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	1832	April 21, 2020
Updates to CSL reference styles Interfaces for Machines content_negotiation	9	64	April 23, 2026
Can Publishers Help Fix CrossRef Affiliations Metadata Issues? Metadata Retrieval rest-api , metadata-retrieval , metadata-quality , affiliation	1	33	April 17, 2026
2026 public data file now available - Crossref Metadata Retrieval community , blog , metadata-retrieval , public-data-file , api	7	95	March 31, 2026
Get and sync all Crossref metadata Interfaces for Machines rest-api , snapshots , public-data-file , best-practice	0	19	March 30, 2026
UNIXREF XML API inserting incorrect whitespace between HTML-like elements Interfaces for Machines metadata-retrieval , xml_api	4	76	March 19, 2026
Improving our reference matching strategy to reduce incorrect citation links Metadata Retrieval references , reference-matching , relationships , metadata-matching	0	518	March 10, 2026
Missing reciprocal relationships are being added back in Metadata Retrieval rest-api , relationships	0	29	February 27, 2026
REST API pools: Which to use and when? Interfaces for Machines rest-api , community , metadata-retrieval , metadata_plus , best-practice	0	76	February 23, 2026
Date types in the REST API Interfaces for Machines rest-api	0	61	January 16, 2026
Updates to REST API documentation Metadata Retrieval rest-api , documentation	0	69	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	96	December 8, 2025
Updates to REST API rate limits Interfaces for Machines rest-api , metadata-retrieval	0	107	December 2, 2025
JATS elements in abstract (Is this the expected behaviour?) Metadata Retrieval metadata-retrieval , abstracts , jats	8	217	November 26, 2025
Piecing together the Research Nexus: uncovering relationships with open funding metadata - Crossref Metadata Retrieval community , blog , funding , metadata-matching	2	74	October 28, 2025
Meaningful whitespace removed from JSON REST API Metadata Retrieval rest-api , metadata-retrieval	1	40	September 30, 2025
A way, per DOI, to get original metadata deposit XML? Interfaces for Machines rest-api , metadata-retrieval	6	70	September 29, 2025
Upgrade to REST API Elasticsearch Metadata Retrieval rest-api , metadata-retrieval	1	56	September 22, 2025
Any websites that display abstract from metadata service? Metadata Retrieval metadata-retrieval , abstracts	2	52	September 12, 2025
Authenticated-orcid Interfaces for Machines orcid , rest-api , metadata-retrieval	1	183	September 2, 2025
What's going on with the REST API? Indexing issues Interfaces for Machines rest-api , bug	0	199	August 20, 2025
Invalid CSL-JSON record types Interfaces for Machines rest-api , bug , metadata-retrieval , content_type_advice	1	31	August 19, 2025
Fetching reindexed works Metadata Retrieval rest-api , bug , metadata-retrieval , xml_api	9	60	August 18, 2025
OAI-PMH - preprints and incremental updates Metadata Retrieval cited-by , oai-pmh , metadata-retrieval	1	49	August 15, 2025
Publication types for citations in updates for schema 5.4 Metadata Retrieval rest-api , schema , content-registration , metadata-retrieval	5	105	July 4, 2025
Sprinting to Progress: Behind the scenes of our first metadata sprint - Crossref Metadata Retrieval community , blog , metadata-retrieval , research-nexus	1	54	June 23, 2025
Evolving the preprint evaluation world with Sciety Metadata Retrieval blog , api , case-study , api-case-study	1	38	June 18, 2025
DOI number not shown in google scholar, please guide Interfaces for People rest-api , metadata-retrieval , google	2	80	June 8, 2025
Query the REST API with hour / minute / second resolution Metadata Retrieval rest-api , metadata-retrieval , metadata_plus	0	134	May 21, 2025
Search by ORCiD - incomplete results Interfaces for Machines orcid , rest-api , metadata-retrieval , metadata-search	2	93	May 16, 2025