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Amazon Mechanical Turk is a web service that enables you to post short or long-term work for people to do and receive the work from those people using the Internet. Amazon Mechanical Turk is optimized for work that people can do better than computers, for example, recognizing objects in photos.
This is the Amazon Mechanical Turk Developer Guide. This section describes who should read this guide, how the guide is organized, and other resources related to Amazon Mechanical Turk.
Amazon Web Services is sometimes referred to in this guide as AWS. All copyrights and legal protections still apply.
For a description of what's new in this release of the Amazon Mechanical Turk service, see What's New.
This guide serves the following audiences:
Developers who want to access the Amazon Mechanical Turk web service using the Amazon Mechanical Turk SDKs to write a script or a software application
Business analysts who do not want to write software, but who can use the Amazon Mechanical Turk command line interface to access the Amazon Mechanical Turk web service
Both audiences share the desire to use an on-demand workforce to accomplish jobs using Amazon Mechanical Turk.
For developers, use of this guide assumes you are familiar with the following:
XML (go to the W3 Schools XML Tutorial)
Basic understanding of web services (go to the W3 Schools Web Services Tutorial)
A programming language for consuming a web service and any related tools
All readers should have read the Amazon Mechanical Turk Getting Started Guide, which includes a high-level introduction, instructions on how to sign up to use Amazon Mechanical Turk, and a tutorial.
The online version of this guide provides a link that enables you to enter feedback about this guide.

We strive to make our guides as complete, error free, and easy to read as possible. You can help by giving us feedback. Thank you in advance!
This guide is organized into several major sections described in following the table.
| Information | Relevant Sections |
|---|---|
|
What's new in this release. | |
|
Basic concepts | |
|
Requesters and Workers | |
|
Tasks (HITs) Requesters make available to Workers | |
|
Worker Assignments | |
|
Worker Qualifications | |
|
Requester Notifications |
Each section is written to stand on its own, so you can look up the information you need and go back to work. However, you can also read through the major sections sequentially to get in-depth knowledge about the Amazon Mechanical Turk.
The table below lists related resources that you'll find useful as you work with this service.
| Resource | Description |
|---|---|
|
The Getting Started Guide provides a quick tutorial of the service based on a simple use case. Examples and instructions for C#, Java, Perl, Ruby and the Command Line Tools are included. | |
|
The API Reference describes the operations you can use to execute Amazon Mechanical Turk functionality. | |
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The Command Line Tools Reference describes the commands you can use to execute Amazon Mechanical Turk functionality. | |
|
The FAQ covers the top 20 questions developers have asked about this product. | |
|
The Release Notes give a high-level overview of the current release. They specifically note any new features, corrections, and known issues. | |
|
A central starting point to find documentation, code samples, release notes, and other information to help you build innovative applications with AWS. | |
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A community-based forum for developers to discuss technical questions related to Amazon Web Services. | |
|
The home page for AWS Technical Support, including access to our Developer Forums, Technical FAQs, Service Status page, and Premium Support. | |
| The primary web page for information about Amazon Mechanical Turk. | |
| A central contact point for inquiries concerning AWS billing, account, events, abuse etc. | |
| Detailed information about the copyright and trademark usage at Amazon.com and other topics. |