इनवॉइस जेनरेशन API

Authorization: Bearer isk_live_xxxxxxxxxxxxxxxxxxxxxxxx

curl -X POST https://app.invosend.com/api/invoices/generate-external \
  -H "Authorization: Bearer isk_live_xxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "customer_name": "Acme Corp",
    "customer_email": "billing@acme.com",
    "items": [
      { "description": "Consulting Services", "quantity": 2, "price": 40000, "tax_rate": 11 }
    ],
    "discount_total": 4000,
    "currency": "INR",
    "notes": "Thank you for your business."
  }'

curl -X POST https://app.invosend.com/api/invoices/generate-external \
  -H "Authorization: Bearer isk_live_xxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "customer_name": "Acme Corp",
    "customer_email": "billing@acme.com",
    "items": [
      { "description": "Monthly retainer", "quantity": 1, "price": 200000 }
    ],
    "currency": "INR",
    "recurring_interval": "monthly",
    "recurring_count": 6
  }'

{
  "data": {
    "id": "cjld2cjxh0000qzrmn831i7rn",
    "invoice_number": "INV-1-202609-0016",
    "pdf_url": "https://cdn.invosend.com/company/1/pdf/Invoice_INV_1_202609_0016_UNPAID_0da2beeabb.pdf",
    "credits_remaining": 24,
    "is_recurring": false,
    "template": {
      "id": "k3p9x2m7c0000abcd1234efgh",
      "name": "Classic",
      "source": "system_default"
    }
  }
}

{
  "id": "evt_9f2c1b7a4e3d5c6b8a1f0e2d",
  "object": "event",
  "type": "invoice.paid",
  "created": "2026-10-01T09:30:12.000Z",
  "data": {
    "object": {
      "id": "cjld2cjxh0000qzrmn831i7rn",
      "invoice_number": "INV-1-202610-0007",
      "customer_name": "Acme Corp",
      "customer_email": "billing@acme.com",
      "currency": "USD",
      "subtotal": 500,
      "discount_total": 0,
      "tax_rate": 0,
      "tax_amount": 0,
      "amount": 500,
      "amount_paid": 500,
      "amount_credited": 0,
      "amount_received": 500,
      "invoice_status": "paid",
      "is_archived": false,
      "is_recurring": false,
      "recurring_interval": "none",
      "issue_date": "2026-10-01T02:15:40.000Z",
      "due_date": "2026-10-15",
      "paid_at": "2026-10-01T09:30:11.000Z",
      "pdf_url": "https://cdn.invosend.com/company/1/pdf/Invoice_INV_1_202610_0007_PAID.pdf",
      "pdf_status": "ready"
    },
    "previous_status": "unpaid"
  }
}

POST /your/webhook/url
Content-Type: application/json
Invosend-Event: invoice.paid
Invosend-Delivery: evt_9f2c1b7a4e3d5c6b8a1f0e2d
Invosend-Signature: t=1790847012,v1=5b1d...e9a2

// Node.js
import crypto from "crypto";

function verify(rawBody, header, secret) {
  const parts = Object.fromEntries(header.split(",").map((p) => p.split("=")));
  if (Math.abs(Date.now() / 1000 - Number(parts.t)) > 300) return false;
  const expected = crypto
    .createHmac("sha256", secret)
    .update(parts.t + "." + rawBody)
    .digest("hex");
  return crypto.timingSafeEqual(Buffer.from(expected), Buffer.from(parts.v1));
}