Crossref REST API

API

Search scholarly metadata and resolve DOIs to publisher-deposited records

Price: Free public metadata API
Access: None; include contact information

Docs

About

Crossref's public REST API returns publisher-deposited scholarly metadata, including titles, authors, references, funders and licenses. Search works or resolve a Crossref DOI without signing up. Metadata completeness varies; access does not grant full-text rights.

What you can do with it

Look up a Crossref DOI's title, authors, publication date and publisher
Search scholarly works and filter their bibliographic metadata
Enrich research records with deposited references, funders and license metadata

Get started

Use the public works endpoint for search or DOI lookup
Identify your app and use mailto for the polite pool
Follow response rate limits and check deposited metadata

Example

curl -H "User-Agent: ResearchApp/1.0 (mailto:contact@example.com)" \
  "https://api.crossref.org/works/10.1128/mbio.01735-25?mailto=contact@example.com"

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: None