Property Value

{
  "alternatives": [],
  "asOf": "2026-10-11T08:44:17.758Z",
  "attribution": "Data: Wikidata, CC0 1.0 public domain dedication (https://www.wikidata.org/wiki/Wikidata:Licensing).",
  "best": {
    "amount": 2103778,
    "kind": "quantity",
    "lower": null,
    "pointInTime": "2023-01-01",
    "unit": null,
    "unitLabel": "dimensionless",
    "upper": null
  },
  "count": 10,
  "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.",
  "label": "Paris",
  "markersWithoutValue": 0,
  "notChecked": [
    "statement references (sources cited inside Wikidata)",
    "qualifiers other than start time, end time and point in time",
    "…1 more"
  ],
  "property": "P1082",
  "propertyLabel": "population",
  "reasons": [
    "All non-deprecated values shown.",
    "best is the latest point-in-time value for time series, else the preferred or open-ended value."
  ],
  "resolvedVia": "id",
  "source": "Wikidata (CC0)",
  "sourceUrl": "https://www.wikidata.org",
  "summary": "Paris P1082 (population): 10 values; latest 2103778.",
  "url": "https://www.wikidata.org/wiki/Q90",
  "values": [
    {
      "pointInTime": "2020-01-01",
      "rank": "normal",
      "value": {
        "amount": 2145906,
        "kind": "quantity",
        "lower": null,
        "unit": null,
        "unitLabel": "dimensionless",
        "upper": null
      }
    },
    {
      "pointInTime": "2019-01-01",
      "rank": "normal",
      "value": {
        "amount": 2165423,
        "kind": "quantity",
        "lower": null,
        "unit": null,
        "unitLabel": "dimensionless",
        "upper": null
      }
    }
  ],
  "verdict": "VALUES_FOUND",
  "wikidataId": "Q90"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://wikidata-facts.x402tookit.com/property-value?id=Q90&property=P1082'

# 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/property-value?id=Q90&property=P1082' \
  | 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%2Fproperty-value
const res = await pay("https://wikidata-facts.x402tookit.com/property-value?id=Q90&property=P1082");
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/property-value?id=Q90&property=P1082")
    print(res.status_code, res.text)