Searching DOI metadata

Both Datacite and Crossref have simple REST-like search endpoints.

Datacite Search

The DataCite search is at http://search.datacite.org.

The DataCite search API is at api is based on SOLR and can be found at http://api.datacite.org/

An example search that returns JSON

Crossref search

The crossref search is at http://search.crossref.org. The CrossRef search API can be found at http://api.crossref.org

An example search that returns JSON

External documentation

Datacite search API documentation
Crossref search API documentation