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Ask LexisNexis®

Learn how to use Ask LexisNexis as a knowledge source in Harvey

Last updated: Oct 10, 2025

Overview

Ask LexisNexis® enables you to get trusted AI-generated answers grounded in LexisNexis® U.S. primary law directly within Harvey. You can pose legal questions, receive citation-supported answers validated through Shepard’s® Citations, and refine your results through follow-up queries for greater depth or specificity.

When you Ask LexisNexis®, Harvey will surface answers from the LexisNexis Protégé™ Al assistant. Answer content includes:

  • Federal and state case law: Cite legal precedent to support your arguments.
  • Regulations and statutes: Get answers that directly reference up-to-date laws and regulations to supplement case law.
  • Shepard’s® Citations: A visual system from LexisNexis® that shows whether a case is still good law. It flags cases that have been overruled, criticized, or followed—so you know whether you can rely on them.

Use Ask LexisNexis® as a Knowledge Source

Note: LexisNexis® is a paid add-on feature within Harvey. You don’t need an existing LexisNexis® subscription to purchase it, and existing LexisNexis® customers must still buy the add-on separately to use it in Harvey. If you’re interested in piloting, please reach out to your Harvey Success team.

Once you have Ask LexisNexis in your workspace, follow the steps below to get started.

  1. Ask any query that implicates US case law, statutes, or regulations and Harvey will direct you to Ask LexisNexis® with pre-filled jurisdictions.
    Image of selecting lexisnexis as a knowledge source
  2. For more control over your jurisdictions, select the LexisNexis® knowledge source from the homepage.
    Image of selecting the LexisNexis Knowledge Source.
  3. Select content to search within, then click Add to save selections.
    1. Publication status of case law (required and pre-selected): Whether to include unpublished case law.
    2. Jurisdiction (optional): All content or up to three filters.
    3. Legal Classification (optional): Civil or criminal case law.
      Image of selecting additional content.

How to Review the Output

  • All sources in the output will display their applicable Shepard’s Signals for immediate review.
    • You can reference this overview for descriptions of each signal.
    • Sources are grouped by content type—case law, statutes, and regulations.
  • Click a source to open the full material in LexisNexis®. You do not need to be signed in to view the source text, but you do need to be signed in to access active links and full case history.
Clicking a source will open the full LexisNexis article.
  • Hover over footnotes in the output to preview source content. Click anywhere in the preview to view the full text within LexisNexis®.
Hover over footnotes to open a preview.

Watch the video below for a full walkthrough of the steps above.

Example Queries

FAQs

Tip: Follow our Roadmap to discover upcoming features and enhancements related to LexisNexis®.

Ask LexisNexis®