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Ordnance Survey

OS NGD API - Features

OGC API - Features conformant access to the OS National Geographic Database, serving building, land, address, and transport feature collections as GeoJSON. The OpenAPI 3.0.1 description is served live and anonymously at /api.

Documentation Provider Profile APIs.io OpenAPI GitHub

OS NGD API - Features is one of 12 APIs that Ordnance Survey publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Features, OGC API, Geospatial, and Property Data. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 8 operations across 8 paths, organized into 3 resource areas, and defines 15 schemas. It is described by OpenAPI 3.0.1, at version v1.8.1.

Requests are made against a single base URL, https://api.os.uk/features/ngd/ofa/v1.

8 operations 8 paths 15 schemas 8 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
v1.8.1
Base URL
https://api.os.uk/features/ngd/ofa/v1
Authentication
API Key, API Key, OAuth 2.0
Resource Areas
3

Authentication & Security 3

OS NGD API - Features declares 3 security schemes for authenticating requests. An API key is passed in the query as key (api-key). An API key is passed in the header as key (api-key-header). It supports OAuth 2.0 (oauth2) using the clientCredentials flow.

Paths & Operations 8

Across 8 paths, the API surfaces 8 operations — 8 GET. They span 3 resource areas: Landing Page, Collections, Features. Each is listed below with its method, path, parameters, and response codes.

Landing Page 2

Ordnance Survey NGD API – Features

GET
/
OS NGD API – Features landing page
getLandingPageResponse → 200400405406
GET
/conformance
OS NGD API – Features conformance page
getConformanceResponse → 200400405406
Collections 4

Retrieve information about collections

GET
/collections
Get list of all OS NGD feature collections
getAllCollections → 200400405406
GET
/collections/{collectionId}
Get a single OS NGD feature collection
getCollectionById 1 param → 200400404405406
GET
/collections/{collectionId}/schema
Get schema for a single OS NGD feature collection
getSchema 1 param → 200400404405406
GET
/collections/{collectionId}/queryables
Get a list of queryable attributes for this feature collection
getCollectionQueryables 1 param → 200400404405406
Features 2

Retrieve features

GET
/collections/{collectionId}/items
Retrieve features in the feature collection
getItems 10 params → 200400404405406504
GET
/collections/{collectionId}/items/{featureId}
Retrieve a feature from the feature collection
getItemById 3 params → 200400404405406504

Schemas 15

The contract defines 15 schemas that model the data the API accepts and returns. The most detailed are Queryable (13 properties), CollectionResponse (8 properties), QueryablesResponse (6 properties), Feature (4 properties). Each schema is shown below with its type and property counts.

LandingPageResponse
object
3 properties
Link
object
4 properties
ConformanceResponse
object
1 property
CollectionResponse
object
8 properties
CollectionsResponse
object
3 properties
Extent
object
2 properties
SpatialExtent
object
2 properties
TemporalExtent
object
2 properties
Queryable
object
13 properties
QueryablesResponse
object
6 properties
Coordinate
object
2 properties
Feature
object
4 properties
FeatureCollectionResponse
object
4 properties
Geometry
object
2 properties
Type
object

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

ordnance-survey-ngd-features-openapi.json Raw ↑

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OS Match & Cleanse API (withdrawn)
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OS Features API
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OS OAuth 2 API
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#Features#OGC API#Geospatial#Property Data
← Back to O APIs
API Details
ID
ordnance-survey:os-ngd-api-features
Base URL
https://api.os.uk/features/ngd/ofa/v1
Docs
https://docs.os.uk/os-apis/accessing-os-apis/os-ngd-api-features
Provider
Ordnance Survey
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