This is a SDK for accessing Federal APIs, not just Department of Labor. It is compatible with APIs from NOAA, Department of Energy, Department of Education, Department of Transportation, the EPA, and many more. Until the Swift programming language becomes more stable, this SDK is considered to be in Beta. See the API documentation for detailed instructions on getting started, including extensive code samples.
Earlier this month, the Huffington Post announced the release of the HuffPost Pollster API, which provides developers programmatic access to the results of thousands of political opinion polls gathered and published by the Huffington Post.
As a DC-area resident, I've been one of many local developers saying that the DC Metro needs some sort of API. If anything, just to be able to build or integrate transit routes into existing apps. The wait appears over and the Washington Metropolitan Area Transit Authority now has an API.
Fhoster's Livebase API is a built-in REST API supporting HTML5, JSON and XML that allows users to create databases in cloud. Details on the API guide you through 5 steps. First is accessing a cloudlet. Fhoster defines a cloudlet as "A small piece of cloud just for you. It contains a dedicated MySQL database and everything you need to execute your models." The second step is accessing an application within the Cloudlet. Third is access a class within the application. Fourth is retrieving a structured object.