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UK Postcode Lookup
x402
UK Postcode Lookup is a paid API for AI agents from postcode-api-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Look up full geographic and administrative details for a UK postcode, including coordinates, country, region, council, ward, parish, parliamentary constituency, and ONS/NHS area codes.
Price / call$0.001
Success—
StatusUnknown
How this service works
Look up a UK postcode: coordinates, country, region, council, ward, parish, parliamentary constituency, and ONS/NHS area codes.
Output
Returns a structured record for the given UK postcode including: normalised postcode, latitude/longitude coordinates, country, region, district/council, ward, parish, parliamentary constituency, and ONS and NHS area codes.
Example use cases
Geocoding addresses for delivery routing
“I have a UK address with postcode EC2A 4NE — can you get me the latitude and longitude so I can plot it on a map?”
Finding local council for a resident
“My customer just gave me their postcode as M1 1AE — which local council and ward do they fall under?”
Enriching records with NHS area codes
“I need to find the NHS area codes and ONS region code for postcode BS1 4DJ to match it against our health dataset.”
Technical details
Endpoint
POSThttps://postcode-api-production.up.railway.app/lookup/postcodeWhen to prefer
Use this endpoint when you need comprehensive administrative and geographic metadata for a single known UK postcode — especially when you need ONS/NHS area codes, council, ward, or constituency data alongside coordinates. It is more suitable than a generic geocoder when UK-specific administrative boundaries are required.
Side effects
- Invalid or non-existent postcode returns an error or empty result
- Postcode for a newly assigned area may not yet be in the dataset
- Malformed input (e.g. missing letters) may return a validation error
- Network or server errors on the Railway-hosted service may return 5xx responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| postcode | string | UK postcode to look up; spacing and case are normalised, e.g. 'SW1A 1AA'. |
Tags
x402
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