HTTP module connection or Custom App connection using OAuth2 to analytics.dev.azure.com

How To
1

I just started using Make this month and I would like to use our analytics.dev.azure.com to bring in Workitem data in addition to Make’s built-in Devops support. Make already has a Built-in Devops App but as far as I know, I cannot use it’s Api Call module to query analytics.dev.azure.com/{Organization} as it is a sub domain and the Api Call will only do paths relative to dev.azure.com/{Organization}. I’m really struggling with getting the OAuth2 connection made using the HTTP module connection. I’ve done everything:

  • Followed MSFT’s guidance here regarding structuring the web requests correctly: Use Azure DevOps OAuth 2.0 implementation - Azure DevOps | Microsoft Learn to gather all relevant info, the authorization endpoints, headers, query strings, request body…
  • Registered Make and the proper redirect URI at https://app.vssps.visualstudio.com/ (www.integromat.com/oauth/cb/oauth2 for HTTP module)
  • With the above registration, I have my client secret, my client id, the redirect uri mentioned above…
  • I have not pursued the Microsoft Entra path to this yet

What I’m seeing when configuring the connection in the scenario builder is the auth request to https://app.vssps.visualstudio.com/oauth2/authorize succeeds, and Make’s request to integromat.com and next.integromat.com seem to correctly include the authorization code when viewed from fiddler, but it seems Make’s follow-up request to https://app.vssps.visualstudio.com/oauth2/token generates an error, sub-error “Assertion is null” (not literal error message - i never copied it down)

Just generally - is there something special anyone knows of, to make an OAuth2 connection to Azure Devops? Thank you everyone!!!