---
title: "Ordnance Survey (@ordnance-survey)"
description: "Ordnance Survey OS Data Hub APIs: the key-free, self-documenting OS NGD OpenAPI specs."
account: "ordnance-survey"
---

# Ordnance Survey

Ordnance Survey OS Data Hub APIs: the key-free, self-documenting OS NGD OpenAPI specs.

## APIs

4 public APIs with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/ordnance-survey/feed.md

- [OS NGD API – Features](https://skmtc.dev/ordnance-survey/apis/os-ngd-api-features.md): Geospatial: list OS NGD feature collections and retrieve features, schemas and queryable attributes
- [Ordnance Survey Download API](https://skmtc.dev/ordnance-survey/apis/ordnance-survey-download-api.md): Geospatial data: list OpenData products and data packages, check versions, get download links
- [OS NGD API – Features](https://skmtc.dev/ordnance-survey/apis/ngd-features.md): Geospatial: query Ordnance Survey NGD feature collections, schemas and individual map features
- [OS NGD API - Tiles](https://skmtc.dev/ordnance-survey/apis/ngd-tiles.md): Mapping: vector tiles, styles, tiling schemes and geospatial collections for building maps