Bases4you provides a collection of free-to-use APIs on their website. One allows users to retrieve information on a Brazilian postal code, also known as a CEP (CÃ³digo de EndereÃ§amento Postal). Another retrieves information on the population, latitude and longitude, capital, currency, etc. for a given country, or for a region, city, or state within Brazil. The last extracts data such as country, flag, state, and city from a given IP address or URL. The bases4you website and API documentation are provided solely in Portuguese.