A method for validating a service operation performed on a device configured to be serviced on-site, the device comprising a processor component, and a data storage or memory storing processor executable routines which, when invoked and executed by the processor, implement one or both of an interface agent and validation agent, which alone or in combination cause the method to be carried out, the method comprising: receiving a service completion indication at the device upon completion of a service operation to the device; calculating expected performance metrics based on one or more performance models for the device; generating actual performance metrics for the device by operating the device after receipt of the service completion indication; in response to the actual performance metrics being within a specified threshold of the expected performance metrics, generating a completion notification that the service is complete; and in response to the actual performance metrics not being within the specified threshold: requesting a list of comparison devices from a look-up agent (180, 182) based on one or more criteria specified by the validation agent, in which the look-up agent is implemented as a database that stores data of searchable devices; determining whether any of the searchable devices meet the one or more criteria; if none of the searchable devices meets the one of more criteria, generating a notification that the service operation is not acceptable; and if any of the searchable devices meet the one or more criteria: identifying those devices as comparison devices so as to generate the list of comparison devices; based on the list of comparison devices, requesting comparison performance metrics from each listed comparison device; comparing the actual performance metrics to the comparison performance metrics; and based on the comparison of the actual performance metrics to the comparison performance metrics, generating a notification (260, 280) that the service operation is either satisfactory or not satisfactory. receiving a service completion indication at the device upon completion of a service operation to the device; calculating expected performance metrics based on one or more performance models for the device; generating actual performance metrics for the device by operating the device after receipt of the service completion indication; in response to the actual performance metrics being within a specified threshold of the expected performance metrics, generating a completion notification that the service is complete; and in response to the actual performance metrics not being within the specified threshold: requesting a list of comparison devices from a look-up agent (180, 182) based on one or more criteria specified by the validation agent, in which the look-up agent is implemented as a database that stores data of searchable devices; determining whether any of the searchable devices meet the one or more criteria; if none of the searchable devices meets the one of more criteria, generating a notification that the service operation is not acceptable; and if any of the searchable devices meet the one or more criteria: identifying those devices as comparison devices so as to generate the list of comparison devices; based on the list of comparison devices, requesting comparison performance metrics from each listed comparison device; comparing the actual performance metrics to the comparison performance metrics; and based on the comparison of the actual performance metrics to the comparison performance metrics, generating a notification (260, 280) that the service operation is either satisfactory or not satisfactory. requesting a list of comparison devices from a look-up agent (180, 182) based on one or more criteria specified by the validation agent, in which the look-up agent is implemented as a database that stores data of searchable devices; determining whether any of the searchable devices meet the one or more criteria; if none of the searchable devices meets the one of more criteria, generating a notification that the service operation is not acceptable; and if any of the searchable devices meet the one or more criteria: identifying those devices as comparison devices so as to generate the list of comparison devices; based on the list of comparison devices, requesting comparison performance metrics from each listed comparison device; comparing the actual performance metrics to the comparison performance metrics; and based on the comparison of the actual performance metrics to the comparison performance metrics, generating a notification (260, 280) that the service operation is either satisfactory or not satisfactory. identifying those devices as comparison devices so as to generate the list of comparison devices; based on the list of comparison devices, requesting comparison performance metrics from each listed comparison device; comparing the actual performance metrics to the comparison performance metrics; and based on the comparison of the actual performance metrics to the comparison performance metrics, generating a notification (260, 280) that the service operation is either satisfactory or not satisfactory.