Open APIs Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä! Submit Last created Popular Relevance Names in ascending order Names in descending order Last modified Go 4 datasets found Address API of Uusimaa You can use the address interface of Uusimaa to search for official addresses and their coordinates for the entire Uusimaa region. The interface provides the coordinates, postal... JSON XML Helsinki Metropolitan Area service register REST API Helsinki Metropolitan Area (Helsinki, Espoo, Vantaa and Kauniainen) service register REST API. The interface offers possibilities to make queries and use the data in the... XML JSON The Issue Reporting API of the City of Helsinki NOTE: The API is currently not in use due to renewal of the information system. The renewed API is scheduled to be published in 2024. An API to the City of Helsinki digital... XML JSON Open decision API of Helsinki Note (12/2023): OpenAhjo is not in production, so the up-to-dateness or availability of its data cannot be guaranteed. You can search for public decision data for the City of... XML JSON