Richard Vencu

This plugin extends the default XML-RPC server API with one new method for specifying author and parent post of remotely uploaded attachment files.
<ol>
<li>preserved backward compatibility with the basic method wp.uploadFile</li>
<li>simple usage, just replace with wp_extended.uploadFile and add 2 OPTIONAL parameters to the data struct: author (string, user_id of author) and parent (string, post_id of parent post)</li>
<li>without the optional parameters the new method is identical in behaviour with the basic method found in WordPress API of XML-RPC</li>
</ol>

XML-RPC Extended Media Upload

This plugin extends the default XML-RPC server API with one new method for specifying author and parent post of remotely uploaded attachment files.

Walter Ebert

This plugin does more than just using the <code>xmlrpc_enabled</code> hook, because that is only used “To disable XML-RPC methods that require authentication”.
Activating this plugin will also disable pingbacks, trackbacks, and Really Simple Discovery (RSD), because these rely on XML-RPC.
It works with any webserver, because it does not use the .htaccess file.
<h4>Testing the plugin</h4>
From the command line you can test if the plugin is working correctly using <a href="https://curl.haxx.se/" rel="nofollow ugc">cURL</a>. Replace the <code>example.com</code> link to match your website:
<pre><code>curl -d '<?xml version="1.0"?><methodCall><methodName>system.listMethods</methodName><params><param><value><string/></value></param></params></methodCall>' https://example.com/xmlrpc.php
</code></pre>
This should only return the following methods: 
– <code>system.multicall</code> 
– <code>system.listMethods</code> 
– <code>system.getCapabilities</code>

Remove XML-RPC Methods

Remove all WordPress methods from the XML-RPC API to increase security.

XML-RPC Extended Media Upload vs Remove XML-RPC Methods