Entity Search

{
  "ambiguous": true,
  "asOf": "2026-10-11T08:43:27.782Z",
  "attribution": "Data: Wikidata, CC0 1.0 public domain dedication (https://www.wikidata.org/wiki/Wikidata:Licensing).",
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "language": "en",
  "notChecked": [
    "ranking by popularity (results follow Wikidata's text-match order)",
    "entities with no label or alias in the chosen language",
    "…1 more"
  ],
  "query": "Mercury",
  "reasons": [
    "More than one entity has this exact label: choose by description and instanceOf, then pass the Q-id to other endpoints.",
    "Instance-of hints come from a tiny Query Service lookup and may be absent."
  ],
  "results": [
    {
      "description": "automobile marque of the Ford Motor Company",
      "id": "Q613883",
      "instanceOf": [
        "trademark",
        "division",
        "…1 more"
      ],
      "label": "Mercury",
      "matchedOn": {
        "text": "Mercury",
        "type": "label"
      },
      "url": "https://www.wikidata.org/wiki/Q613883"
    },
    {
      "description": "commune in Savoie, France",
      "id": "Q1231263",
      "instanceOf": [
        "commune of France"
      ],
      "label": "Mercury",
      "matchedOn": {
        "text": "Mercury",
        "type": "label"
      },
      "url": "https://www.wikidata.org/wiki/Q1231263"
    }
  ],
  "source": "Wikidata (CC0)",
  "sourceUrl": "https://www.wikidata.org",
  "summary": "4 Wikidata entities are named \"Mercury\"; top candidates: Q613883 (automobile marque of the Ford Motor Company); Q1231263 (commune in Savoie, France); Q308 (first planet from the Solar System and small…",
  "verdict": "AMBIGUOUS"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://wikidata-facts.x402tookit.com/entity-search?limit=5&q=Mercury'

# 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://wikidata-facts.x402tookit.com/entity-search?limit=5&q=Mercury' \
  | 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 $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
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 $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwikidata-facts.x402tookit.com%2Fentity-search
const res = await pay("https://wikidata-facts.x402tookit.com/entity-search?limit=5&q=Mercury");
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 $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://wikidata-facts.x402tookit.com/entity-search?limit=5&q=Mercury")
    print(res.status_code, res.text)