Inspecting your APIs using Fiddler and Postman

Using your browser to execute your APIs is nice enough for simple APIs that retrieve data, but as you go along and extend your APIs, you'll soon find that you need other powerful tools to test and debug what you develop. There are many tools that let you inspect and debug your APIs, but I have chosen to teach you about Fiddler and Postman because they are both simple and powerful.

Fiddler

Fiddler is a free web debugging tool that works as a proxy, logging all HTTP(S) traffic that is executed by processes in your computer. Fiddler allows you to inspect the traffic to see that exact HTTP request that was sent and the exact HTTP response that was returned. You...