Build portfolio & analytics apps

const BASE = "https://public-api.etoro.com/api/v1";
const headers = {
  "x-api-key": process.env.ETORO_API_KEY,
  "x-user-key": process.env.ETORO_USER_KEY,
  "x-request-id": crypto.randomUUID(),
};

// Get portfolio snapshot
const portfolio = await fetch(
  `${BASE}/trading/info/demo/portfolio`,
  { headers }
).then(r => r.json());

const { equity, pnl, positions } = portfolio.data;
console.log(`Equity: $${equity} | PnL: $${pnl}`);

// Get instrument metadata to map IDs to names
const instruments = await fetch(
  `${BASE}/market-data/instruments`,
  { headers }
).then(r => r.json());

for (const pos of positions) {
  const inst = instruments.data.find(
    i => i.instrumentId === pos.instrumentId
  );
  console.log(`${inst?.name}: ${pos.pnl}`);
}

// Get OHLC candles for charting
const candles = await fetch(
  `${BASE}/market-data/instruments/history/candles?instrumentId=1001&period=1d&count=30`,
  { headers }
).then(r => r.json());

console.log(`Last 30 days: ${candles.data.length} candles`);