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Chat.ReadBasic.WhereInstalled

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Application Read User Scope

Allows the app to read names and members of all one-to-one and group chats in Microsoft Teams where the associated Teams application is installed, without a signed-in user.

Delegated Access App-Only Access

Permission Details

Application Permission

Read names and members of all chat threads where the associated Teams application is installed.

Allows the app to read names and members of all one-to-one and group chats in Microsoft Teams where the associated Teams application is installed, without a signed-in user.

Properties

Property Type Description
id string The unique identifier for an entity. Read-only.
locale string Locale of the chat message set by the client. Always set to en-us.
deletedDateTime date-timeNullable Read only. Timestamp at which the chat message was deleted, or null if not deleted.
hostedContents microsoft.graph.chatMessageHostedContent collection Content in a message hosted by Microsoft Teams - for example, images or code snippets.
body microsoft.graph.itemBody
subject stringNullable The subject of the chat message, in plaintext.
importance microsoft.graph.chatMessageImportance
onBehalfOf object User attribution of the message when bot sends a message on behalf of a user.
replyToId stringNullable Read-only. ID of the parent chat message or root chat message of the thread. (Only applies to chat messages in channels, not chats.)
etag stringNullable Read-only. Version number of the chat message.
createdDateTime date-timeNullable Timestamp of when the chat message was created.
mentions microsoft.graph.chatMessageMention collection List of entities mentioned in the chat message. Supported entities are: user, bot, team, channel, chat, and tag.
summary stringNullable Summary text of the chat message that could be used for push notifications and summary views or fall back views. Only applies to channel chat messages, not chat messages in a chat.
lastEditedDateTime date-timeNullable Read only. Timestamp when edits to the chat message were made. Triggers an 'Edited' flag in the Teams UI. If no edits are made the value is null.
webUrl stringNullable Read-only. Link to the message in Microsoft Teams.

Showing 15 of 26 properties. View all on Microsoft Learn →

JSON Representation

JSON representation
{
  "id": "String",
  "locale": "String",
  "deletedDateTime": "String",
  "hostedContents": "[...]",
  "body": "microsoft.graph.itembody",
  "subject": "String",
  "importance": "microsoft.graph.chatmessageimportance",
  "onBehalfOf": "{...}",
  "replyToId": "String",
  "etag": "String",
  "createdDateTime": "String",
  "mentions": "[...]",
  "summary": "String",
  "lastEditedDateTime": "String",
  "webUrl": "String",
  "messageHistory": "[...]",
  "policyViolation": "{...}",
  "messageType": "microsoft.graph.chatmessagetype",
  "lastModifiedDateTime": "String",
  "chatId": "String"
}

Relationships

Relationship Type Description
installedApps teamsAppInstallation collection A collection of all the apps in the chat. Nullable.
members conversationMember collection A collection of all the members in the chat. Nullable.
messages chatMessage collection A collection of all the messages in the chat. Nullable.
tabs teamsTab collection A collection of all the tabs in the chat. Nullable.
pinnedMessages pinnedChatMessageInfo collection A collection of all the pinned messages in the chat. Nullable.
lastMessagePreview chatMessageInfo Preview of the last message sent in the chat. Null if no messages are sent in the chat.

Graph Methods

Delegated access App-only access
Methods
GET /chats/{chat-id}
GET /me/chats/{chat-id}
GET /subscriptions
GET /subscriptions/{id}
GET /users/{user-id | user-principal-name}/chats/{chat-id}
POST /subscriptions
POST /subscriptions/{subscriptionsId}/reauthorize
PATCH /subscriptions/{id}
DELETE /subscriptions/{subscription-id}
Methods
GET /chats/{chat-id}
GET /me/chats/{chat-id}
GET /subscriptions
GET /subscriptions/{id}
GET /subscriptions/getVapidPublicKey
GET /users/{user-id | user-principal-name}/chats/{chat-id}
POST /subscriptions
POST /subscriptions/{subscriptionsId}/reauthorize
PATCH /subscriptions/{id}
DELETE /subscriptions/{subscription-id}

