What is an API request?

API stands for Application Programming Interface, meaning that any code that you can call has an API. From your question, making a request to an API, you probably talking about any kind of web hosted service that you can request via the HTTP protocol. In that case, an API is all the HTTP URIs available for you to call.

For More Information Please Refer: https://www.quora.com/What-is-an-API-request