@vwbusguy As per usual, corresponding source code for open source components is provided, at minimum, to those who receive a copy of the software or a device that includes the software.
E.g., https://www.amazon.com/gp/help/customer/display.html?nodeId=201626480 for Alexa devices and https://www.amazon.com/gp/help/customer/display.html?nodeId=201452680 for FireTV devices.