Metadata Retrieval

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. 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.

Topic	Replies	Views	Activity
About the Metadata Retrieval category Metadata Retrieval	0	1775	April 21, 2020
Evolving the preprint evaluation world with Sciety Metadata Retrieval blog , api , case-study , api-case-study	1	7	June 18, 2025
Publication types for citations in updates for schema 5.4 Metadata Retrieval rest-api , schema , content-registration , metadata-retrieval	2	32	June 11, 2025
DOI number not shown in google scholar, please guide Interfaces for People rest-api , metadata-retrieval , google	2	18	June 8, 2025
Query the REST API with hour / minute / second resolution Metadata Retrieval rest-api , metadata-retrieval , metadata_plus	0	31	May 21, 2025
Search by ORCiD - incomplete results Interfaces for Machines orcid , rest-api , metadata-retrieval , metadata-search	2	51	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	66	May 7, 2025
A new dataset of relationships involving research organisations Metadata Retrieval research-nexus , metadata-matching , data-science	0	286	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	79	April 9, 2025
New version of the dataset of relationships between preprints and journal articles Metadata Retrieval preprints , metadata-matching , data-science	0	114	April 3, 2025
Querying citations via API Metadata Retrieval cited-by , xml_api	7	78	March 26, 2025
Maximum value counts for facet queries in the REST API Metadata Retrieval rest-api	0	35	March 26, 2025
Retraction Watch retractions now in the Crossref API - Crossref Metadata Retrieval rest-api , blog , retractions , research-integrity , retraction_watch	7	111	March 25, 2025
How to query works that match a given AND family name? Metadata Retrieval orcid , rest-api , metadata-retrieval	7	127	March 25, 2025
Updates to chapter licenses in the REST API Metadata Retrieval rest-api , licenses , metadata-retrieval , book	0	60	March 18, 2025
Missing DOIs/articles in OAI-PMH results Interfaces for Machines oai-pmh , bug , metadata-retrieval	5	466	March 13, 2025
2025 public data file now available - Crossref Metadata Retrieval rest-api , metadata , community , blog , metadata-retrieval	1	41	March 12, 2025
Incorrect contributors for book chapters Metadata Retrieval metadata-retrieval , book	1	9	March 3, 2025
Adding redirects for aliased DOIs in the REST API Metadata Retrieval rest-api , alias , snapshots , public-data-file	6	196	February 25, 2025
Predecessor and Successor Journals Metadata Retrieval metadata-retrieval , journal , relationships	2	33	February 24, 2025
Updates do the REST API documentation Metadata Retrieval rest-api , metadata-retrieval	0	79	February 19, 2025
Resource URL added to select field in the REST API works endpoint Metadata Retrieval rest-api , resolution_urls	0	17	January 13, 2025
Modification of the affiliation field Metadata Retrieval rest-api , metadata-retrieval , xml_support , affiliation	2	23	January 10, 2025
Ticket of the month - December 2024 - Retraction Watch Tips Interfaces for Machines support , metadata-retrieval , ticket_of_month , retractions , retraction_watch	0	60	January 9, 2025
Metadata matching: beyond correctness - Crossref Metadata Retrieval metadata , blog , linking , metadata-matching , data-science	0	25	January 8, 2025
Overlap between different services providing citation data Interfaces for Machines rest-api , references , cited-by , google	5	1560	December 23, 2024
Massive drop in results from works endpoint? Metadata Retrieval rest-api , metadata-retrieval , openalex	10	108	December 2, 2024
URL elements in the REST API follow DOI display guidelines Metadata Retrieval rest-api	0	26	November 28, 2024
Advanced set/boolean operators Interfaces for Machines rest-api , metadata-retrieval	2	558	November 18, 2024
Using the public data file via a Lightning key:value (DOI:metadata) database (`crossref-lmdb`) Metadata Retrieval metadata , metadata-retrieval , public-data-file	1	35	November 5, 2024