.

App roles that are assigned to service principals are also known as application permissions. Application permissions can be granted directly with app role assignments, or through a consent experience.

To grant an app role assignment to a client service principal, you need three identifiers:

• principalId: The id of the client service principal to which you are assigning the app role.
• resourceId: The id of the resource servicePrincipal (the API) which has defined the app role (the application permission).
• appRoleId: The id of the appRole (defined on the resource service principal) to assign to the client service principal.

This API is available in the following national cloud deployments.

Global service	US Government L4	US Government L5 (DOD)	China operated by 21Vianet
✅	✅	✅	✅

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

Permission type	Least privileged permissions	Higher privileged permissions
Delegated (work or school account)	AppRoleAssignment.ReadWrite.All and Application.Read.All	AppRoleAssignment.ReadWrite.All and Directory.Read.All
Delegated (personal Microsoft account)	Not supported.	Not supported.
Application	AppRoleAssignment.ReadWrite.All and Application.Read.All	AppRoleAssignment.ReadWrite.All and Directory.Read.All

Important

In delegated scenarios with work or school accounts, the signed-in user must be assigned a supported Microsoft Entra role or a custom role with a supported role permission. The following least privileged roles are supported for this operation:

• Directory Synchronization Accounts - for Microsoft Entra Connect and Microsoft Entra Cloud Sync services
• Directory Writer
• Hybrid Identity Administrator
• Identity Governance Administrator
• Privileged Role Administrator
• User Administrator
• Application Administrator
• Cloud Application Administrator

HTTP request

You can address the service principal using either its id or appId. id and appId are referred to as the Object ID and Application (Client) ID, respectively, in app registrations in the Microsoft Entra admin center.

POST /servicePrincipals/{id}/appRoleAssignments
POST /servicePrincipals(appId='{appId}')/appRoleAssignments

Note

As a best practice, we recommend creating app role assignments through the appRoleAssignedTo relationship of the resource service principal, instead of the appRoleAssignments relationship of the assigned user, group, or service principal.

Request headers

Name	Description
Authorization	Bearer {token}. Required. Learn more about authentication and authorization.
Content-type	application/json. Required.

Request body

In the request body, supply a JSON representation of an appRoleAssignment object.

Response

If successful, this method returns a 201 Created response code and an appRoleAssignment object in the response body.

Examples

Request

The following example shows a request.

HTTP

POST https://graph.microsoft.com/v1.0/servicePrincipals/9028d19c-26a9-4809-8e3f-20ff73e2d75e/appRoleAssignments
Content-Type: application/json

{
  "principalId": "9028d19c-26a9-4809-8e3f-20ff73e2d75e",
  "resourceId": "8fce32da-1246-437b-99cd-76d1d4677bd5",
  "appRoleId": "498476ce-e0fe-48b0-b801-37ba7e2685c6"
}

C#

// Code snippets are only available for the latest version. Current version is 5.x

// Dependencies
using Microsoft.Graph.Models;

var requestBody = new AppRoleAssignment
{
	PrincipalId = Guid.Parse("9028d19c-26a9-4809-8e3f-20ff73e2d75e"),
	ResourceId = Guid.Parse("8fce32da-1246-437b-99cd-76d1d4677bd5"),
	AppRoleId = Guid.Parse("498476ce-e0fe-48b0-b801-37ba7e2685c6"),
};

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.ServicePrincipals["{servicePrincipal-id}"].AppRoleAssignments.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

CLI

mgc service-principals app-role-assignments create --service-principal-id {servicePrincipal-id} --body '{\
  "principalId": "9028d19c-26a9-4809-8e3f-20ff73e2d75e",\
  "resourceId": "8fce32da-1246-437b-99cd-76d1d4677bd5",\
  "appRoleId": "498476ce-e0fe-48b0-b801-37ba7e2685c6"\
}\
'

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

// Code snippets are only available for the latest major version. Current major version is $v1.*

