Ideal Postcodes API

ideal-postcodes.co.uk

Provides UK and international address search, postcode lookup, address cleansing and validation, plus phone and email validation, over a REST API.

The Ideal Postcodes API API uses api key authentication; has usage based pricing; offers a free tier (1-month free trial with 50 free credits, no credit card required); rate limits: 30 requests per second per IP address; exceeding returns a 503 (autocomplete has an additional rate limit). Verified 2026-07-08 with per-field source links.

Geo & Location Verified 2026-07-08 high confidence

Base URL

https://api.ideal-postcodes.co.uk/v1/

docs.ideal-postcodes.co.uk ↗

Auth

api_key

docs.ideal-postcodes.co.uk ↗

Free tier

1-month free trial with 50 free credits, no credit card required

ideal-postcodes.co.uk ↗

Pricing model

usage_based

ideal-postcodes.co.uk ↗

Pricing

Pay-as-you-go credit packs: 200 credits £9 (£0.045/lookup), 1,100 £42, 4,300 £155, 12,800 £420, 32,100 £900 (£0.028/lookup); credits valid 12 months

ideal-postcodes.co.uk ↗

Rate limits

30 requests per second per IP address; exceeding returns a 503 (autocomplete has an additional rate limit)

docs.ideal-postcodes.co.uk ↗

OpenAPI spec

https://openapi.ideal-postcodes.co.uk/openapi.json

docs.ideal-postcodes.co.uk ↗

MCP server

not documented null

no source