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	1824	21 April 2020
UNIXREF XML API inserting incorrect whitespace between HTML-like elements Interfaces for Machines metadata-retrieval , xml_api	4	60	19 March 2026
2026 public data file now available - Crossref Metadata Retrieval metadata , community , blog , metadata-retrieval , api	1	21	17 March 2026
Improving our reference matching strategy to reduce incorrect citation links Metadata Retrieval references , reference-matching , relationships , metadata-matching	0	451	10 March 2026
Missing reciprocal relationships are being added back in Metadata Retrieval rest-api , relationships	0	22	27 February 2026
REST API pools: Which to use and when? Interfaces for Machines rest-api , community , metadata-retrieval , metadata_plus , best-practice	0	43	23 February 2026
Date types in the REST API Interfaces for Machines rest-api	0	42	16 January 2026
Updates to REST API documentation Metadata Retrieval rest-api , documentation	0	65	18 December 2025
Questions Regarding Japanese Content and the language Field in REST API Metadata Retrieval rest-api , metadata-retrieval , xml_support , multilingual , journal	5	93	8 December 2025
Updates to REST API rate limits Interfaces for Machines rest-api , metadata-retrieval	0	82	2 December 2025
JATS elements in abstract (Is this the expected behaviour?) Metadata Retrieval metadata-retrieval , abstracts , jats	8	213	26 November 2025
Piecing together the Research Nexus: uncovering relationships with open funding metadata - Crossref Metadata Retrieval community , blog , funding , metadata-matching	2	72	28 October 2025
Meaningful whitespace removed from JSON REST API Metadata Retrieval rest-api , metadata-retrieval	1	39	30 September 2025
A way, per DOI, to get original metadata deposit XML? Interfaces for Machines rest-api , metadata-retrieval	6	55	29 September 2025
Upgrade to REST API Elasticsearch Metadata Retrieval rest-api , metadata-retrieval	1	53	22 September 2025
Any websites that display abstract from metadata service? Metadata Retrieval metadata-retrieval , abstracts	2	49	12 September 2025
Authenticated-orcid Interfaces for Machines orcid , rest-api , metadata-retrieval	1	167	2 September 2025
What's going on with the REST API? Indexing issues Interfaces for Machines rest-api , bug	0	195	20 August 2025
Invalid CSL-JSON record types Interfaces for Machines rest-api , bug , metadata-retrieval , content_type_advice	1	27	19 August 2025
Fetching reindexed works Metadata Retrieval rest-api , bug , metadata-retrieval , xml_api	9	47	18 August 2025
OAI-PMH - preprints and incremental updates Metadata Retrieval cited-by , oai-pmh , metadata-retrieval	1	39	15 August 2025
Publication types for citations in updates for schema 5.4 Metadata Retrieval rest-api , schema , content-registration , metadata-retrieval	5	102	4 July 2025
Sprinting to Progress: Behind the scenes of our first metadata sprint - Crossref Metadata Retrieval community , blog , metadata-retrieval , research-nexus	1	47	23 June 2025
Evolving the preprint evaluation world with Sciety Metadata Retrieval blog , api , case-study , api-case-study	1	35	18 June 2025
DOI number not shown in google scholar, please guide Interfaces for People rest-api , metadata-retrieval , google	2	72	8 June 2025
Query the REST API with hour / minute / second resolution Metadata Retrieval rest-api , metadata-retrieval , metadata_plus	0	130	21 May 2025
Search by ORCiD - incomplete results Interfaces for Machines orcid , rest-api , metadata-retrieval , metadata-search	2	81	16 May 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	144	7 May 2025
A new dataset of relationships involving research organisations Metadata Retrieval research-nexus , metadata-matching , data-science	0	329	28 April 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	130	9 April 2025