ToolVet
80trust / 100

Wikidata

by SiteCheck in Other

x402 APIPassing, checked 19 min ago

Runs a read-only SPARQL query on Wikidata and returns the rows as plain values (ASK returns true or false). Only SELECT and ASK are allowed; updates are refused. A LIMIT of 100 or less is added when missing. 8-second limit. Data is CC0.

GET
https://api.sitecheck-api.workers.dev/api/wikidata
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
67 ms
890 ms slowest 5%
Last check
Passed
19 min ago, next in 12 min

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

GET https://api.sitecheck-api.workers.dev/api/wikidata

Each call costs $0.002 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.

GET https://api.sitecheck-api.workers.dev/api/wikidata?query=SELECT+%3Fcity+%3FcityLabel+WHERE+%7B+%3Fcity+wdt%3AP31+wd%3AQ6256+.+SERVICE+wikibase%3Alabel+%7B+bd%3AserviceParam+wikibase%3Alanguage+%22en%22.+%7D+%7D+LIMIT+3

Parameters

ParameterTypeRequiredDescription
querystringYesA SPARQL SELECT or ASK query, up to 4,000 characters

Example response

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

{
  "attribution": "Wikidata (CC0)",
  "checkedAt": "2026-10-14T07:01:31.494Z",
  "columns": [
    "city",
    "cityLabel"
  ],
  "query": "SELECT ?city ?cityLabel WHERE { ?city wdt:P31 wd:Q6256 . SERVICE wikibase:label { bd:serviceParam wikibase:language \"en\". } } LIMIT 3",
  "rowCount": 3,
  "rows": [
    {
      "city": "http://www.wikidata.org/entity/Q750",
      "cityLabel": "Bolivia"
    },
    {
      "city": "http://www.wikidata.org/entity/Q754",
      "cityLabel": "Trinidad and Tobago"
    },
    {
      "city": "http://www.wikidata.org/entity/Q757",
      "cityLabel": "Saint Vincent and the Grenadines"
    }
  ],
  "source": "https://query.wikidata.org/sparql"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/wikidata?query=SELECT+%3Fcity+%3FcityLabel+WHERE+%7B+%3Fcity+wdt%3AP31+wd%3AQ6256+.+SERVICE+wikibase%3Alabel+%7B+bd%3AserviceParam+wikibase%3Alanguage+%22en%22.+%7D+%7D+LIMIT+3'

# 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/wikidata?query=SELECT+%3Fcity+%3FcityLabel+WHERE+%7B+%3Fcity+wdt%3AP31+wd%3AQ6256+.+SERVICE+wikibase%3Alabel+%7B+bd%3AserviceParam+wikibase%3Alanguage+%22en%22.+%7D+%7D+LIMIT+3' \
  | 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 $0.002 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%2Fwikidata
const res = await pay("https://api.sitecheck-api.workers.dev/api/wikidata?query=SELECT+%3Fcity+%3FcityLabel+WHERE+%7B+%3Fcity+wdt%3AP31+wd%3AQ6256+.+SERVICE+wikibase%3Alabel+%7B+bd%3AserviceParam+wikibase%3Alanguage+%22en%22.+%7D+%7D+LIMIT+3");
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 $0.002 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/wikidata?query=SELECT+%3Fcity+%3FcityLabel+WHERE+%7B+%3Fcity+wdt%3AP31+wd%3AQ6256+.+SERVICE+wikibase%3Alabel+%7B+bd%3AserviceParam+wikibase%3Alanguage+%22en%22.+%7D+%7D+LIMIT+3")
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
19 min agoPassed402444 ms$0.002
5 h agoPassed402890 ms$0.002
9 h agoPassed402161 ms$0.002
13 h agoPassed40256 ms$0.002
18 h agoPassed40243 ms$0.002
Show 1 older checks
22 h agoPassed40267 ms$0.002