Crossref
www.crossref.orgThe REST API provides access to scholarly metadata and supports the open access metadata community.
What your agent can do
supports open access to scholarly metadata
Via API.
Resolve bibliographic references and retrieve DOI metadata in Crossref XML formats.
Via API.
Resolve an OpenURL citation to a DOI or retrieve DOI metadata.
Via API.
Tasks depend on the interface and permissions.
Connection methods
Choose a route that fits your agent.
API
For custom integrations
no account or key
1 of 4 paths checkedView paths for APIAPI connection
Resolve bibliographic references and retrieve DOI metadata in Crossref XML formats.
API path
https://doi.crossref.org/servlet/queryResolve an OpenURL citation to a DOI or retrieve DOI metadata.
API path
https://doi.crossref.org/openurl- Authentication
- No sign-in required.
Harvest Crossref journal, book, and series metadata using OAI-PMH.
API path
https://oai.crossref.org/oaisupports open access to scholarly metadata
API path
https://api.crossref.org/v1/works- Authentication
- No sign-in required.
View sources and checks
- API · Resolve bibliographic references and retrieve DOI metadata in Crossref XML formats.
- API · Resolve an OpenURL citation to a DOI or retrieve DOI metadata.
- API · Harvest Crossref journal, book, and series metadata using OAI-PMH.
- API · supports open access to scholarly metadataChecked 13 Oct 2026