Ordnance Survey
Ordnance Survey is Great Britain's national mapping agency, a government-owned company that maintains the addressing and mapping layer the UK property market runs on - the Unique Property Reference Number (UPRN), the TOID, AddressBase, and the OS National Geographic Database. The UK has no MLS; residential listings sit behind the Rightmove/Zoopla duopoly and agency CRM software, so the open layer in this market is public-sector rather than private, and OS is one half of it alongside HM Land Registry. Its API posture is unusually honest for this sector - the OS Data Hub is a self-serve developer portal with real machine-readable contracts, including OGC-conformant OpenAPI 3.0 documents served live and anonymously at api.os.uk for OS NGD API - Features and Tiles, plus published OpenAPI for the OS Downloads and OS Net APIs. The split that matters is licensing, not reachability: OS OpenData products (OS Open UPRN, OS Open TOID, Code-Point Open, OS Open Names, Boundary-Line, OS Open Linked Identifiers) are free and downloadable with no API key at all through the OS Downloads API, while the premium addressing and mapping products behind OS Places API, OS Features API, and the NGD collections require a paid Premium plan or Public Sector Geospatial Agreement (PSGA) membership. RESO plays no part here - the Real Estate Standards Organization standards are a US MLS construct and appear nowhere in the OS estate. Home market is the United Kingdom.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Ordnance Survey the way a machine reads it — 50 machine-readable artifacts across 10 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Ordnance Survey scores 57.9/100 (strong), with a separate agent-readiness read of 31/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Ordnance Survey
Each block below is one kind of artifact we hold for Ordnance Survey. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 25
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
OS Match & Cleanse API (withdrawn)
Matched and cleansed supplied address strings against OS authoritative addressing data, returning a matched AddressBase record and confidence score. WITHDRAWN: end of life 31 Ma...
OS OAuth 2 API
OAuth 2.0 client credentials token service issuing time-limited access tokens for OS Data Hub APIs, so project API keys need not be embedded in browser code. The token URL is ht...
Ordnance Survey Bounding box API
Find all addresses inside a bounding box.
Ordnance Survey Collections API
Retrieve information about collections
Ordnance Survey Data Collections API
The Data Collections API from Ordnance Survey — 2 operation(s) for data collections.
Ordnance Survey Data Packages API
Operations providing access to data packages. To access data packages you must supply a valid API key or OAuth 2 access token.
Ordnance Survey Features API
Retrieve features
Ordnance Survey Find API
A free string text search of OS Names, intended to be an ambiguous/fuzzy search.
Ordnance Survey Get Capabilities API
Returns a metadata document describing the WFS service provided by the server as well as valid WFS operations and parameters.
Ordnance Survey Landing Page API
Ordnance Survey NGD API – Features
Ordnance Survey Nearest API
Find the features closest to a given point.
Ordnance Survey Open Data API
Operations providing access to OpenData products.
Ordnance Survey OS OpenData Users API
Operations available to customers using the OpenData plan
Ordnance Survey Polygon API
Find all addresses in a polygon or multi-polygon object.
Ordnance Survey Postcode API
A search based on a property’s postcode
Ordnance Survey Radius API
Find all addresses that intersect a given circle.
Ordnance Survey Rinex API
The Rinex API from Ordnance Survey — 5 operation(s) for rinex.
Ordnance Survey Service Metadata API
Service Metadata for OS Vector Tiles API
Ordnance Survey Stations API
The Stations API from Ordnance Survey — 5 operation(s) for stations.
Ordnance Survey Styles API
The Styles API from Ordnance Survey — 5 operation(s) for styles.
Ordnance Survey Tile Request API
Access and download data for a specific tile
Ordnance Survey Tile Sets API
The Tile Sets API from Ordnance Survey — 2 operation(s) for tile sets.
Ordnance Survey Tiling Schemes API
The Tiling Schemes API from Ordnance Survey — 2 operation(s) for tiling schemes.
Ordnance Survey UPRN API
A search that takes a UPRN as the search parameter.
Ordnance Survey Vector Tiles API
The Vector Tiles API from Ordnance Survey — 2 operation(s) for vector tiles.
Scroll within the panel for all 25 ·
Postman Collections 10
A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.
Ready-to-run Postman collections for exercising this provider's APIs.
Ordnance Survey Download API
POSTMANOS Features API
POSTMANOS Linked Identifiers API
POSTMANOS Maps API
POSTMANOS Names API
POSTMANOS NGD API – Features
POSTMANOS NGD API - Tiles
POSTMANOS Net API
POSTMANOS Places API
POSTMANOS Vector Tiles API
POSTMANScroll within the panel for all 10 ·
Open Collections 8
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
OS Features API
OPEN COLLECTIONOS Linked Identifiers API
OPEN COLLECTIONOS Maps API
OPEN COLLECTIONOS Names API
OPEN COLLECTIONOS NGD API – Features
OPEN COLLECTIONOS NGD API - Tiles
OPEN COLLECTIONOS Places API
OPEN COLLECTIONOS Vector Tiles API
OPEN COLLECTIONScroll within the panel for all 8 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Ordnance Survey Rate Limits
RATE LIMITSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Ordnance Survey — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 6
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 10
MCP servers, agent skills, and machine-readable catalogs
Scroll within the panel for all 10 ·
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 8
Status, limits, changes, and where to get help
Scroll within the panel for all 8 ·
Commercial 6
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 14
Properties that don't map to a standard resource type
Scroll within the panel for all 14 ·
← All providers · Data indexed from github.com/api-evangelist/ordnance-survey · machine-readable index on apis.io
This is an independent, third-party profile of Ordnance Survey, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.