Azure COST API call via O365 login

Question

Hi Guys,

We are using below cost api url to fetch data
https://management.azure.com/subscriptions/1313131`131313/resourceGroups/rg1/providers/Microsoft.CostManagement/query?api-version=2019-11-01

it works fine when use it below url
https://learn.microsoft.com/en-us/rest/api/cost-management/dimensions/list

But when we test in post man or other tools we receive below error
{
"error": {
"code": "AuthenticationFailed",
"message": "Authentication failed. The 'Authorization' header is missing."
}
}

We tried to pass user=xyz@zyz.com (company O365 id which has access to that resource group) and pwd=xyz in the body.

Regards,
Navin

Answer 1

@Anonymous - As mentioned, you need to pass the auth header in the request. The article below calls out options (using Postman)to authenticate to Azure Resource Manager.

Authenticate Postman against Azure Service Management API | Codit

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Answer 2

I followed below steps to resolve
https://dnavin.wordpress.com/2021/07/29/azure-cost-management-azure-api-call-with-registered-app/