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100BTC Evidence Pack - Academic Paper Lookup
x402
100BTC Evidence Pack - Academic Paper Lookup is a paid API for AI agents from vps-fc89c157-1.taila28d02.ts.net:10000, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-02).
Retrieves up to 3 Crossref-indexed academic paper records matching a query, including DOI, title, venue, authors, abstract, and publication date
Price / call$0.1
Success—
StatusUnknown
How this service works
Thirty x402 v2 pay-per-call APIs by 100BTC. Listing data is generated from each live HTTP 402 challenge and runtime Bazaar schema.
Output
A JSON object with a 'results' array of up to 3 academic paper records from Crossref, each containing DOI, URL, title, venue (journal), authors list, abstract (when available), publication date, and whether an abstract was available. Also includes status, source attribution ('Crossref'), and scope notes.
Example use cases
Literature review seed for research
“I'm starting a literature review on transformer models for protein structure prediction — can you pull up to 3 Crossref-indexed papers on that topic with their abstracts and DOIs?”
Citation verification for a report
“I need to verify there are real peer-reviewed papers on 'long COVID neurological symptoms' — can you search Crossref and show me the titles, venues, and DOIs for anything you find?”
Background research on an emerging topic
“Can you find me recent academic papers on 'carbon capture using direct air capture technology'? I want the titles, authors, journals, and abstracts if available.”
Technical details
Endpoint
POSThttps://vps-fc89c157-1.taila28d02.ts.net:10000/api/evidence-pack?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need quick bibliographic lookups against Crossref's indexed academic literature — especially for DOI retrieval, abstract access, and author/venue data — without needing full-text or synthesis. Prefer this over general web search when you need structured, citable scholarly metadata. Not suitable when you need more than 3 results, full-text PDF access, or AI-synthesized summaries across papers.
Side effects
- Query too short (under 3 characters) returns validation error
- Query too long (over 200 characters) rejected by schema
- No matching papers found in Crossref returns empty results array
- Crossref API unavailability causes upstream error
- Payment not processed (x402) results in HTTP 402 challenge without data
- Ambiguous or very broad queries may return loosely related papers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string |
Output
Schema · Response
{
"type": "json",
"example": {
"scope": "up to 3 Crossref-indexed records; abstract when available; no synthesis",
"source": "Crossref",
"status": "RESULTS",
"product": "EXP-15",
"results": [
{
"doi": "10.1002/example.1",
"url": "https://doi.org/10.1002/example.1",
"title": "Example paper",
"venue": "Example Journal",
"authors": [
"Example Author"
],
"abstract": "Source abstract.",
"published": "2024-01-03",
"abstract_available": true
}
]
}
}Tags
x402
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