SDK de TypeScript de Helius para Solana

import { createHelius } from "helius-sdk";

(async () => {
  const apiKey = ""; // From Helius dashboard
  const helius = createHelius({ apiKey });

  try {
    const assets = await helius.getAssetsByOwner({
      ownerAddress: "owner_address_goes_here",
      page: 1,
      limit: 50,
      sortBy: { sortBy: "created", sortDirection: "asc" },
    });

    console.log("Fetched assets:", assets);
  } catch (error) {
    console.error("Error:", error);
  }
})();

{
  "jsonrpc": "2.0",
  "error": {
    "code": -32001,
    "message": "Authentication failed. Missing or invalid API key."
  },
  "id": "1"
}