O

Onesource · Chain NFT Owner

by Onesource

GETBase

$0.003

per call · USD Coin on Base

Look up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)

Endpoint

GET https://api.onesource.io/api/chain/nft-owner

424

Calls / 30d

424

Unique payers / 30d

Sep 10

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://api.onesource.io/api/chain/nft-owner", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://api.onesource.io/api/chain/nft-owner?contract=0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d&network=ethereum&token_id=1" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "data": {
    "contract_address": "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
    "owner": "0x46efbaedc92067e6d60e84ed6395099723253d67",
    "token_id": "1"
  },
  "meta": {
    "cost_usdc": "0.001",
    "endpoint": "/api/chain/nft-owner",
    "payment_chain": "base",
    "payment_token": "USDC",
    "request_id": "00000000abcdef01"
  }
}

Payment details

Pay to0x52e29e0d2aa49bfbfc548c0a9f2196f4aa51f3ea
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact, batch-settlement

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