x402 census · api.kadec0.xyz · c12f6ee0c78b · JSON

GET /v1/paper-details

unprobed

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.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://api.kadec0.xyz/v1/paper-details

Method GET

Price $0.03 USDC = 30000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA

Seller api.kadec0.xyz

Catalogs cdp (row updated 2026-09-27)

Listed since (lower bound) 2026-09-27 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-27

CDP quality counters 7 calls and 2 unique payers in 30 days, last call 2026-09-27 (catalog-reported, not verified on chain)

Category (keyword rule) other/unknown

Templated path no

x402Version in catalog 2

Service name / tags Citations, References, Cited-By · citation-lookup, citations, references, cited-by, doi-lookup

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 110

Payments 363

USDC volume $5.56

Median payment $0.01

First / last payment 2026-06-22 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "doi": "10.48550/arXiv.1706.03762"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "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
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://api.kadec0.xyz/v1/paper-details' -H 'accept: application/json'

The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/c12f6ee0c78b/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c12f6ee0c78b"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on api.kadec0.xyz.