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Revision 102 by AgentSapphire September 30, 2026
Revision 107 by raybb October 3, 2026
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0 ## Getting Started 0 ## Getting Started
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8 8
9 Try the interactive Open API Sandbox: 9 Try the interactive [OpenAPI Documentation](https://openlibrary.org/docs).
10 [OpenAPI Sandbox](https://openlibrary.org/swagger/docs) 10
11 ## Registering Your Application
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13 Please use [**this link**](https://docs.google.com/forms/d/1119CgdEWHtaAy2lOpUmtbe4S-w6xhJUin-nqP7Bl1XQ/edit) to register your use-case or application. This information helps our team understand how Open Library's APIs are being used and maintain and improve our services to meet the community's diverse needs.
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17 17
18 - Open-source and mission-aligned projects 21 - Open-source and mission-aligned projects (like Wikidata & Wikipedia)
19 - Library and education tools 22 - Library & metadata partners
20 - Human-facing discovery and lookup services 23 - Research, learning, & education tools
21 - Real-time, low-volume, high-value use 24    - Book tools & services that facilitate lookup for humans
22 22
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32 32
33 - Scrape HTML pages (use API endpoints instead) 36 - Scrape HTML pages (use API endpoints instead) or harvest HTML in bulk
34 - Distribute traffic across 5+ IPs 37 - Distribute requests across multiple IPs
35 - Harvest data in bulk 38    - Make hundreds of single-book requests (use search.json for batch results)
36 - Make hundreds of single-book requests (use search.json for batch results) 39 - Use Open Library as a backend for high-traffic commercial services
37 - Use Open Library as a backend for high-traffic services
38 38
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61 61
62 **Please do not use our APIs for bulk download** of Open Library data because this affects our ability to serve patrons. We make our data [publicly available](https://openlibrary.org/developers/dumps) each month for partners. If you want a dump of complete data, please read about our [Bulk Download](/data#downloads) options, or email us at [openlibrary@archive.org](mailto:openlibrary@archive.org). 64 We make our data [publicly available](https://openlibrary.org/developers/dumps) each month for partners. If you want a dump of complete data, please visit our [Bulk Download](/data#downloads) options, or email us at [openlibrary@archive.org](mailto:openlibrary@archive.org).
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66 Please **do not** use our APIs to bulk download metadata because this impacts our ability to serve patrons.
63 63
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95  Trove is a new discovery experience focused on Australia and Australians. It supplements what search engines provide with reliable information from Australia's memory institutions. The system hits Open Library when public domain books turn up in searches, and displays links to Open Library. 95  Trove is a new discovery experience focused on Australia and Australians. It supplements what search engines provide with reliable information from Australia's memory institutions. The system hits Open Library when public domain books turn up in searches, and displays links to Open Library.
96        - [**Koha**](https://koha-community.org/) 100    - [**Koha**](https://koha-community.org/)
97  Koha is an open source library system for public libraries that includes catalog searches and member organizing. It uses Open Library covers, displays OL related subjects, and lendable eBooks using the Read API. 101    Koha is an open source library system for public libraries that includes catalog searches and member organizing. It uses Open Library covers, displays OL related subjects, and lendable eBooks using the Read API.
98        - [**Evergreen**](https://evergreen-ils.org) 102    - [**Evergreen**](https://evergreen-ils.org)
99  Evergreen is highly-scalable software for libraries that helps library patrons find library materials, and helps libraries manage, catalog, and circulate those materials. It uses Open Library for covers, tables of contents, with plans to expand into other areas. 103    Evergreen is highly-scalable software for libraries that helps library patrons find library materials, and helps libraries manage, catalog, and circulate those materials. It uses Open Library for covers, tables of contents, with plans to expand into other areas.
100        - [**read.gov**](https://read.gov/books/) by *the Library of Congress* 104    - [**read.gov**](https://read.gov/books/) by *the Library of Congress*
101  OK, this isn't exactly Open Library, but it's still awesome! The Library of Congress have modified the Internet Archive's Book Reader to sit perfectly within their Rare Books Collection site. 105    OK, this isn't exactly Open Library, but it's still awesome! The Library of Congress have modified the Internet Archive's Book Reader to sit perfectly within their Rare Books Collection site.
