# Ordnance Survey **Canonical:** https://apis.io/providers/ordnance-survey/ **Website:** https://www.ordnancesurvey.co.uk/ **APIs profiled:** 12 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. ## Kin Score — 66.8 / 100 (exemplar) Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 66.8). | Facet | Score | |---|---| | Discoverability | 92.6 | | Contract Quality | 48.9 | | Governance | 20.8 | | Operational Transparency | 86.8 | | Developer Ergonomics | 73.4 | | Commercial Clarity | 76.3 | Regulatory layer — **Government & Public Sector**: 75.9 (matched via tags). ## Agent readiness — 51.1 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | MCP Server | derived | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | verified | | OpenAPI Examples | partial | | Rate Limit Signal | documented | | Event Surface Described | no | | Agent Skills | derived | | Well Known Catalog | yes | | Consent Identity | yes | | Agent Card | no | | Dry Run Mode | no | ## APIs (12) - **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 des... - **OS NGD API - Tiles** — OGC API - Tiles conformant vector tile service over the OS National Geographic Database, including tile matrix sets and styles. The OpenAPI 3.0.1 description is served live and ... - **OS Downloads API** — Automated bulk download of OS OpenData and OS Premium datasets. The OpenData half of this API answers anonymously with no key - 26 open products including OS Open UPRN, OS Open ... - **OS Net API** — High-precision GNSS data from the OS Net network of continuously operating reference stations across Great Britain, including station metadata, health, and RINEX observation files. - **OS Places API** — Address search and geocoding over AddressBase Premium - every UPRN in the United Kingdom, Jersey, Guernsey, and the Isle of Man, with current, provisional, and historic address ... - **OS Names API** — A geographic directory of identifiable places, roads, and settlements in Great Britain, with find and nearest operations. - **OS Linked Identifiers API** — Resolves the relationships between properties, streets, and OS MasterMap identifiers - UPRN to TOID to USRN - which is the join key between OS data, HM Land Registry records, an... - **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 Features API** — OGC Web Feature Service (WFS 2.0.0) over OS MasterMap and premium feature data, with getCapabilities, describeFeatureType, and getFeature operations plus a product archive. XML/... - **OS Maps API** — Pre-rendered raster map tiles in multiple OS styles, served as OGC WMTS and as ZXY tiles. - **OS Vector Tile API** — Vector tile service delivering detailed OS MasterMap data as styleable vector tiles. - **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... ## MCP servers (1) - **ordnance-survey-mcp.yml** ## Agentic access (1) - **Ordnance Survey Agentic Access** — 62 operations · 1 acting ## Security (3) - **Ordnance Survey Authentication** — apiKey/oauth2 · 3 schemes - **Ordnance Survey Domain Security** — TLSv1.3 · HSTS · DMARC - **Ordnance Survey Vulnerability Disclosure** — Hackerone · security.txt ## Plans (1) - **Ordnance Survey Plans** ## Tags Real Estate, United Kingdom, Land Registry, Geospatial, Addressing, Open Data, Property Data, PropTech, Government, Mapping, OGC, UPRN, National Mapping, GNSS, Vector Tiles --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/ordnance-survey/). Scores are computed from the provider's own public artifacts under a published rubric.