The Alexa Gadgets Toolkit enables you to build your own Alexa Gadget . An Alexa Gadget is an Alexa-connected accessory that interacts with compatible Amazon Echo devices over Bluetooth. By using the Alexa Gadgets Toolkit, you can: Access your gadget from an Alexa skill – Your skill can trigger gadget behaviors, and act on information it receives from your gadget. To support this, you define a Custom Interface and then use the Custom Interface Controller to access the information from an Alexa skill. Trigger gadget behaviors in reaction to Alexa's native capabilities – Outside of a skill, your gadget can receive the following information from the Echo device that it is connected to: Speechmark data – Enables your gadget to synchronize to Alexa's text-to-speech in real time. This information is provided through the SpeechData interface. Notifications – Enables the gadget to inform users that new content is ava...