Structured data
MCP
Apify
Access reusable web data workflows.
Free tier
Crossref REST API
Resolve scholarly metadata and DOIs.
THE OVERVIEW
What you can build with it.
Query scholarly publication metadata, including works, publishers and funders. Useful for citation lookup and research enrichment.
Look up DOI metadata
Search scholarly works
Retrieve publisher metadata
A CLEARER NEXT STEP
Your connection guide.
Documentation reviewedConnection not tested by ToolSkipperTask outcome not independently tested
Reviewed 13 October 2026. Choose the connection that fits your agent host. Provider instructions and limits may change.
Public scholarly metadata REST APIREST · https
Provider endpoint
https://api.crossref.orgAuthentication · optional
No sign-up or API key is required for public REST metadata access.
Crossref public REST metadata APIUse /works for registered scholarly records or /works/{doi} for a DOI record.
Crossref public REST metadata APIProvide mailto when using the provider’s polite pool and follow current usage guidance.
Crossref public REST metadata API
Allowances and costs
Public metadata access is free; this option does not cover Metadata Plus.
Free access: No sign-up is required for the public REST API.
- Follow provider usage guidance.
What still needs checking
- Metadata availability is not a licence to obtain or reuse the underlying full publication.
- Some abstracts can remain subject to copyright.
- Documentation reviewed only; no provider account was connected and no operation or payment was executed.
Catalogue snapshot.
The listing below retains its original source evidence. The connection guide above separately documents provider options and their review date.
Listed interfacesREST
Listed authenticationNo authentication documented
Pricing modelFree
Primary categoryStructured data
Documented endpoint
https://api.crossref.orgCheck the provider’s setup instructions and authentication requirements before connecting.Know where it comes from.
This record is based on the provider’s published documentation. Source retrieval is distinct from a successful service test.
Evidence levelProvider documented
Source checked10 October 2026
SourceView provider source
Public metadata access is documented. Respect rate limits and the provider's recommended polite usage. Records are not a full-text paper licence.