102        - [**OpenBook WordPress Plug-in**](https://code.google.com/p/openbook4wordpress/) by *John Miedema* 106    - [**OpenBook WordPress Plug-in**](https://code.google.com/p/openbook4wordpress/) by *John Miedema*
103  OpenBook is useful for anyone who wants to add book covers and other book data on a WordPress website. OpenBook links to detailed book information in Open Library, the main data source, as well as other book sites. Users have complete control over the display through templates. OpenBook can link to library records by configuring an OpenURL resolver or through a [WorldCat](https://www.worldcat.org/) link. OpenBook inserts [COinS](https://ocoins.info/) so that other applications like [Zotero](https://www.zotero.org/) can pick up the book data. 107    OpenBook is useful for anyone who wants to add book covers and other book data on a WordPress website. OpenBook links to detailed book information in Open Library, the main data source, as well as other book sites. Users have complete control over the display through templates. OpenBook can link to library records by configuring an OpenURL resolver or through a [WorldCat](https://www.worldcat.org/) link. OpenBook inserts [COinS](https://ocoins.info/) so that other applications like [Zotero](https://www.zotero.org/) can pick up the book data.
104        - [**Umlaut**](https://wiki.code4lib.org/index.php/Umlaut) by *Jason Ronallo* 108    - [**Umlaut**](https://wiki.code4lib.org/index.php/Umlaut) by *Jason Ronallo*
105  Umlaut is a middle-tier OpenURL link resolver that adds functions and services to commercial link resolving software. 109    Umlaut is a middle-tier OpenURL link resolver that adds functions and services to commercial link resolving software.
106        - [**Virtual Shelf**](https://www.ischool.berkeley.edu/projects/2009/virtual-shelf) by *Jonathan Breitbart and Devin Blong* (UC Berkeley School of Information) 110    - [**Virtual Shelf**](https://www.ischool.berkeley.edu/projects/2009/virtual-shelf) by *Jonathan Breitbart and Devin Blong* (UC Berkeley School of Information)
107  The Virtual Shelf is a visualization created by two students at the UC Berkeley School of Information. The project includes the student's master thesis, with research into the searching and browsing patterns of library patrons. The Open Library RESTful API was utilized during the project as a source of metadata for the user interface. 111    The Virtual Shelf is a visualization created by two students at the UC Berkeley School of Information. The project includes the student's master thesis, with research into the searching and browsing patterns of library patrons. The Open Library RESTful API was utilized during the project as a source of metadata for the user interface.
108        - [**RDC UI Toolkit**](https://ruraldesigncollective.org/lab/ui) by *Rural Design Collective* 112    - [**RDC UI Toolkit**](https://ruraldesigncollective.org/lab/ui) by *Rural Design Collective*
109  This group created a suite of tools that facilitates the creation of localized user interfaces for public domain books. The RDC used the Open Library Covers API and the Internet Archive Book Reader in their online demonstration customized for the OLPC XO. 113    This group created a suite of tools that facilitates the creation of localized user interfaces for public domain books. The RDC used the Open Library Covers API and the Internet Archive Book Reader in their online demonstration customized for the OLPC XO.
110        - [**Dreambooks.club**](https://www.dreambooks.club) by *Bernat Fortet* 114    - [**Dreambooks.club**](https://www.dreambooks.club) by *Bernat Fortet*
111  Dreambooks is a portal and community where parents and children can discover new books to read together. Think of it as the online equivalent of your library's children's corner. All the book data is powered by OpenLibary's API. 115    Dreambooks is a portal and community where parents and children can discover new books to read together. Think of it as the online equivalent of your library's children's corner. All the book data is powered by OpenLibary's API.
112        - [**MyBooks.Life**](https://mybooks.life) by *Mark Webster* 116    - [**MyBooks.Life**](https://mybooks.life) by *Mark Webster*
113  MyBooks.Life is an android app and website designed primarily to manage TBR (to-be-read) lists. You can keep track of your reading progress, make notes, manage your wishlist, and rate your books. MyBooks.Life uses Open Library data to power its search. 117    MyBooks.Life is an android app and website designed primarily to manage TBR (to-be-read) lists. You can keep track of your reading progress, make notes, manage your wishlist, and rate your books. MyBooks.Life uses Open Library data to power its search.
