Move money across the world in seconds.

curl -X POST https://api.babyfx.org/v1/invoices   -H "Authorization: Bearer bf_sk_test_..."   -H "Idempotency-Key: inv_2026_07_abc123"   -H "Content-Type: application/json"   -d '{
    "merchant_id": "m_8x2kp",
    "fiat_amount": 25.00,
    "fiat_currency": "USD",
    "reference": "ORDER-2026-07-0042"
  }'

{
  "id": "inv_3f9c1e8b7d",
  "status": "PENDING",
  "baby_amount_wei": "12345600000000000000000",
  "deposit_address": "0x7cb61d4117ae31a12e393a1cfa3bac666481d02e",
  "lookup_token": "q9w8e7r6t5y4u3i2o1p0",
  "rate_snapshot": "0.000000000002025",
  "rate_signature": "0x9c8b7a6f...",
  "expires_at": "2026-07-15T10:24:00Z"
}

import { BabyFxPay } from "@babyfx/pay";

const pay = new BabyFxPay({ apiKey: process.env.BABYFX_API_KEY });

const invoice = await pay.invoices.create({
  merchantId: "m_8x2kp",
  fiatAmount: 25.00,
  fiatCurrency: "USD",
  reference: "ORDER-2026-07-0042",
}, { idempotencyKey: "inv_2026_07_abc123" });

// Display invoice.depositAddress as a QR code.
// Subscribe to invoice.paid() to fire your fulfillment webhook.

// Bank-side: receive a signed webhook from BabyFX Pay.
import { verifyWebhook } from "@babyfx/pay/webhooks";

export async function POST(req: Request) {
  const raw = await req.text();
  const ok = verifyWebhook(raw, {
    secret: process.env.BABYFX_WEBHOOK_SECRET,
    tolerance: 300, // seconds
  });
  if (!ok) return new Response("bad signature", { status: 401 });

  const event = JSON.parse(raw);
  if (event.type === "invoice.confirmed") {
    await ledger.credit({
      customerId: event.data.metadata.customer_id,
      amount: event.data.fiat_amount,
      currency: event.data.fiat_currency,
      txHash: event.data.paid_tx_hash,
    });
  }
  return new Response("ok");
}