Guides

The following guides provide stepwise instructions for accessing the WhenFresh API via HTTP.

• Quick Start
• Authenticating with the API
• Purchasing Variables from a Catalog

Most of our data is exposed on the API on the Spatial Address catalog resource, so obtaining a UPRN first is a common pattern.

• Obtain a UPRN when you only have an address string (Address Matching)
• Obtain UPRNs for a Postcode
• Obtain a UPRN from a Royal Mail UDPRN or UMRRN
• Obtain a UPRN from a HMLR Title Number

Advanced scenarios (please contact us if you feel a need for those)

• Retrieving the Catalog for a Spatial Address
• Long running requests / Asynchronous processing

Special variables

• Land Registry Ownership Verification