- The XML Parser is a plugin for Telegraf that allows users to parse XML data into metrics, tags, and fields. - XPath queries are used in the configuration of the parser to specify which nodes should be selected from the XML document. - The [inputs.http] section of the configuration file specifies the URLs where the XML data can be retrieved. - The [inputs.http.xml] section contains settings for parsing the XML data into metrics, tags, and fields. - The parser supports multiple nodes selection, field selectors for batch processing, and other advanced features.