Librarybase is a collaborative card catalog project focused on organizing, refining, and distributing metadata. It aims to complement other knowledge and research resources, including Wikidata and OpenAlex, by providing a shared catalog of information. The project operates as a community wiki, where users can explore existing entries and contribute new items and properties.

Its website includes tools for searching, browsing recent changes, and viewing links between pages, supporting collaborative development of the catalog. Librarybase also publishes guidance on its principles, scope, and consensus process, explaining the project’s motivations, what material is eligible for inclusion, and how community decisions are made. The site is part of the wider Wikibase network and provides access to related resources such as Wikibase World and Miraheze Communities.

Librarybase presents itself as an evolving, community-maintained metadata resource rather than a commercial product or service, inviting contributors to help build and improve a structured catalog for shared use