Code Examples

C# / .NET SDK
// Install: dotnet add package Microsoft.Graph
// Install: dotnet add package Azure.Identity
using Microsoft.Graph;
using Azure.Identity;



// Application permissions - daemon/service app
var tenantId = "YOUR_TENANT_ID";
var clientId = "YOUR_CLIENT_ID";
var clientSecret = "YOUR_CLIENT_SECRET";

var credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
var graphClient = new GraphServiceClient(credential);

// Example: GET /users/{user-id}
var users = await graphClient.Users.GetAsync();
foreach (var user in users?.Value ?? [])
{
    Console.WriteLine($"User: {user.DisplayName}");
}
JavaScript / TypeScript
// npm install @azure/msal-browser @microsoft/microsoft-graph-client
import { PublicClientApplication } from "@azure/msal-browser";
import { Client } from "@microsoft/microsoft-graph-client";
import { AuthCodeMSALBrowserAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/authCodeMsalBrowser";

const msalConfig = {
    auth: {
        clientId: "YOUR_CLIENT_ID",
        authority: "https://login.microsoftonline.com/YOUR_TENANT_ID"
    }
};

const pca = new PublicClientApplication(msalConfig);
await pca.initialize();



// Application: Use client credentials (Node.js backend only)
// npm install @azure/identity @microsoft/microsoft-graph-client
import { ClientSecretCredential } from "@azure/identity";
import { TokenCredentialAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/azureTokenCredentials";

const credential = new ClientSecretCredential(
    "YOUR_TENANT_ID",
    "YOUR_CLIENT_ID", 
    "YOUR_CLIENT_SECRET"
);

const authProvider = new TokenCredentialAuthenticationProvider(credential, {
    scopes: ["https://graph.microsoft.com/.default"]
});

const graphClient = Client.initWithMiddleware({ authProvider });
const result = await graphClient.api("/users").get();
console.log(result);
PowerShell
# Install Microsoft Graph PowerShell module
Install-Module Microsoft.Graph -Scope CurrentUser



# Application access with certificate
$params = @{
    ClientId = "YOUR_CLIENT_ID"
    TenantId = "YOUR_TENANT_ID"
    CertificateThumbprint = "YOUR_CERT_THUMBPRINT"
}
Connect-MgGraph @params

# Or with client secret (not recommended for production)
# Connect-MgGraph -ClientSecretCredential $credential

# Example: GET /users
$result = Invoke-MgGraphRequest -Method GET -Uri "https://graph.microsoft.com/v1.0/users"
$result | ConvertTo-Json -Depth 5

# Always disconnect when done
Disconnect-MgGraph
Python
# pip install msgraph-sdk azure-identity
from azure.identity import InteractiveBrowserCredential, ClientSecretCredential
from msgraph import GraphServiceClient
import asyncio



# Application permissions - client credentials
credential = ClientSecretCredential(
    tenant_id="YOUR_TENANT_ID",
    client_id="YOUR_CLIENT_ID",
    client_secret="YOUR_CLIENT_SECRET"
)
scopes = ["https://graph.microsoft.com/.default"]
client = GraphServiceClient(credential, scopes)

async def get_users():
    # Example: GET /users
    result = await client.users.get()
    for user in result.value:
        print(f"User: {user.display_name}")
    return result

asyncio.run(get_users())

App Registration

1

Navigate to Azure Portal

Go to App registrations in Microsoft Entra admin center

2

Add API Permission

Select your app → API permissions → Add a permission → Microsoft Graph

3

Select Permission Type

Choose Application permissions and search for Chat.ReadBasic.WhereInstalled

4

Grant Admin Consent

Application permissions always require admin consent. Click "Grant admin consent" in the Azure portal.