The Caselaw Access Project API, serves all official US court cases published in books from 1658 to 2018. This includes over six million cases scanned from the Harvard Law Library shelves. The API is primarily intended for software developers to access Caselaw programmatically, to run your own analysis or build tools for other users, however CAPAPI also includes an in-browser API viewer. API results are in JSON format with case text available as structured XML, presentation HTML, or plain text. Caselaw Access Project is operated by the President and Fellows of Harvard College to educate and disseminate knowledge and information.