index.js

// retailerapi quickstart — Node 20+
//
// Look up a product, print title + cheapest price across retailers.
// Run: RETAILERAPI_KEY=rk_live_… node index.js

const KEY = process.env.RETAILERAPI_KEY;
if (!KEY) {
  console.error('RETAILERAPI_KEY env var required. Get one at https://app.retailerapi.com/signup');
  process.exit(1);
}

const id = process.argv[2] ?? '19667262713';

async function main() {
  const r = await fetch(`https://api.retailerapi.com/v1/products/${id}?include_cross_retailer=true`, {
    headers: { Authorization: `Bearer ${KEY}` },
  });
  if (!r.ok) {
    const body = await r.text();
    throw new Error(`${r.status}: ${body}`);
  }
  const p = await r.json();

  console.log(`${p.title}`);
  console.log(`  brand:        ${p.brand ?? '—'}`);
  console.log(`  walmart:      $${p.current_price?.toFixed(2) ?? '—'}  (${p.walmart_url})`);

  // Cheapest non-Walmart cell where status === 'ok'
  const others = (p.cross_retailer ?? []).filter((c) => c.status === 'ok' && typeof c.price === 'number');
  if (others.length) {
    const cheapest = others.reduce((min, c) => (c.price < min.price ? c : min), { price: Infinity });
    console.log(`  cheapest off-Walmart: $${cheapest.price.toFixed(2)} at ${cheapest.retailer}`);
  } else {
    console.log(`  cross-retailer: indexing — call again in a few seconds`);
  }

  console.log(`\ntokens_consumed: ${p.tokens_consumed} · tokens_remaining: ${p.tokens_remaining}`);
}

main().catch((e) => {
  console.error('ERR:', e.message);
  process.exit(1);
});