A system and method for hierarchically invoking reentrant methods on XML objects includes a first store for storing XML objects as an input tree; a second store for storing a resultant tree; a processor for processing the input tree to generate the resultant tree; action attribute indicia representing an API to be invoked associated with at least one object; the processor executing a depth first search through the input tree for generating the resultant tree selectively including action status child nodes for XML objects having an action attribute and new script generated from processing selective action attributes; while generating the resultant tree, the processor removing the action attribute from XML action objects successfully processed; and a reentrant processing path through the processor for processing the resultant tree as a new input tree responsive to the resultant tree including said new script or failure status child nodes.