Search
by Academic Paper Search in Search & web
Scientific and academic paper search: research papers and scholarly literature from arXiv, PubMed, OpenAlex, Crossref and Semantic Scholar in one call, deduplicated and retraction-aware. Each hit: DOI, authors, venue, snippet, citation count and citations per year, type, open-access PDF link. Sort by relevance, recency, citations or impact. Keyless. For literature review and citing research.
https://papers.use.x402atlas.com/search- Price
- $0.01
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 498 ms
- 567 ms slowest 5%
- Last check
- Passed
- 5 h ago, next any minute now
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
GET https://papers.use.x402atlas.com/search
Each call costs $0.01 in USDC on Polygon, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
GET https://papers.use.x402atlas.com/search?limit=10&open_access=false&query=transformer+attention+mechanism&sort=impact&source=all&year_from=2017&year_to=2026Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | integer | No | Default: 20. |
open_access | boolean | No | true keeps only items with a pdfUrl Default: false. |
query | string | Yes | Free-text search |
sort | string | No | impact = citations per year One of: relevance, recency, citations, impact. Default: "relevance". |
source | string | No | One of: all, arxiv, pubmed, openalex, crossref, semanticscholar. Default: "all". |
year_from | integer | No | |
year_to | integer | No |
Example response
The provider's example. We can't check it without paying.
Example response, 32 lines
{
"count": 1,
"coverage": {
"complete": true,
"missing": [],
"retry": false
},
"items": [
{
"authors": [
"Ashish Vaswani",
"Noam Shazeer",
"Niki Parmar"
],
"citationCount": 181057,
"citationsPerYear": 18105.7,
"detail_url": "https://papers.use.x402atlas.com/paper?id=10.48550/arxiv.1706.03762",
"doi": "10.48550/arxiv.1706.03762",
"id": "10.48550/arxiv.1706.03762",
"is_retracted": false,
"oa_status": "green",
"pdfUrl": "https://arxiv.org/pdf/1706.03762",
"snippet": "The dominant sequence transduction models are based on complex recurrent or convolutional neural networks that include an encoder and a decoder. The best performing models also connect the encoder and decoder through an attention mechanism…",
"title": "Attention Is All You Need",
"type": "preprint",
"url": "https://doi.org/10.48550/arxiv.1706.03762",
"venue": "Advances in Neural Information Processing Systems",
"year": 2017
}
],
"query": "transformer attention mechanism year:2017-2026 sort:impact"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://papers.use.x402atlas.com/search?limit=10&open_access=false&query=transformer+attention+mechanism&sort=impact&source=all&year_from=2017&year_to=2026'
# 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://papers.use.x402atlas.com/search?limit=10&open_access=false&query=transformer+attention+mechanism&sort=impact&source=all&year_from=2017&year_to=2026' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fpapers.use.x402atlas.com%2Fsearch
const res = await pay("https://papers.use.x402atlas.com/search?limit=10&open_access=false&query=transformer+attention+mechanism&sort=impact&source=all&year_from=2017&year_to=2026");
console.log(res.status, await res.text());Python: pay and call
# 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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://papers.use.x402atlas.com/search?limit=10&open_access=false&query=transformer+attention+mechanism&sort=impact&source=all&year_from=2017&year_to=2026")
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 5 h ago | Passed | 402 | 498 ms | $0.01 |
| 10 h ago | Passed | 402 | 567 ms | $0.01 |