May 18, 2022

Research Tools: Caselaw Access Project Launches “CAP Search” Interface

From the Harvard Law School Library Innovation Laboratory Blog:

Today we’re launching CAP search, a new interface to search data made available as part of the Caselaw Access Project API. Since releasing the CAP API in Fall 2018, this is our first try at creating a more human-friendly way to start working with this data.

CAP search supports access to 6.7 million cases from 1658 through June 2018, digitized from the collections at the Harvard Law School Library. Learn more about CAP search and limitations.

We’re also excited to share a new way to view cases, formatted in HTML. Here’s a sample!


The Caselaw Access Project was created by the Harvard Library Innovation Lab at the Harvard Law School Libraryin collaboration with project partner Ravel Law.

Direct to CAP Search


Caselaw Access Project Announces Official Launch, Free Public Access to 6.4M+ State and Federal Court Decisions (October 29, 2018)

Continued Support for Harvard Law’s Caselaw Access Project After Project Partner Acquired by LexisNexis (June 8, 2017)

Caselaw Access Project Scanning Now Complete (January 30, 2017)

Harvard Law School Library Project to Provide Free Online Access to U.S. State, Federal Court Decisions Named “Caselaw Access Project” (August 10, 2016)

 40 Million Pages: NY Times Reports on the Harvard Law School Library’s “Free the Law” Digitization Project (October 29, 2015)

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.