DEVONagent Pro comes with a long list of ready-to-use plugins for popular search engines. However, DEVONagent Pro makes it possible to write your own plugins to query sites for which there isn't a built-in plugin provided. Here is all what you need. The tutorial gives you a jump-start on how to write your own plugins for DEVONagent Pro, e.g., for integrating a search engine we haven't thought of yet. And the XML and JSON keys descriptions explain all the XML tags/JSON keys you can use in developing the perfect plugin.