Throughout this chapter, we looked at the various aspects of the WordPress XML-RPC API while developing practical scenarios. In order to build stable and complex custom APIs, you should have practical experience of the preceding techniques. So, I recommend that you try the following tasks to extend the knowledge gathered in this chapter:
You can measure the API usage through the number of requests.
We created an API function to list all the projects and services of the application. Try to introduce the filtering of results with additional parameters.
The custom API created in this chapter returns an array as the result. Introduce different result formats such as JSON, XML, and array, so that developers can choose their preferred format.