Welcome to the LexisNexis® Web Services Kit
Through the Internet, you are presented with both the opportunities and challenges of doing business in a global marketplace. Your clients may be located on the other side of the city, the country, or the world. They keep asking for newer and better products and services faster and at a lower cost. And, you may be continuously feeling competitive pressure for their business from a variety of sources. This is not the playground for the timid or the uninformed. If your organization is determined to meet these market challenges head on, the LexisNexis® Research Services have a massive and varied collection of both the current and historical information to help you do it.
LexisNexis is one of the world's leading and most respected providers of online research services. The LexisNexis information warehouse contains millions of documents dating back many years and covering a multitude of topics. Using advanced communications channels that reach out to thousands of our information providers around the world, new documents can be available online before, as, or very shortly after they are published. This gives you instant access to both the most current and historical information related to news, legal, business, financial, political, industrial, and many other topics.
With the flexibility offered by the LexisNexis Web Services Kit, you have control over this vital resource. You can create custom research utilities and embed them in your system where they are needed. Arrangements can even be made download documents in bulk and store them on your local server so that the information you need is always close at hand and can be used in unique ways. This flexibility lets you quickly retrieve the information you need when you need it and deliver it in the fashion and at the locations of your choosing.
About the LexisNexis Web Services Kit

The Internet has become the standard global communications network permitting real-time information exchanges with other Internet users around the world. Many organizations are also developing sophisticated Intranet networks to instantly connect their employees to each other and the rest of the world. These organizations have found that the ability of their people to quickly get the information they need for their job is the edge that keeps their organization on the leading edge.
To help people get the right information right now, LexisNexis offers a variety of powerful online research applications. Although these applications can satisfy most organizations' online research needs, some organizations may have additional needs that are somewhat unique. For example, they may want to create smaller online research gadgets that can be incorporated into their Intranet network or that assist in their user's workflow such as by providing one-click retrieval of the most current information on a given topic. And they want the flexibility of styling and manipulating information that has been marked up in XML.
To support their internal systems and interaction with the Internet, many organizations have their own staff of very talented Web developers or have access to companies that specialize in developing Web Services applications. Given the right tools, these developers can make almost any software application idea a reality. As for providing customized online research capabilities, we feel the LexisNexis Web Services Kit offers the right tools. We designed the Web Services Kit API (Application Programming Interface) to allow developers to incorporate many of our most popular research capabilities into one or more online research applications with minimal coding effort.
With the LexisNexis Web Services Kit, you control those portions of the process that interact directly with your users. For example, you'll design the mechanism your users will use to request information. You'll then package that request in a message to the Web Services Kit server. Your request will be processed immediately and you'll be sent a response message containing the XML documents or other information you requested. Finally you'll use the flexibility of XML to style those documents and present them to your users. And by using a Web Services development tool that supports the Web Service Description Language (WSDL), you can use the provided WSDL files to build valid message structures and even handle the message exchanges between your system and LexisNexis.
Developing Your Online Research Applications
Each customer implementation of the LexisNexis Web Services Kit is unique. Therefore, to ensure that your implementation is successful, it will be treated as a LexisNexis project. A project team will be formed to help guide your online research applications through the following four phases of the project:
- Discovery -- Meetings are held to fully understand your specific needs and match them to the capabilities provided by the Web Services Kit.
- Validation -- Support is provided to your team as they develop and test your applications.
- Compliance -- Your finished online research applications are reviewed for items such as LexisNexis branding, system usage efficiency, and search effectiveness.
- Rollout -- IDs and any other information needed to permit your applications to access the Web Services Kit production server are provided.
The Implementation Process page describes this process in more detail. It outlines the entry and exit criteria for each of the phases as well as the events that will take place during those phases. In addition, this page describes the Web Services Kit Data Hosting feature that lets you host some frequently used LexisNexis Documents on your local server. Due to the agreements we have with our information providers, there are some restrictions we must enforce. This page describes those restrictions.
