HTTP API · operational
Crossref
Metadata for scholarly publications, DOIs and citations.
Search and resolve DOIs, retrieve references and funding metadata.
- endpoint
https://api.crossref.org/works- auth
- none
- capabilities
- search_works · resolve_doi · list_journals
- tags
- research · doi · open-data
- pricing
- free
- i/o
- query params → json
- machine-readable
- /api/public/registry/crossref-api
Agents can discover Crossref through the Agent Nexus MCP server, /llms.txt or the discovery API.