Scholarly Paper Metadata Search — Citation Counts & Links
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from $1.50 / 1,000 result returneds
Scholarly Paper Metadata Search — Citation Counts & Links
Search 150M+ scholarly works or look them up by DOI® name: title, journal, publisher, dates, citations, references, licence, full-text links. No author data, no abstracts. Data: Crossref REST API. Not affiliated with Crossref or the DOI Foundation.
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Scholarly Paper & DOI Metadata Search — Citations
Search scholarly works or resolve a list of DOIs through the official Crossref REST API (data source) and get clean, flat rows: title, journal, publisher, work type, publication dates, citation count, reference count, ISSN/ISBN, volume/issue/pages, licence URLs, full-text links and funders. Built for literature reviews, citation checks and AI agents that need verified bibliographic data.
Input
Search mode (this is the example input):
DOI lookup mode (the query is ignored when DOIs are given):
| Field | Meaning |
|---|---|
query | Free-text bibliographic search (title, journal, keywords) |
dois | DOIs or doi.org URLs to resolve exactly |
fromYear / untilYear | Publication year range |
workType | journal-article, proceedings-article, book-chapter, book, posted-content (preprints), dataset, report, dissertation |
sort | relevance · is-referenced-by-count (most cited) · published (newest) |
maxItems | Up to 2,000 rows per run (search mode) |
Output (one row per work)
| Field | Example |
|---|---|
doi, url | 10.1145/3703155 · https://doi.org/10.1145/3703155 |
title, subtitle | A Survey on Hallucination in Large Language Models… |
containerTitle, shortContainerTitle | ACM Transactions on Information Systems |
publisher, type | Association for Computing Machinery (ACM) · journal-article |
publishedDate, publishedPrint, publishedOnline | 2025-01-24 |
issn, isbn, volume, issue, page | ["1046-8188", "1558-2868"] |
citedByCount, referencesCount | 2273 · 391 |
authorCount | 11 (number only — no names) |
licenseUrls, fullTextLinks, funders | publisher licence / text-mining links, funder organisations |
source, scrapedAt | data source note · UTC timestamp |
What is deliberately not included
- No personal data: author and editor names, ORCID iDs and personal affiliations are not output (
authorCountonly). - No abstracts: Crossref notes that some abstracts may be copyrighted by publishers or authors.
- No bulk dumps: at most 2,000 rows per run, for the query or DOIs you give.
Data source and licence
- Crossref REST API (
api.crossref.org), no sign-up or key. Crossref: "almost none of the metadata is subject to copyright" and "you may use it for any purpose". - Polite use: one request at a time with at least 1.5 s between requests (Crossref public pool allows 1 request per second).
- Citation counts are Crossref's
is-referenced-by-count(citations from other Crossref-registered works), not Google Scholar counts.
Not affiliated with or endorsed by Crossref.
