Notice: Effective May 1st, 2014, access to non-current versions of the HIW web services API will be deprecated. The current version of the services is version 5. Version 1 through 4 has been deprecated. For more information, please see here.
Notice: Effective May 1st, 2014, access to the HIW web services API will require the use of an API key. Please request an API key if you havenít done so already. In addition to this requirement, prior versions of the services (v3 and v4) will be deprecated and will no longer be accessible. All API calls must use the v5 URL shown below and include an API key as described here.