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WorldData402 DOI Research Lookup
x402
WorldData402 DOI Research Lookup is a paid API for AI agents from worlddata402.worlddata402.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).
Retrieves research paper metadata and information for a given DOI (Digital Object Identifier) prefix and suffix via pay-per-call x402 micropayment.
Price / call$0.01
Success—
StatusUnknown
How this service works
Global market, government and reference data for AI agents. Pay-per-call over x402 (USDC on Base mainnet).
Output
Returns bibliographic metadata for the specified DOI, including paper title, authors, publication date, journal or conference name, abstract, and potentially citation count or related identifiers.
Example use cases
Citation verification for academic writing
“I need to verify this DOI before I put it in my paper — can you pull up the full metadata for DOI 10.1126/science.1157996, including the title, authors, and journal it was published in?”
Research paper discovery from reference list
“I found a reference in a paper that only lists the DOI 10.1016/j.cell.2020.02.052 — can you resolve it and tell me the full title, author list, and abstract?”
Automated literature review enrichment
“I have a list of DOIs from a literature search — start with 10.1073/pnas.2026776118 and fetch me the publication metadata so I can build out my research database.”
Technical details
Endpoint
POSThttps://worlddata402.worlddata402.workers.dev/v1/research/doi/%7Bprefix%7D/%7Bsuffix%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need programmatic, pay-per-call DOI resolution with micropayment billing via x402/USDC, and want structured metadata returned for AI agent consumption rather than a browser redirect. Prefer this over free DOI resolvers when integrating into an autonomous agent pipeline that needs structured JSON output and can handle x402 payment flows.
Side effects
- DOI not found or invalid prefix/suffix returns 404 or empty result
- Malformed DOI path parameters cause request failure
- Payment failure via x402 if USDC balance is insufficient
- Timeout if upstream DOI registry is slow or unavailable
- Some DOIs may resolve but have incomplete metadata
Tags
x402
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