{
 "name": "Crossref API",
 "slug": "crossref-api",
 "category": "open-data",
 "description": "Metadata and DOIs for scholarly publications, handy for citation lookups.",
 "url": "https://www.crossref.org/",
 "docs_url": "https://www.crossref.org/documentation/retrieve-metadata/rest-api/",
 "auth": "none",
 "pricing": "free",
 "http_status": 200,
 "last_checked_at": "2026-10-14",
 "status": "active",
 "category_name": "Open Data",
 "swarmnest_url": "https://swarmnest.ai/directory/open-data/crossref-api/"
}