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CrossRef Title Search
x402
CrossRef Title Search is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-28).
Searches CrossRef's academic database for scholarly publications matching a title or topic query, returning DOIs, authors, venues, and publication dates.
Price / call$0.004
Success—
StatusUnknown
How this service works
200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.
Output
A JSON object containing the original query parameters and a list of matched papers, each with a DOI, title, journal/venue name, list of authors, and publication date string.
Example use cases
Literature review for a research paper
“Find me the top 10 CrossRef papers on transformer neural networks — I need the titles, authors, venues, and DOIs so I can build my literature review section.”
Verify a paper's DOI and citation details
“Can you search CrossRef for a paper called 'Attention Is All You Need' and return its DOI, publication venue, and author list?”
Explore recent work in a new field
“I'm just getting into quantum cryptography — search CrossRef for 8 papers on that topic and tell me where they were published and when.”
Technical details
Endpoint
GEThttps://fastx402.tools/crossref-title-search?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need bibliographic metadata (DOIs, authors, venues, dates) for academic publications by title or topic. It is ideal for building literature reviews, verifying citations, or discovering papers in a research area. Prefer it over general web search when you specifically need structured scholarly metadata from CrossRef's database.
Side effects
- No matches found for an obscure or misspelled title — returns empty matches array
- Too few results if 'rows' exceeds available matches for a niche topic
- Rate limiting or payment failure if USDC balance is insufficient
- Ambiguous title returns unrelated papers — requires more specific query
- CrossRef upstream outage or timeout returns an error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": {
"rows": 2,
"title": "quantum computing"
},
"matches": [
{
"doi": "10.1000/example",
"title": "Quantum Computing: An Introduction",
"venue": "Journal of Examples",
"authors": [
"Ada Lovelace",
"Turing"
],
"publication_date": "2024-05-02"
},
{
"doi": "10.1000/second",
"title": "Quantum Algorithms",
"venue": "Computing Letters",
"authors": [
"Grace Hopper"
],
"publication_date": "2023-01-01"
}
]
}
}Tags
x402
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