Set up a connection
Once a new project with a new map has been set up, select Map > Add Data > _From Path.
Add an API URL and set up custom parameters
In the Add Data From Path dialog:
Path: Enter the URL for OS Vector Tile API, excluding the API Key. For example, https://api.os.uk/maps/vector/v1/vts.
Service type: Select _Vector Tile Service
ESRI ArcGIS Pro Add Data From Path dialog. Select Custom request parameters and enter the following:
The required coordinate reference system – 27700 or 3857
[Insert your OS API Key here]
ESRI ArcGIS Pro Add Data From Path dialog with custom request parameters set. _The layer will then display in the Contents panel and the data will display on the map:
ESRI ArcGIS Pro UI showing OS Vector Tile API in the map area.