Ensure That Your XML-RPC Interface Is Activated

• 1). Log into your WordPress Admin page. On the left side, look for the "Settings" tab and click "Writing."
  
  
• 2). On the "Writing" page, look under the "Remote Publishing" header for the "XML-RPC" setting.
  
  
• 3). The checkbox next to "XML-RPC" should be checked. If it is not checked, check it and then click "Save Changes." Once it is checked, your site will be ready to offer XML-RPC services.
  
  

Find Your API Endpoint URL

• 1). In your WordPress Admin page, look on the left for the "Settings" tab, and click on "General."
  
  
• 2). In the "General Settings" page, look for the "Site Address (URL)" setting. Copy the text in the box next to it and paste that text into a text file or other location where you want to record your API endpoint URL.
  
  
• 3). Add the text "/xmlrpc.php" to the end of the text that you pasted. This is your API endpoint URL.
  
  
• 4). Test your work by copying the API endpoint URL and pasting it into your browser's address bar. You should receive a simple error message stating "XML-RPC server accepts POST requests only." This means your API endpoint URL is correct and your XML-RPC service is working.