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fittings DOI Metadata Resolver
x402
fittings DOI Metadata Resolver is a paid API for AI agents from fittings.sh, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).
Resolve a DOI to full bibliographic metadata including title, authors, journal, abstract, licence, funders, and citation counts via Crossref.
Price / call$0.003
Success—
StatusUnknown
How this service works
Resolve a DOI to bibliographic metadata: title, authors, journal, dates, abstract, licence, funders and citation counts.
Output
Returns structured bibliographic metadata for the resolved DOI, including title, author list, journal name, publication and online dates, abstract text, open-access licence information, funder names and grant IDs, and Crossref-sourced citation count.
Example use cases
Citing a paper in a report
“I'm writing a report and need the full citation details for this paper: DOI 10.1016/j.cell.2021.05.007 — can you get me the title, authors, journal, and publication date?”
Checking a paper's funder disclosure
“Can you tell me who funded the research behind DOI 10.1126/science.abm0555? I need the funder names and any grant info that's available.”
Assessing a paper's impact by citation count
“How many times has the paper with DOI 10.1093/bioinformatics/btab234 been cited? Also grab the title and journal so I can confirm it's the right one.”
Technical details
Endpoint
GEThttps://fittings.sh/v1/crossref/doi-metadata?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need rich, structured bibliographic data for a known DOI, especially when you require abstract text, funder information, or citation counts in a single call. It wraps Crossref directly so it is best for journal articles, preprints, and book chapters indexed by Crossref. Prefer alternatives if you need full-text retrieval, PubMed-specific metadata, or data from sources outside Crossref (e.g., arXiv-only preprints).
Side effects
- DOI not found in Crossref — returns a 404 or empty result
- Malformed DOI string causes a validation error
- Some fields (abstract, licence, funders) may be absent if not deposited by publisher
- Rate limiting may apply for high-volume usage
- doi.org redirect chain may fail for very new or retracted DOIs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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