$0.03
per call · USD Coin on Base
Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation count — for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.
Endpoint
GET https://api.kadec0.xyz/v1/paper-details8
Calls / 30d
1
Unique payers / 30d
Sep 8
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.kadec0.xyz/v1/paper-details", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://api.kadec0.xyz/v1/paper-details?doi=10.48550%2FarXiv.1706.03762" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"count": 1,
"items": [
{
"citationCount": 181057,
"citedBy": [
{
"citedByCount": 90000,
"title": "BERT: Pre-training...",
"year": 2019
}
],
"doi": "10.48550/arxiv.1706.03762",
"fieldsOfStudy": [
"Computer Science"
],
"referenceCount": 41,
"references": [
{
"doi": "...",
"title": "Neural Machine Translation...",
"year": 2014
}
],
"title": "Attention Is All You Need",
"type": "paper_details",
"year": 2017
}
]
}Payment details
0x4df66b6c140778fe0717880a7c6dde5ea53acdeaUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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