Release: Amazon Mechanical Turk on 2006-06-14

Release Notes>Release: Amazon Mechanical Turk on 2006 06 14
This release of the Amazon Mechanical Turk includes a new version of the API, 2006-05-05, with several new features, including HIT event notifications, multimedia content in HITs, and locale-based Qualification requirements.


Submitted By: Dan@AWS
Created On: June 13, 2006 9:15 PM GMT
Last Updated: June 14, 2006 3:35 PM GMT

Release Date: 2006-06-14
Latest WSDL/API Version: 2006-05-05

New Features

Feature Description
New API version The latest version of the Mechanical Turk Requester Service API is: 2006-05-05

To use the new API, make sure your application is specifying the API version in each request: SOAP users, upgrade your application to the latest WSDL. REST users, specify the Version parameter with a value of 2006-05-05 with each request, and use the latest schema. See the Developer Guide for more information.
HIT event notifications You can now ask to be notified about events regarding your HITs. When an event occurs, Mechanical Turk can send you a human-readable e-mail message, or it can attempt to contact your application directly with a web service request.

Mechanical Turk can send a notification when a Worker accepts a HIT; when a Worker submits, returns or abandons an assignment; when an assignment is approved automatically due to the auto-approval delay; when a HIT becomes "reviewable", or; when a HIT expires. You establish notifications on a HIT type, so all HITs of a type will use the notification specification you provide. You can create or update a notification specification using the SetHITTypeNotification operation.

You can test your notification receptor web service using the SendTestEventNotification operation.

See the Developer Guide for more information on how to build a notification receptor web service. See the Resource Center for sample code for building a notification receptor.
Include audio, video, Java applets and Flash movies in your HITs You can now include audio and video clips, Java applets, and Flash movies in your HITs. As with images, you host the media files yourself, then provide a URL to the resource when you create your HIT.
Locale Qualification requirements You can now restrict a HIT to Workers living in a particular country using a Qualification requirement. The locale Qualification requirement matches against the primary address provided by the Worker when the Worker's account was created.

Note: As part of this implementation, the Value parameter has been renamed IntegerValue in the Qualification requirement data structure and the GrantQualification, UpdateQualificationScore, and GetQualificationScore operations.
UTF-8 support Mechanical Turk now supports UTF-8 encoding of the Unicode character set for both question data and answer data. This makes it easier to include text in non-English languages in the question text, and accept text in non-English languages in answer fields.

Note: The maximum field lengths described by the documentation refer to the number of bytes that can be stored in each field. In UTF-8 encoding, many Unicode characters are stored as more than one byte.

(This feature was released prior to 2006-06-14.)

Known Issues

If you have any questions or information regarding a potential bug, please let us know using the "Contact Us" form on the Requester web site. Visit, select "FAQ" from the upper-right-hand corner, then select "Contact Us."

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