A method and system for throttling a volume of request messages to a service application stored within a service provider (SP) computer system through an open application programming interface (API) platform is provided. The SP computer system is in communication with a memory device. The method includes storing a throttling profile for a developer application within the memory device wherein the throttling profile includes at least a throttling amount threshold and a throttling time period, receiving at the API platform a request message initiated by the developer application wherein the request message is included within a volume of request messages initiated by the developer application, identifying the request message as being associated with the developer application, retrieving the throttling profile for the developer application, and validating the volume of request messages as complying with the throttling profile.