The Clickatell Home Automation CPlus Sample Code by Clickatell demonstrates how to use the API to notify when electricity is running low, aiming to automate a user's home. It uses a Raspberry Pi and Arduino to notify via text message.
Any mobile app that does anything interesting has an API. Yet most of the apps that help you get interesting things done do not expose that API to developers. For many of us, a to-do lists are the arteries of our work-life. Some popular task apps that could be integrating the disparate parts of our lives are instead maintaining silos of task data.