Yes Postcode Search API Knowledge Base API is very easy to use. All you need to do is create and send a GET request to our service. To see how easy it is, you can try calling the service with your web browser!

Just click this link: 1OK.json for JSON

or 1OK.xml for XML response checking our test YP3 1OK postcode.


  1. Getting Started - this section will guide you through the 3 easy steps to integrate with the API, get your API key and go live.
  2. Test for Free - this section contains information how to integrate with Yes Postcode Search API completely free of charge!
  3. API Reference - this section provides detailed API requests reference.

Code Examples

To make the integration with Yes Postcode Search even easier, we've prepared a sample code for you just to copy and paste to your application!