You can use K2's Rest Broker to talk to the Azure DevOps APIs. You can learn more about those APIs here: https://docs.microsoft.com/en-us/rest/api/azure/devops/?view=azure-devops-rest-5.0
MSFT most likely provides a swagger file to use, but that can cause a lot of noise. To get started, take a look at this KB article that will arm you with the knowledge to get started with the Rest, Swagger and the Rest Service Broker. https://help.k2.com/kb001786
or if you want to jump right in to trying to create your own swagger with Rest United, check his KB out https://help.k2.com/kb001758
It should be doabe, I haven't worked with the Azure DevOps APIs so I can't comment what nuances there may be with working with those APIs, but this should get you started.
Ping back if you have any questions.