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Paper Full-Text & Open-Access PDF Retrieval
x402
Paper Full-Text & Open-Access PDF Retrieval is a paid API for AI agents from api.kadec0.xyz, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-13).
Retrieves the full readable body of an academic paper (split into sections) and its open-access PDF location, given an arXiv ID, DOI, OpenAlex ID, PMID, or PMCID.
Price / call$0.04
Success—
StatusUnknown
How this service works
Full text and open-access PDF retrieval for a paper. Given an arXiv id, DOI, OpenAlex id, PMID, or PMCID, returns the readable body split into sections (introduction, methods, results) plus the open-access PDF location: arXiv via ar5iv, biomedical via Europe PMC, OA locations via OpenAlex for the rest. The 'now read it' call after a paper search. Keyless.
Output
Returns the paper's readable body split into named sections (e.g., introduction, methods, results, discussion) and the open-access PDF location sourced from arXiv/ar5iv, Europe PMC, or OpenAlex depending on the paper type.
Example use cases
Extract methodology from biomedical paper
“I found a study on PubMed with PMID 34567890 that looks really relevant — can you pull up the full text and summarize what methods they used and what their main results were?”
Download PDF for offline reading
“I have the DOI 10.1038/s41586-023-06792-0 for a Nature paper I want to read later — can you find the open-access PDF location so I can download it?”
Compare results across multiple papers
“I've got three arXiv papers — 2301.07041, 2302.13971, and 2303.08774 — can you fetch the results and discussion sections from each so I can compare their findings side by side?”
Technical details
Endpoint
GEThttps://api.kadec0.xyz/v1/paper-fulltextWhen to prefer
Use this endpoint after identifying a specific paper (e.g., via a paper search) and needing to read or process its full content. Ideal for agents that need to analyze methodology, extract findings, or locate the PDF of an open-access paper by any standard academic identifier. Prefer over general web scraping because it normalizes content across arXiv, biomedical, and general OA repositories automatically.
Side effects
- Paper not open-access — no full text or PDF available, returns empty or partial content
- Invalid or unrecognized ID format — returns 400 or error response
- Paper not indexed by any supported provider (arXiv, Europe PMC, OpenAlex) — no content returned
- Network timeout or upstream provider unavailability — 503 or timeout error
- arXiv ID exists but ar5iv HTML rendering not yet available — partial content returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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