Technical specification

This technical specification explains the content of the OS Vector Tile API and the methods that you can use to call it.

If you are not familiar with the OS Vector Tile API please read the overview documentation before proceeding.

Core concepts

This specification does not cover core concepts that apply to all Ordnance Survey APIs.

Please read the following pages to learn more about OS API core concepts:

• Authentication

• Error codes

• Rate-limiting policy

API reference

OS Vector Tile API is currently available as EPSG:27700 (British National Grid which is applicable just for GB) and EPSG:3857 (Web Mercator which is a global coordinate system). The maps are available as raw information presented using compressed packets of geographic data using the Protocolbuffer Binary Format (.pbf). This provides users optimised maps which render quickly on the web and offer a slick mapping experience.

OS Vector Tile API is currently available as EPSG:27700 (British National Grid which is applicable just for GB) and EPSG:3857 (Web Mercator which is a global coordinate system). The maps are available as raw information presented using compressed packets of geographic data using the Protocolbuffer Binary Format (.pbf). This provides users optimised maps which render quickly on the web and offer a slick mapping experience.

OS Vector Tile API has three main endpoints:

Service Metadata

Service metadata for the OS Vector Tiles API.

Stylesheet

Discover compatible stylesheet.

Tile Request

Access vector tiles.