---
title: Access Application Insights API to query telemetry
slug: dxp/docs/access-application-insights-api-for-querying-telemetry
docTags: 
createdAt: 2026-07-30T20:33:07.109Z
---

**Application Insights API Access** lets you query telemetry from Application Insights for a specific environment.

## Generate API credentials

1. Go to your project in the DXP portal and select the **API** tab.
2. Select an environment and click **Generate API Access** in the **Application Insights API Access** section. This action generates and displays the information needed to access Application Insights. Credentials last for **1 year** after being generated and will need to be re-generated after that point.

:::hint{type="danger"}
**Warning**
This action removes all previously generated secret credentials. Any access using previously generated credentials will be lost.

The secret is only shown once, while other variables are static.
:::

![](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/skZF13f8Qu22WlCLwQdB4_fc2f8a9946fc78b84fcd88af713532a86c0b711968e6f8e4af9a5cfeb902974c-image.png)

## Access to Application Insights through the API

1. Acquire Token (OAuth 2.0 Client Credentials). Replace `TENANT_ID`, `CLIENT_ID`, and `SECRET` with your information from the previous section.

```curl
curl -X POST \
  -H "Content-Type: application/x-www-form-urlencoded" \
  https://login.microsoftonline.com/TENANT_ID/oauth2/token \
  -d "grant_type=client_credentials&client_id=CLIENT_ID&client_secret=SECRET&resource=https%3A%2F%2Fapi.applicationinsights.io"
```

The response contains your `access_token`.

2. Run an Analytics Query. Replace `APPLICATION_INSIGHTS_ID` with your information from the previous section.

```curl
curl -X GET \
  -H "Authorization: Bearer ACCESS_TOKEN" \
"https://api.applicationinsights.io/v1/apps/APPLICATION_INSIGHTS_ID/query?query=requests%20%7C%20take%2010"
```

## Access to Application Insights through code

Replace `APPLICATION_INSIGHTS_ID`, `TENANT_ID`, `CLIENT_ID`, and `SECRET` with your information from the [Generate API credentials](docId\:r8Wrxv79S81AvySVVWqIm) section.

```csharp
using System.Net.Http.Headers;
using System.Text;
using System.Text.Json;
using Azure.Identity;

public class ApplicationInsightsDataQuery {

  public static async Task Main(string[] args) {
    try {
      string ApplicationId = "APPLICATION_INSIGHTS_ID";
      string tenantId = "TENANT_ID";
      string clientId = "CLIENT_ID";
      string clientSecret = "SECRET";

      // Authenticate with Service Principal
      var credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
      var token = await credential.GetTokenAsync(
        new Azure.Core.TokenRequestContext(
          new [] {
            "https://api.applicationinsights.io/.default"
          }
        )
      );

      using var httpClient = new HttpClient();

      httpClient.DefaultRequestHeaders.Authorization =
        new AuthenticationHeaderValue("Bearer", token.Token);

      // Example query: last 5 requests
      var query = new {
        query = "requests | take 5"
      };

      var content = new StringContent(JsonSerializer.Serialize(query), Encoding.UTF8, "application/json");

      var response = await httpClient.PostAsync(
        $ "https://api.applicationinsights.io/v1/apps/{ApplicationId}/query",
        content
      );

      var result = await response.Content.ReadAsStringAsync();
      Console.WriteLine(result);
    } catch (Exception ex) {
      Console.ForegroundColor = ConsoleColor.Red;
      Console.WriteLine($"\nAn error occurred while attempting to query Application Insights:");
      Console.WriteLine($"Error Type: {ex.GetType().Name}");
      Console.WriteLine($"Message: {ex.Message}");
      Console.ResetColor();
    }
  }
}
```

:::hint{type="info"}
**Note**
Optimizely cannot assist with troubleshooting third party integration functionality that leverages the above Application Insights credentials. Optimizely can only provide guidance on setting up access to Application Insights.
:::