114        - [**Bookmind**](https://apps.apple.com/app/bookmind/id6593662584) 118    - [**Bookmind**](https://apps.apple.com/app/bookmind/id6593662584)
115  Bookmind is now available at <https://apps.apple.com/app/bookmind/id6593662584>. It uses open library’s api exclusively for book data. You can even see the rough prototype source at <https://github.com/dave-ruest/Bookmind>. 119    Bookmind is now available at <https://apps.apple.com/app/bookmind/id6593662584>. It uses open library’s api exclusively for book data. You can even see the rough prototype source at <https://github.com/dave-ruest/Bookmind>.
116        - [**Hobbyverse**](https://hobbyverse.app/) let's you track all your hobbies in one place. Users can add their books to their digital library and track their progress reading books, view what books their friends are reading, earn achievements, etc. 120    - [**Hobbyverse**](https://hobbyverse.app/) let's you track all your hobbies in one place. Users can add their books to their digital library and track their progress reading books, view what books their friends are reading, earn achievements, etc.
117        - [**ReadOtter**](https://readotter.com/) 121    - [**ReadOtter**](https://readotter.com/)
118  ReadOtter, a classroom library management app designed to help teachers organize their classroom libraries. 122    ReadOtter, a classroom library management app designed to help teachers organize their classroom libraries.
119        - [**Chapter**](https://www.clubchapter.com/) 123    - [**Chapter**](https://www.clubchapter.com/)
120  Chapter is an online reading library and reading organizer app. 124    Chapter is an online reading library and reading organizer app.
121        - [**Land of Readers**](https://www.landofreaders.com/) 125    - [**Land of Readers**](https://www.landofreaders.com/)
122  is a free, easy-to-use book discovery tool designed to help readers find books that match their interests, age group, and reading level. 126    is a free, easy-to-use book discovery tool designed to help readers find books that match their interests, age group, and reading level.
123        - [**Austen**](https://github.com/herol3oy/austen) 127    - [**Austen**](https://github.com/herol3oy/austen)
124  is a web app that uses the Open Library API to generate visual character relationship diagrams for books using AI. [Here](https://austen.vercel.app/) is a live demo of their work. 128    is a web app that uses the Open Library API to generate visual character relationship diagrams for books using AI. [Here](https://austen.page) is a live demo of their work.
125        - [**mcp-open-library**](https://github.com/8enSmith/mcp-open-library) by *Ben Smith* 129    - [**mcp-open-library**](https://github.com/8enSmith/mcp-open-library) by *Ben Smith*
126  A Model Context Protocol (MCP) server for the Open Library API that enables AI assistants to search for book and author information. The source code can be found [here](https://github.com/8enSmith/mcp-open-library). So far on a MCP server website its been called 5.2k times: <https://smithery.ai/server/@8enSmith/mcp-open-library>. It has also been published to npm: <https://www.npmjs.com/package/mcp-open-library>. 130    A Model Context Protocol (MCP) server for the Open Library API that enables AI assistants to search for book and author information. The source code can be found [here](https://github.com/8enSmith/mcp-open-library). So far on a MCP server website its been called 5.2k times: <https://smithery.ai/server/@8enSmith/mcp-open-library>. It has also been published to npm: <https://www.npmjs.com/package/mcp-open-library>.
127 - [**TheCoverVerse**](https://www.thecoververse.com/) 131 - [**TheCoverVerse**](https://www.thecoververse.com/)
128  is a book edition catalogue built around cover art, letting readers browse and compare editions of the same work side by side. It uses Open Library’s edition data and covers API to populate metadata and cover images : [https://www.thecoververse.com](https://www.thecoververse.com/) 132  is a book edition catalogue built around cover art, letting readers browse and compare editions of the same work side by side. It uses Open Library’s edition data and covers API to populate metadata and cover images : [https://www.thecoververse.com](https://www.thecoververse.com/)
129 133
130 Are you using the Open Library APIs? We'd love to hear about it! Please email us at [openlibrary@archive.org](mailto:openlibrary@archive.org). 134 Are you using the Open Library APIs? We'd love to hear about it! Please email us at [openlibrary@archive.org](mailto:openlibrary@archive.org).