// Dependencies
import (
	  "context"
	  "github.com/google/uuid"
	  msgraphsdk "github.com/microsoftgraph/msgraph-sdk-go"
	  graphmodels "github.com/microsoftgraph/msgraph-sdk-go/models"
	  //other-imports
)

requestBody := graphmodels.NewAppRoleAssignment()
principalId := uuid.MustParse("9028d19c-26a9-4809-8e3f-20ff73e2d75e")
requestBody.SetPrincipalId(&principalId) 
resourceId := uuid.MustParse("8fce32da-1246-437b-99cd-76d1d4677bd5")
requestBody.SetResourceId(&resourceId) 
appRoleId := uuid.MustParse("498476ce-e0fe-48b0-b801-37ba7e2685c6")
requestBody.SetAppRoleId(&appRoleId) 

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
appRoleAssignments, err := graphClient.ServicePrincipals().ByServicePrincipalId("servicePrincipal-id").AppRoleAssignments().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

// Code snippets are only available for the latest version. Current version is 6.x

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

AppRoleAssignment appRoleAssignment = new AppRoleAssignment();
appRoleAssignment.setPrincipalId(UUID.fromString("9028d19c-26a9-4809-8e3f-20ff73e2d75e"));
appRoleAssignment.setResourceId(UUID.fromString("8fce32da-1246-437b-99cd-76d1d4677bd5"));
appRoleAssignment.setAppRoleId(UUID.fromString("498476ce-e0fe-48b0-b801-37ba7e2685c6"));
AppRoleAssignment result = graphClient.servicePrincipals().byServicePrincipalId("{servicePrincipal-id}").appRoleAssignments().post(appRoleAssignment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const appRoleAssignment = {
  principalId: '9028d19c-26a9-4809-8e3f-20ff73e2d75e',
  resourceId: '8fce32da-1246-437b-99cd-76d1d4677bd5',
  appRoleId: '498476ce-e0fe-48b0-b801-37ba7e2685c6'
};

await client.api('/servicePrincipals/9028d19c-26a9-4809-8e3f-20ff73e2d75e/appRoleAssignments')
	.post(appRoleAssignment);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\AppRoleAssignment;


$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$requestBody = new AppRoleAssignment();
$requestBody->setPrincipalId('9028d19c-26a9-4809-8e3f-20ff73e2d75e');
$requestBody->setResourceId('8fce32da-1246-437b-99cd-76d1d4677bd5');
$requestBody->setAppRoleId('498476ce-e0fe-48b0-b801-37ba7e2685c6');

$result = $graphServiceClient->servicePrincipals()->byServicePrincipalId('servicePrincipal-id')->appRoleAssignments()->post($requestBody)->wait();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Applications

$params = @{
	principalId = "9028d19c-26a9-4809-8e3f-20ff73e2d75e"
	resourceId = "8fce32da-1246-437b-99cd-76d1d4677bd5"
	appRoleId = "498476ce-e0fe-48b0-b801-37ba7e2685c6"
}

New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $servicePrincipalId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Python

# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.models.app_role_assignment import AppRoleAssignment
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = AppRoleAssignment(
	principal_id = UUID("9028d19c-26a9-4809-8e3f-20ff73e2d75e"),
	resource_id = UUID("8fce32da-1246-437b-99cd-76d1d4677bd5"),
	app_role_id = UUID("498476ce-e0fe-48b0-b801-37ba7e2685c6"),
)

result = await graph_client.service_principals.by_service_principal_id('servicePrincipal-id').app_role_assignments.post(request_body)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

In this example, note that the value used as the service principal id in the request URL (9028d19c-26a9-4809-8e3f-20ff73e2d75e) is the same as the principalId property in the body. The resourceId value is the id of the resource service principal (the API).

Response

The following example shows the response.

Note: The response object shown here might be shortened for readability.

HTTP/1.1 201 Created
Content-type: application/json

{
  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#appRoleAssignments/$entity",
  "id": "2jLOj0YSe0OZzXbR1Gd71fDqFUrPM1xIgUfvWBHJ9n0",
  "createdDateTime": "2021-02-15T16:39:38.2975029Z",
  "appRoleId": "498476ce-e0fe-48b0-b801-37ba7e2685c6",
  "principalDisplayName": "Fabrikam App",
  "principalId": "9028d19c-26a9-4809-8e3f-20ff73e2d75e",
  "principalType": "ServicePrincipal",
  "resourceDisplayName": "Microsoft Graph",
  "resourceId": "8fce32da-1246-437b-99cd-76d1d4677bd5"
}