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n8n Workflow Automation + GST Maker

Workflow Pipelines

Build enterprise-grade automated invoicing, payment triggers, and reconciliation pipelines

n8n Tool Page

Automated Invoice & WhatsApp Pipeline Architecture

How n8n connects your sales channels with GST Maker APIs

1

Payment Event

Razorpay, Stripe, or bank webhook captures order

2

GST Maker Validation

Checks GSTIN, Place of Supply, and computes IGST/CGST

3

PDF Generation

Generates 2-copy compliant tax invoice with QR code

4

Dispatch & Sync

Emails PDF to customer and triggers WhatsApp alert

gst_maker_webhook_pipeline.json

Import this production workflow JSON directly into your n8n workspace

{
  "name": "GST Maker Live Invoice & WhatsApp Dispatch",
  "nodes": [
    {
      "name": "Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "parameters": {
        "path": "gst-invoice-created",
        "httpMethod": "POST",
        "responseMode": "onReceived"
      }
    },
    {
      "name": "Validate GSTIN & Tax Split",
      "type": "n8n-nodes-base.httpRequest",
      "parameters": {
        "url": "https://gstmaker.com/tools-api/gstin-decode",
        "method": "GET",
        "queryParameters": {
          "gstin": "={{ $json.body.customer_gstin }}"
        }
      }
    },
    {
      "name": "Send WhatsApp PDF Notification",
      "type": "n8n-nodes-base.httpRequest",
      "parameters": {
        "url": "https://api.whatsapp-gateway.com/v1/messages",
        "method": "POST"
      }
    }
  ]
}
How to Import into n8n:

1. Open your n8n Canvas → Click the top-right ... (Menu) → Select Import from Clipboard.

2. Paste this JSON snippet and configure your webhook credentials to begin capturing real-time sales events.

How to Setup n8n Workflows

Build automated business pipelines

  1. 1
    Deploy n8n Instance Launch an n8n container using Docker or register for an n8n Cloud workspace.
  2. 2
    Import Workflow Template Copy the workflow JSON from our n8n tool page and paste directly into your n8n canvas.
  3. 3
    Configure Webhooks & Credentials Add your WhatsApp provider API token (Twilio / WATI) and your GST Maker webhook URL.
  4. 4
    Activate Production Pipeline Switch workflow state from 'Inactive' to 'Active' to start processing live transactions 24/7.

Pro Tips for Production Pipelines

Enterprise reliability & security

  • Verify Webhook HMAC Signatures Always validate Razorpay / Stripe webhook signatures in n8n before triggering invoice generation to avoid fraudulent bills.
  • Store PDFs in Cloudflare R2 / S3 Pipe generated invoice binaries directly into object storage buckets so download links remain permanently accessible to customers.
  • Automate GSTR-1 Verification Runs Schedule a cron job in n8n on the 9th of every month to verify that all outgoing invoices have clean customer GSTIN records.
  • Use WhatsApp Interactive Templates Send WhatsApp messages with quick-action buttons ('Download PDF', 'Pay via UPI') for significantly higher payment conversion rates.