The Expo API defines a set of Web services enabling customers to programmatically access the Expo classifieds listings database, a collection of location-tagged classifieds listings in categories like merchandise, real estate, autos, jobs and commercial services.
The Expo Web service is exposed to clients in two ways:
- HTTP/GET request interface with XML response
- SOAP interface
Target Audience
This API is intended for customers and partners who want to create applications that leverage the contents of the Expo classifieds listings database. Examples of applications that might be built on this API are:
- A Web gadget displaying cars for sale in the user's city within 50 miles.
- A Web site that allows users to overlay a map of houses available for sale in Seattle on a map.
- A shopping Web site that allows users to comparison shop for used books and CDs.
If you have any feedback on using this API for writing your own code, please send us e-mail at expoapi@microsoft.com.
Accessing the Service
Every call to the API must send a unique application key that identifies the client caller. The application key is linked to the Expo account of the person who applies for the application key.
To apply for an application key:
- Go to http://expo.live.com/MyAPIKeys.aspx.
- Sign into the site with Windows Live ID.
- If you haven't done so already, create your Expo Profile.
- Accept the Terms and Conditions of the API Service. The application key is displayed on the page.
To retrieve your application key at any time, simply return to http://expo.live.com/MyAPIKeys.aspx.
To generate a new application key:
- Point your browser to http://expo.live.com/MyAPIKeys.aspx and sign in.
- Click Generate New Key. This will associate a new application key with your account (and invalidate any previous keys you might have used).
Sourced from http://msdn2.microsoft.com/en-us/library/bb246476.aspx