In order to get Azure Application Gateway logs with api, you must first log in to the Azure portal with an admin authorized user.
Client ID (Application ID):
Log in to the Azure Portal.
Navigate to Azure Active Directory(New name Entra).
From the left-side menu, select App registrations.
Choose your previously created application.
Copy the Application (client) ID shown on the page—this is your Client ID.
Client Secret:
Still in the same App registrations page, navigate to Certificates & secrets.
Click the New client secret button.
Enter a description and select an expiration duration, then click Add.
Immediately copy the secret value from the Value column.
Important: Once you leave this page, you cannot view the secret again.
Scope:
This value is static and should be manually entered:
https://api.loganalytics.io/.default
Workspace ID:
Log in to the Azure Portal.
Go to your Log Analytics Workspace.
Select Agents management or check the Overview page on the left-side menu.
Copy the Workspace ID displayed here.
Tenant ID:
Log in to the Azure Portal.
Go to Azure Active Directory.
On the Overview page, copy the Tenant ID (also known as Directory ID) displayed. This is the value
you should enter in the Tenant ID field.
Authorization
After you get this information, you can log in to Logsign USO and select API > Azure Application Gateway from the add source field, fill in the information and get the logs to come.