Most interesting part is a JSON response can be parsed to an array and then the elements can be accessed by index and value or even be iterated. ; The URL to test the WeatherForecast API. You can override this by specifying one in the request. Response body: JSON value check. Instead of defining the json parameter as a string to the curl command line, use the nifty jo CLI tool to define JSON as series of key value pairs and pipe the output through curl. Postman tests can use Chai Assertion Library BDD syntax, which provides options to optimize how readable your tests are to you and your collaborators. The function inside the test represents an assertion. Additionaly it is important to note that this will only affect the next request being executed. So many of us facing problems to extract the data from the long nested JSON in postman. For navigating large responses, select the down arrows next to a line to collapse large sections of the response. The Swagger page /swagger/index.html is displayed. pm.test("value of per_page field is 6",function { var jsonData = pm.response.json(); pm.expect(jsonData.per_page).to.eql(6); }); As you can see above, weve first stored the JSON response of the request in the jsonData local variable and then added the assertion in the pm.expect() block. Set the value of your body; Change request type to GET; Send request and the body is included; You answer solved my other problem ,I was getting unsupported media for get type, and I changed to application json after following your steps. Render an HTML template with a