ToolVet
75trust / 100

Search Scholar

by WebLens in Search & web

x402 APIPassing, checked 3 h ago

Google Scholar academic search. Returns papers with snippets, publication info, and citation counts.

POST
https://api.weblens.dev/search/scholar
Price
$0.015
per call in USDC
Uptime
100%
last 30 days
Response time
549 ms
853 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

POST https://api.weblens.dev/search/scholar

Each call costs $0.015 in USDC on Base, 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.

POST https://api.weblens.dev/search/scholar
content-type: application/json

{
  "limit": 10,
  "query": "x402 payment protocol"
}

Parameters

ParameterTypeRequiredDescription
limitnumberNoMaximum results to return Default: 10.
querystringYesSearch query

Example response

The provider's example. We can't check it without paying.

{
  "query": "transformer attention mechanisms",
  "requestId": "req_scholar123",
  "results": [
    {
      "citedBy": 130000,
      "position": 1,
      "publicationInfo": "A Vaswani, N Shazeer - NeurIPS, 2017",
      "snippet": "The dominant sequence transduction models...",
      "title": "Attention Is All You Need",
      "url": "https://arxiv.org/abs/1706.03762"
    }
  ],
  "searchedAt": "2026-07-25T12:00:00.000Z"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.015.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.weblens.dev/search/scholar' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10,"query":"x402 payment protocol"}'

# 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 - -X POST 'https://api.weblens.dev/search/scholar' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10,"query":"x402 payment protocol"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: 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 $0.015 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.015" });
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 $0.015 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.weblens.dev%2Fsearch%2Fscholar&method=POST
const res = await pay("https://api.weblens.dev/search/scholar", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 10,
    "query": "x402 payment protocol"
  }),
});
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 $0.015 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.015"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.weblens.dev/search/scholar",
        json={
            "limit": 10,
            "query": "x402 payment protocol",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402874 ms$0.015
7 h agoPassed402544 ms$0.015
11 h agoPassed402549 ms$0.015
15 h agoPassed402853 ms$0.015
19 h agoPassed402785 ms$0.015
Show 1 older checks
23 h agoPassed402286 ms$0.015