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OpenAlex Scholarly Literature Search
x402
OpenAlex Scholarly Literature Search is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Searches 250M+ academic works in OpenAlex by keyword, returning titles, authors, institutions, year, journal, citation count, DOI, and open-access links, sortable by relevance, citations, or recency.
Price / call$0.003
Success—
StatusUnknown
How this service works
Search scholarly literature across all fields in OpenAlex (250M+ works): title, authors, institutions, year, journal, citation count, DOI and open-access link; by relevance, citations or date.
Output
Returns a list of academic works matching the query, each including title, authors array, affiliated institutions, publication year, journal/venue name, citation count, work type, DOI, and an open-access URL if available. Also includes the total number of matching results and the source (OpenAlex).
Example use cases
Finding foundational papers for a literature review
“I'm starting a literature review on transformer neural networks — can you find the 20 most-cited academic papers on that topic across all fields, sorted by citation count?”
Discovering recent open-access research
“Find me the 15 most recent open-access papers on microplastics in marine ecosystems published since 2021, sorted by date.”
Exploring research output in a niche area
“Search for scholarly works on long COVID cognitive effects — give me up to 10 results sorted by relevance, and include the DOI and journal for each.”
Technical details
Endpoint
POSThttps://api.vextorium.com/investigacion-buscar-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, metadata-rich academic search results from a comprehensive multidisciplinary corpus (250M+ works). It's ideal when you need citation counts, open-access links, institutional affiliations, or DOI data alongside search results. Prefer it over general web search when the user explicitly wants peer-reviewed or scholarly sources, or when building literature review pipelines.
Side effects
- Empty query string returns validation error
- No results found for highly niche or misspelled queries
- Rate limiting or payment failure returns HTTP 402 or 429
- Invalid enum value for 'orden' field causes schema validation error
- Very broad queries may return truncated or low-relevance results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| orden | string | |
| buscar | string | |
| limite | integer | |
| desde_año | integer | |
| solo_abiertos | boolean |
Tags
x402
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