This is the default version of the API, and it is recommended for new development.

• Basics
• Item Types/Fields
• Write Requests
• File Uploads
• Full-Text Content
• Syncing
• OAuth Authentication
• Changes from API Version 2

Please post questions regarding the Zotero API to the zotero-dev mailing list.

Known client libraries for the Zotero API (all versions) include:

• https://github.com/fcheslack/libZotero (PHP and Python)
• https://github.com/shazino/SZNZotero (Objective-C)
• https://github.com/urschrei/pyzotero (Python)
• https://github.com/clioweb/phpZotero (PHP, no longer maintained)
• https://github.com/scholarpress/scholarpress-workshop

The API‌ forms a fundamental part of several projects, including:

• The online library view at zotero.org, which is built using the same API‌
• Zotpress, a WordPress plugin for including citations to items in your Zotero library in blog posts. The plugin makes extensive use of the read API and implements both key-based and OAuth for access control.
• Biblio Bouts, an game where participants compete to collect high quality sources online. The game uses the API‌ to see what items participants have saved.
• phpZoteroWebDAV, a WebDAV implementation in PHP which allows users to sync their attachments to their own webservers, including an online library and attachment view building off the read API. (AGPL)
• Scanner for Zotero, Android app which saves items to Zotero libraries using the write API (Java, GPL-licensed)
• Zandy Android app using the read and write APIs to provide full access to Zotero libraries (Java, AGPL-licensed)
• ZotSpip, a SPIP plugin to synchronise a Zotero library with SPIP (a content management system). References can be presented in web pages and searched through a dedicated webpage. A complementary plugin (BiblioCheck) allows a research unit to manage corrections to apply to the unit bibliography. (PHP)
• BibBase A web service that makes it possible to embed a list of Zotero publications in a web page (e.g., for personal publications pages).
• Kerko A web application component for the Flask framework that synchronizes with a Zotero library to provide a user-friendly yet powerful search and browsing interface for an online bibliography. (Python, GPL-licensed)