Ordnance Survey · Rate Limits

Ordnance Survey Rate Limits

Ordnance Survey publishes a single estate-wide rate-limiting policy. Limits are transactions per minute, enforced PER API and PER API PROJECT, and differ between live-mode and development-mode projects. Exceeding a limit returns 429 until the rate falls back under the threshold. OS documents no RateLimit-* or Retry-After response headers and no per-plan quota table.

Ordnance Survey Rate Limits is the machine-readable rate-limit profile for Ordnance Survey on the APIs.io network, in the API Commons Rate Limits shape.

It captures 3 rate-limit definitions, measuring transactions_per_minute.

Limit state is signalled in the requestId, rateLimitRemaining, and retryAfter response headers, and an exhausted limit returns HTTP 429.

The profile also includes response codes documented for throttled.

Tagged areas include Rate Limiting, Geospatial, and Open Data.

3 Limits Exhausted: HTTP 429 requestIdrateLimitRemainingretryAfter
Transcribed from the provider's documentation on 2026-07-26.
View Source
Rate LimitingGeospatialOpen Data

Limits

Live-mode project per API per project
transactions_per_minute · minute
600
Each API in a live project can perform up to 600 transactions per minute.
Development-mode project per API per project
transactions_per_minute · minute
50
Each API in a development (dev) project can handle a maximum of 50 transactions per minute.
OS Places API Partner trial per API Key across an account
transactions_per_minute · minute
50
Enforced for the duration of the OS Places API Partner trial and applies to all projects with an OS Places API Key across an account.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/ordnance-survey-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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