About the Secured Developer's Area
Most of the work of analyzing your requests, verifying authorizations, retrieving the appropriate information, and packaging the response is performed deep within the LexisNexis system. However, some information provided here is still considered a potential security risk in the hands of unauthorized individuals. Therefore you will notice that the first time you attempt to access the secured areas of this site, you will be required to enter a special ID and password. If you haven't been provided with them already, please contact your LexisNexis Account Representative or your Technical Assistant at LexisNexis.
The following types of information are covered in this secured developer's area:
- Getting Started - Some people in your organization may not be familiar with the concept of online research. Therefore, this page provides some general information about online research with the LexisNexis Research Services and the LexisNexis Web Services Kit. It also describes the typical interaction that takes place between a user and the LexisNexis Research Services when performing online research and describes how you can use the various capabilities of the Web Services Kit in your online research application designs to meet your user's research needs.
In addition, this page describes this site's built-in special Test Application that helps your developers visualize the interaction that occurs between a client server and the Web Services Kit host server. This application consists of a series of links (shown in the navigation panel on the left). Several links display a form that can be filled in to create a request for service. The application then displays the request message that is issued, the response message that is returned, and other useful information.
- WSDL Files - New Web Services technologies that help developers build applications that can interact efficiently over the Internet are continuously being introduced. One of the most accepted technologies is the use of a standardized Web Service Description Language (WSDL). A WSDL file, which is provided by the host service, is actually an XML document that many Web Services development tools can use as an input. This file describes several of the host Web service's specifications and requirements in a machine-readable format. Your Web Services tool can use this information to validate much of your code and build message structures, as well as to automatically handle the message exchanges between the host service and your client application.
This page talks about the WSDL files, how to get the ones you need to connect your online research applications to the appropriate development, test, and production Web Services Kit servers. This page also describes how to set up two popular Web Services tool kits (Apache Axis for Java (both versions 1.0 and 1.1 are supported) and Microsoft Visual Studio .NET) for use with the Web Services Kit WSDL files. To significantly reduce your programming workload, we strongly recommend that you use either of these Web Services tool kits or a toolkit of your choosing that supports WSDL files.
- Developer's Guide - After reviewing the above pages, you should be ready to think about designing and implementing your applications. Therefore, this page provides links to a series of other pages that describe the various functions (called operations) supported by the Web Services Kit. Each operation description contains information about its use and describes the elements (tag sets) that can be included in a request input message and those that may be present in the corresponding response output message.
This page also provides a quick reference summary of all the various operation's message formats and parameters. You can print this quick reference document and keep it handy while developing your online research applications.
- LexisNexis Branding - There are some additional things that need to be taken into consideration when developing your online research applications. For example, we require that the use of LexisNexis Research Services be acknowledged according to specific guidelines. And, there are also other legal issues that must be considered. These include the display of copyright notices and access to a collection of terms and conditions that govern how the retrieved documents can be used. Therefore, these pages give you information about these types of design issues.
- Fault Reporting - This page lists the various fault codes and messages that you might encounter when interacting with the Web Services Kit. It also provides a link to an online version of the listing that your applications can use to generation actions or display appropriate messages to your users.
- Document Encoding Formats - The Web Services Kit currently supports both versions 2.5 and 3.0 of the semantic News Interchange Text Format (NITF) markup and a proprietary semantic markup for some legal content with more to be added in future releases. Documents can also be retrieved in the XHTML format to allow for display with minimal manipulation. This page describes these formats and provides links to sites containing additional information about them.
- Glossary of Terms - Most terms are commonly used within the Web Services community. However, there are some terms that you may encounter, specifically related to the LexisNexis Research Services that are unique. This glossary defines those and other terms you might encounter within this site.
Specification Summary
Web Services Interface
- All requests are HTTP POST
- SOAP (Simple Object Access Protocol) messaging protocol (Version 1.1)
- WSDL file v1.1 (Web Services Description Language)
Data Format
- All content is available in XHTML format.
- News content (& others) available in NITF v3.0 & v2.5 format (News Industry Text Format)
- A proprietary semantic markup for some legal content
Web Services Toolkits Compliant
- Apache Axis for Java (versions 1.0, 1.1, and 1.4 are supported)
- Microsoft Visual Studio .NET
So when your ready, dig out your special ID and password, click one of the links in the navigation area on the left, and together we'll get started.
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