Worldcat Plans Pricing
OCLC WorldCat APIs are available to OCLC member libraries through subscription plans. Access is tied to existing OCLC service subscriptions rather than standalone API pricing tiers. Commercial partnerships are available for non-library organizations.
Worldcat Plans Pricing is the machine-readable pricing-plan profile for WorldCat on the APIs.io network, conforming to the API Commons Plans specification.
It defines 4 plans, covering subscription and commercial tiers, with named plans including WorldCat Cataloging and Metadata Subscription, WorldCat Knowledge Base Subscription, WorldCat Meridian Subscription (Entities), Commercial Partnership.
Tagged areas include Libraries, Bibliographic Records, WorldCat, OCLC, and Cataloging.
Plans
Required subscription for libraries accessing the WorldCat Search API v2 and WorldCat Metadata API. Libraries with a full cataloging subscription gain access to search, retrieve, and maintain bibliographic and holdings data in WorldCat. Both a Cataloging and Metadata subscription and a FirstSearch/WorldCat Discovery subscription are required for full Search API access.
Required subscription for libraries using OCLC WorldCat Knowledge Base services. Provides access to the Knowledge Base API for managing and accessing e-resource subscription data, OpenURL linking, and browsing library subscription resources.
Required subscription for libraries accessing WorldCat Entities APIs. Available to OCLC Meridian subscribers, enabling creation, management, and analysis of linked data through Entity Management, Entity Search, Entity Query, and related tools.
OCLC offers commercial partnerships for non-library organizations that wish to integrate WorldCat data and APIs into commercial products and services. Pricing and terms are negotiated individually based on use case and volume requirements.
Work with this as data
Every plan here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for plans
4 MCP tools reach this
find_plansBrowse and filter every plan in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/plans/worldcat-plans-pricing"curl "https://apis.io/api/v1/plans?limit=25"Discovery needs no key. Ratings and market analysis are Pro.