400 bad request in graph API but same working in postman

Question

I am trying to hit a Get method - https://graph.microsoft.com/v1.0/me but I am getting 400 bad request. But the same API is working in Postman, with token

Answer 1

Hi Sagar,

There's a good article in Medium for using/testing graph connections.

https://mauridb.medium.com/calling-azure-rest-api-via-curl-eb10a06127

As you may know, it's a 2 step process:

• request a token using a POST request

-query your resource

To get your token, you need to go here:

curl -X POST -d 'grant_type=client_credentials&client_id=[APP_ID]&client_secret=[PASSWORD]&resource=https%3A%2F%2Fmanagement.azure.com%2F' https://login.microsoftonline.com/[TENANT_ID]/oauth2/token

Note that you will need to create a service principal for the above command.

The article shows a clever way to do it with az commands but I usually configure an app registration in Azure.

Then you can query your resource with your token.

Remember there's a different url for every resource so you really need to know what you're looking for. The example in the article I mentioned is looking at the list of subscriptions for a given tenant:

curl -X GET -H "Authorization: Bearer [TOKEN]" -H "Content-Type: application/json" https://management.azure.com/subscriptions/[SUBSCRIPTION_ID]/providers/Microsoft.Web/sites?api-version=2016-08-01

Hope that helps.