Controlled-environment facility resident electronic communications for controlled-environment facility resident communications and/or data devices disposed within a controlled-environment facility may employ a controlled-environment facility communications processing system, or the like. The controlled-environment facility communications processing system, may be configured to host controlled-environment facility communications access services and accept a Cross-Origin Request Sharing (CORS) request from a non-resident device. These CORS requests may be for access to the controlled-environment facility communications access services for use by a controlled-environment facility communications Application Program Interface (API) running on the non-resident device to communicate with one of the controlled-environment facility resident devices. The controlled-environment facility communications processing system, or the like, may make access to the controlled-environment facility communications access services available, such as, in a CORS response. Thereby, communication between the controlled-environment facility communications API running on the non-resident device and the target controlled-environment facility resident device may be provided.