What’s the Arduino Cosm library? It’s the latest version of the library used to communicate with Cosm, an Internet of Things service now known as Pachube. “Cosm is the platform, API and community where devices, information, developers, apps and commercial applications come together to bring connected products and ideas to life.”
You can find the latest version of the Arduino library for use with Cosm on GitHub. The library requires the HTTP Client library also available from GitHub.