The Territorial API is a tool that provides access to authoritative geoinformation in Catalonia through HTTPS requests. It integrates several functionalities designed to facilitate access, consultation, visualization and use of geographic data by users. This API follows the standards of the OGC (Open Geospatial Consortium), which guarantees interoperability with other applications and platforms. Specifically, it offers the OGC API - Features, OGC API - Processes and OGC API - Styles modules. In addition, to respond to specific demands beyond the OGC methods, the API offers customized functionalities such as downloading/visualizing the available elements of several layers at a specific point in the territory or obtaining the link to a web viewer that directly displays the selected layers, and optionally centered on a municipality.