With apic you can not only can you run APIs and view response but also test them by adding test cases for the APIs. You can add test cases to your requests under the Scripts tab in the Request panel. You can add 2 types of scripts; pre-run script which is executed before the request is made and post-run script which is executes after the response is received.
Each test case will have a name and a test criteria. For example in the test case
assertTrue("Status Code is 201",$response.status===201);
"Status Code is 201" is the test case name and
$response.status===201 is the test condition.
Alternatively you can also use
TESTS["Status Code is 201"] = $response.status===201
To know what all you can do with scripts please refer to the list of APIs and functions provided by apic.