* '''Variables''':<br/>External variables can be ''bound'' before a query is evaluated ([[REST#Assigning Variables|see below]] for more).
* '''Context''':<br/>The <code>context</code> parameter may be used to provide an initial XML context node.
* '''Options''' ({{Mark|Introduced with Version 7.1.1}}):<br/>All specified Specified [[Options]] will be interpreted by the REST server are applied before the actual operation will be performed.
* '''Serialization''':<br/>All [[Serialization]] parameters known to BaseX can be specified as query parameters. Parameters that are specified within a query will be interpreted by the REST server before the output is generated.
* '''Wrap''':<br/>The <code>wrap</code> parameter encloses all query results with XML elements, using the <code>http://basex.org/rest</code> namespace.