I am using Matillion API through Postman to get Task History of Matillion instance. I am not getting expected response as mentioned in the Matillion API documentation instead i am getting some html code with status code 200 in response

Expected result - https://documentation.matillion.com/docs/2972278

Postman Request sent -

Postman URI- https://<InstanceAddress>/rest/v1/group/name/<groupName>/project/name/<projectName>/task/history

and Authorization Basic Auth -Username, Password.

Do i need to provide anything else in the request? Let me know if i am missing something.

What is the instance address you are using? Matillion internally has its own instanceIP for Metadata management. You can try using 127.0.0.1:8080 for Instance address.