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Declared Publication Relations
x402
Declared Publication Relations is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.0189/call, status unknown (last checked 2026-10-30).
Returns declared relationships (e.g. dataset links, supplement links, related works) from Crossref metadata for a given DOI, without verifying linked resource availability.
Price / call$0.0189
Success—
StatusUnknown
How this service works
Return bounded relationships declared in Crossref metadata. Linked resource types, availability and reproducibility are not verified; linked files are not fetched.
Output
A list of declared relationships from Crossref metadata for the specified DOI, including linked resource types and relation kinds (e.g. is-supplement-to, has-preprint, references-dataset). Resource availability, file contents, and link validity are not verified or fetched.
Example use cases
Tracing dataset links for a paper
“I'm reviewing the paper with DOI 10.1126/science.abc1234 — can you find all the datasets or supplemental files it declares in its Crossref metadata so I can see what data it claims to link to?”
Reproducibility audit for a journal article
“For the article at DOI 10.1371/journal.pone.0123456, pull up its declared relations from Crossref — I want to know what reproducibility or data-availability links it has listed, treating it as public data.”
Mapping related works in a literature review
“I'm doing a literature review and need the declared related-works relationships from Crossref for DOI 10.1016/j.cell.2020.02.058 — can you fetch those using public class data?”
Technical details
Endpoint
POSThttps://www.mahastrategies.com/api/v1/intel/publications/declared-relations?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to enumerate declared bibliographic or data relationships for a specific publication as recorded in Crossref metadata, without needing to verify or fetch the linked resources themselves. It is appropriate for literature review pipelines, reproducibility audits, and scholarly data-linkage mapping where declared intent (not verified availability) is what matters.
Side effects
- DOI not found in Crossref — returns empty or error response
- Malformed or too-short DOI string — validation error
- No declared relations exist for the given DOI — returns empty relationship list
- Invalid dataClass enum value — schema validation error
- Rate limiting or payment failure via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| doi | string | |
| dataClass | string |
Tags
x402
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