Abstract: Technologies are described for verifying the integrity of data transmitted between a firmware and a baseboard management controller (“BMC”). During a first verification phase, a data integrity tool compares system inventory data provided by firmware protocols to a system inventory module to system inventory data in a device instance format. During a second verification phase, the data integrity tool verifies operation of a firmware conversion module by comparing the system inventory data in the device instance format to the system inventory data in a JavaScript Object Notation (“JSON”) format. During a third verification phase, the data integrity tool retrieves the system inventory data from a management server and compares the system inventory data retrieved from the management server to the system inventory data previously transmitted to the management server. Identified discrepancies can be utilized to modify the system inventory module, the firmware conversion module, or the management server.