Methods and computer systems for locking in offsets associated with resource requests. Receiving input of a resource request amount for a resource request, the resource request associated with a defined period of time and a property. Determining, based on data indicating one or more characteristics of the property, a metric representing an expected quantity of emissions over the defined period of time. Identifying an application programming interface capable of processing a request to lock in an amount for an offset product. Using the application programming interface and the metric to determine an offset amount to offset the expected quantity of emissions. Determining a periodic data transfer amount for the resource request that is based on the resource request amount and the offset amount. Outputting the periodic data transfer amount. Receiving an instruction to initiate the resource request and using the application programming interface to lock in the offset amount.