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worldcat-search-api

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Search the world's largest library catalog via OCLC WorldCat API

skills/literature/search/worldcat-search-api/SKILL.md

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# WorldCat Search API

## Overview

WorldCat is the world's largest network of library content, aggregating catalogs from 10,000+ libraries across 170+ countries. The Search API provides access to 500M+ bibliographic records — books, journals, dissertations, media, and more — with holdings information showing which libraries own each item. Essential for interlibrary loan discovery, collection analysis, and comprehensive bibliographic searches. Requires a WSKey (free for non-commercial use).

## Authentication

```bash
# Register at https://platform.worldcat.org/
# Obtain a WSKey (API key) for your application

# OAuth 2.0 client credentials flow
curl -X POST "https://oauth.oclc.org/token" \
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