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Vextorium Scholarly Search
x402
Vextorium Scholarly Search is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).
Searches 250M+ academic works in OpenAlex by keyword, returning titles, authors, institutions, year, journal, citation count, DOI, and open-access links.
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 scholarly works with OpenAlex ID, DOI, type (article/review/etc.), publication year, title, authors array, journal name, citation count, open-access PDF URL (if available), and affiliated institutions, plus the total number of matching works and the source attribution (OpenAlex CC0).
Example use cases
Literature review for a research paper
“Find me the 15 most-cited academic papers on CRISPR gene editing published since 2015, sorted by citation count — I need titles, authors, journals, and open-access links if available.”
Monitoring recent AI safety research
“Search scholarly literature for the latest papers on 'AI alignment and safety', sorted by most recent, limit to 20 results, and only include open-access articles.”
Due diligence on a scientific claim
“Can you find peer-reviewed research on 'mRNA vaccine efficacy against COVID-19 variants'? Give me up to 25 results ranked by relevance so I can see what the scientific consensus looks like.”
Technical details
Endpoint
POSThttps://api.vextorium.com/v1/scholarly-search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need broad, multi-disciplinary academic literature search across 250M+ works with citation counts, DOI, and open-access links in a single call. Prefer it over web search for finding peer-reviewed research, building literature reviews, or verifying scientific claims with bibliometric data. It is particularly strong for filtering by recency and open-access availability, and for sorting by citation impact.
Side effects
- Empty results if search query is too specific or uses non-standard terminology
- Null open_access field when paper is paywalled or no OA version is indexed
- Missing DOI for older or non-journal works
- Citation counts may lag real-time by weeks due to OpenAlex update cadence
- since_year filter may exclude relevant older foundational works if set too restrictively
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"jobs": [
{
"id": "https://openalex.org/W2899357412",
"doi": "https://doi.org/10.1016/j.rser.2018.10.014",
"type": "review",
"year": 2018,
"title": "Blockchain technology in the energy sector: A systematic review of challenges and opportunities",
"authors": [
"Merlinda Andoni",
"Valentin Robu"
],
"journal": "Renewable and Sustainable Energy Reviews",
"citations": 2447,
"open_access": "https://www.sciencedirect.com/science/article/pii/S1364032118307184/pdf",
"institutions": [
"Durham University",
"Heriot-Watt University"
]
},
{
"id": "https://openalex.org/W3123597155",
"doi": "https://doi.org/10.1093/rof/rfw074",
"type": "article",
"year": 2016,
"title": "Corporate Governance and Blockchains",
"authors": [
"David Yermack"
],
"journal": "European Finance Review",
"citations": 1030,
"open_access": null,
"institutions": [
"Cardiff University",
"Concordia University"
]
}
],
"total": 26170,
"search": "agent payments blockchain",
"source": "OpenAlex (CC0)"
}
}Tags
x402
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