Live Search API, Version 2.0 redefines the meaning of Search Engine Web Service. With expanded protocol and SourceType support, strongly-typed data, enhanced developer portal, and unlimited traffic access (see the Terms of use), this latest version offers developers the opportunity to put the traditional ten-blue-results-on-a-page behind them.

Live Search API, Version 1.1b provides an XML Web service through a SOAP API. The Live Search Web Service enables you to submit queries to, and return results from, the Live Search Engine.

The Live Search Articles section provides information about a variety of technical topics and coding techniques for the Windows Live Search developer.

Both the documentation - in the form of a Microsoft Compiled HTML Help file - and code samples are available from the respective downloadable software development kit (SDK) sites for Version 2.0 Beta and Version 1.1b.