The Google Spreadsheets Data API allows client applications to view and update Spreadsheets content in the form of Google Data API feeds.
Your client application can request a list of a user's spreadsheets, edit or delete content in an existing Spreadsheets worksheet, and query the content in an existing Spreadsheets worksheet.
This developer's guide consists of the following sections. Note that some client libraries have been upgraded to work with version 3.0 of the Data API, while other client libraries use older versions.
To learn about the client library for a particular programming language, select the corresponding section. To learn more about the underlying protocol used by all the client libraries, select the Protocol section.
Each section of the guide covers the same material: how to get started and how to perform basic operations using a particular client library.
For information on what's changed in version 3, see the release notes.