CitySDK is a “service development kit” for cities and developers that aims at harmonizing application programming interfaces (APIs) across cities.

CitySDK APIs enable new services and applications to be rapidly developed, scaled and reused through providing a range of tools and information for both cities and developers.

In the CitySDK project that started in January 2012, 8 cities across Europe have worked together to create some re-usable interfaces and processes. CitySDK toolkit provides all the information you will need to begin developing applications in your city. Harmonized Smart City API Cook Book introduces to you the opportunities APIs offer for cities, developers and companies. It also gives concrete examples of the use of the current Smart City APIs created by the six largest cities in Finland in the 6Aika Open Data and Interfaces project.

During the development of the CitySDK we concentrated on “participation”, “mobility” and “tourism” as three of the most common interactions that citizens have with their municipality. This resulted in three APIs: Open311 API, Linked Data API and Tourism API as well as useful resources related to the API usage and implementation.