Metadata Retrieval

Interfaces for People To retrieve metadata from Crossref, you do not need to be a member. We have various options for retrieving metadata - some are more suitable for human use, and some for machine use. Interfaces for Machines There are APIs for machines (to look up metadata records or DOIs in volume), including: REST API, XML API, OAI-PMH, and OpenURL.

Topic	Replies	Views	Activity
About the Metadata Retrieval category Metadata Retrieval	0	1815	April 21, 2020
Date types in the REST API Interfaces for Machines rest-api	0	10	January 16, 2026
Updates to REST API documentation Metadata Retrieval rest-api , documentation	0	31	December 18, 2025
Questions Regarding Japanese Content and the language Field in REST API Metadata Retrieval rest-api , metadata-retrieval , xml_support , multilingual , journal	5	66	December 8, 2025
Updates to REST API rate limits Interfaces for Machines rest-api , metadata-retrieval	0	49	December 2, 2025
JATS elements in abstract (Is this the expected behaviour?) Metadata Retrieval metadata-retrieval , abstracts , jats	8	195	November 26, 2025
Piecing together the Research Nexus: uncovering relationships with open funding metadata - Crossref Metadata Retrieval community , blog , funding , metadata-matching	2	67	October 28, 2025
UNIXREF XML API inserting incorrect whitespace between HTML-like elements Interfaces for Machines metadata-retrieval , xml_api	3	50	October 1, 2025
Meaningful whitespace removed from JSON REST API Metadata Retrieval rest-api , metadata-retrieval	1	33	September 30, 2025
A way, per DOI, to get original metadata deposit XML? Interfaces for Machines rest-api , metadata-retrieval	6	48	September 29, 2025
Upgrade to REST API Elasticsearch Metadata Retrieval rest-api , metadata-retrieval	1	36	September 22, 2025
Any websites that display abstract from metadata service? Metadata Retrieval metadata-retrieval , abstracts	2	41	September 12, 2025
Authenticated-orcid Interfaces for Machines orcid , rest-api , metadata-retrieval	1	120	September 2, 2025
What's going on with the REST API? Indexing issues Interfaces for Machines rest-api , bug	0	189	August 20, 2025
Invalid CSL-JSON record types Interfaces for Machines rest-api , bug , metadata-retrieval , content_type_advice	1	23	August 19, 2025
Fetching reindexed works Metadata Retrieval rest-api , bug , metadata-retrieval , xml_api	9	43	August 18, 2025
OAI-PMH - preprints and incremental updates Metadata Retrieval cited-by , oai-pmh , metadata-retrieval	1	33	August 15, 2025
Publication types for citations in updates for schema 5.4 Metadata Retrieval rest-api , schema , content-registration , metadata-retrieval	5	98	July 4, 2025
Sprinting to Progress: Behind the scenes of our first metadata sprint - Crossref Metadata Retrieval community , blog , metadata-retrieval , research-nexus	1	46	June 23, 2025
Evolving the preprint evaluation world with Sciety Metadata Retrieval blog , api , case-study , api-case-study	1	25	June 18, 2025
DOI number not shown in google scholar, please guide Interfaces for People rest-api , metadata-retrieval , google	2	59	June 8, 2025
Query the REST API with hour / minute / second resolution Metadata Retrieval rest-api , metadata-retrieval , metadata_plus	0	128	May 21, 2025
Search by ORCiD - incomplete results Interfaces for Machines orcid , rest-api , metadata-retrieval , metadata-search	2	76	May 16, 2025
Ticket of the month - April 2025 - ¿Cómo hacer consultas en la REST API de Crossref? Metadata Retrieval rest-api , metadata-retrieval , ticket_of_month	0	134	May 7, 2025
A new dataset of relationships involving research organisations Metadata Retrieval research-nexus , metadata-matching , data-science	0	320	April 28, 2025
Ticket of the month - March 2025 - How do I get a list of DOIs registered for a journal, book, or conference? Interfaces for People rest-api , depositor-report , metadata-retrieval , ticket_of_month	0	120	April 9, 2025
New version of the dataset of relationships between preprints and journal articles Metadata Retrieval preprints , metadata-matching , data-science	0	160	April 3, 2025
Querying citations via API Metadata Retrieval cited-by , xml_api	7	199	March 26, 2025
Maximum value counts for facet queries in the REST API Metadata Retrieval rest-api	0	71	March 26, 2025
Retraction Watch retractions now in the Crossref API - Crossref Metadata Retrieval rest-api , blog , retractions , research-integrity , retraction_watch	7	271	March 25, 2025