Research Papers

{
  "checkedAt": "2026-10-15T19:01:48.972Z",
  "count": 2,
  "query": "retrieval augmented generation",
  "results": [
    {
      "abstract": "Vladimir Karpukhin, Barlas Oguz, Sewon Min, Patrick Lewis, Ledell Wu, Sergey Edunov, Danqi Chen, Wen-tau Yih. Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP). 2020.",
      "authors": [
        {
          "institutions": [
            "Meta (Israel)"
          ],
          "name": "Vladimir Karpukhin"
        },
        {
          "institutions": [
            "Meta (Israel)"
          ],
          "name": "Barlas Oğuz"
        },
        {
          "institutions": [
            "University of Washington"
          ],
          "name": "Sewon Min"
        }
      ],
      "citations": 3397,
      "doi": "https://doi.org/10.18653/v1/2020.emnlp-main.550",
      "id": "https://openalex.org/W3015883388",
      "openAccessPdf": "https://www.aclweb.org/anthology/2020.emnlp-main.550.pdf",
      "title": "Dense Passage Retrieval for Open-Domain Question Answering",
      "topic": "Topic Modeling",
      "venue": "Conference on Empirical Methods in Natural Language Processing (EMNLP)",
      "year": 2020
    },
    {
      "abstract": "Affordance-Compiled Intelligence develops Cognitive Impedance Matching Theory (CIMT), an observable-only and no-meta protected compiler theory for LLM-integrated systems. The paper studies how a fixed model-policy can exhibit different operational capability when the surrounding world is redesigned through observations, typed action handles, validators, repair paths, rollback modes, authority scopes, context summaries, and auditable receipts. CIMT treats system-level capability amplification as a world-side compilation problem rather than a model-weight improvement problem. It defines operatio…",
      "authors": [
        {
          "institutions": [],
          "name": "Patrick Lewis"
        },
        {
          "institutions": [],
          "name": "Ethan Perez"
        },
        {
          "institutions": [],
          "name": "Aleksandra Piktus"
        }
      ],
      "citations": 3027,
      "doi": "https://doi.org/10.48550/arxiv.2005.11401",
      "id": "https://openalex.org/W3027879771",
      "openAccessPdf": "https://arxiv.org/pdf/2005.11401",
      "title": "Affordance-Compiled Intelligence: Observable-Only Cognitive Impedance Matching for No-Meta LLM-Integrated Systems",
      "topic": "Safety Systems Engineering in Autonomy",
      "venue": "arXiv (Cornell University)",
      "year": 2020
    }
  ],
  "sort": "citations",
  "source": "OpenAlex works (openalex.org, CC0 data; API terms at docs.openalex.org)",
  "total": 57526
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/research/papers?limit=2&q=retrieval+augmented+generation&sort=citations'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.sitecheck-api.workers.dev/api/research/papers?limit=2&q=retrieval+augmented+generation&sort=citations' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fresearch%2Fpapers
const res = await pay("https://api.sitecheck-api.workers.dev/api/research/papers?limit=2&q=retrieval+augmented+generation&sort=citations");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/research/papers?limit=2&q=retrieval+augmented+generation&sort=citations")
    print(res.status_code, res.text)