How to Integrate Rapiwa with n8n: Complete Step-by-Step Tutorial

You can integrate Rapiwa with n8n in under 10 minutes using an HTTP Request node. Configure the node with Rapiwa's endpoint, add your Bearer token, and map your data fields — then any n8n trigger can send WhatsApp messages automatically. Rapiwa ($5/month) has 10 pre-built n8n templates you can import with one click to skip all manual configuration.

What You Need

Rapiwa account — free 3-day trial
n8n instance (Cloud free tier or self-hosted)
Rapiwa API key (Dashboard → API Keys)
WhatsApp number connected in Rapiwa dashboard

Method 1: Import a Pre-Built Template (Fastest — 5 Minutes)

Rapiwa has 10 ready-made n8n templates at n8n.io/creators/rapiwa:

Go to the template page
Click Use this workflow
Open the HTTP Request node in the workflow
Update the Authorization header with your Rapiwa API key
Configure the trigger (WooCommerce webhook, Google Calendar, etc.)
Activate

Most popular templates:

WooCommerce invoice delivery — 1,306 installs
Google Calendar + Gemini AI reminders — 538 installs
GPT-4 WhatsApp support bot — 474 installs

Method 2: Add Rapiwa to Any Custom Workflow

Step 1: Add an HTTP Request Node

In your n8n workflow canvas:

Click the + button to add a new node
Search for HTTP Request
Click to add it

Step 2: Configure the Rapiwa Node

In the HTTP Request node settings:

Setting	Value
Method	`POST`
URL	`https://app.rapiwa.com/send-message`
Authentication	`Header Auth`
Header Name	`Authorization`
Header Value	`Bearer YOUR_API_KEY`
Body Content Type	`JSON`

Request body (JSON):

{
  "number": "={{ $json.customer_phone }}",
  "message": "={{ $json.message_text }}"
}

Replace $json.customer_phone and $json.message_text with your actual field paths from upstream nodes.

Step 3: Map Data from Your Trigger

n8n uses {{ $json.fieldname }} expressions to reference data from previous nodes:

Data to include	n8n expression example
Customer phone	`{{ $json.billing.phone }}`
Customer name	`{{ $json.billing.first_name }}`
Order ID	`{{ $json.id }}`
Order total	`{{ $json.total }}`
Custom text	`Hi {{ $json.billing.first_name }}! Order #{{ $json.id }} confirmed.`

Step 4: Test the Node

Click Test node (or Execute Node) in n8n
Check the output — you should see {"status": "success", "messageId": "..."}
Check your WhatsApp — the message should arrive within seconds

Complete Example: WooCommerce Order → WhatsApp

Here is a complete workflow JSON you can paste into n8n:

{
  "name": "WooCommerce Order → WhatsApp (Rapiwa)",
  "nodes": [
    {
      "name": "WooCommerce Webhook",
      "type": "n8n-nodes-base.webhook",
      "parameters": {
        "httpMethod": "POST",
        "path": "woocommerce-order",
        "responseMode": "onReceived"
      },
      "position": [200, 300]
    },
    {
      "name": "Format Phone Number",
      "type": "n8n-nodes-base.set",
      "parameters": {
        "values": {
          "string": [
            {
              "name": "clean_phone",
              "value": "={{ $json.billing.phone.replace(/[^0-9]/g, '') }}"
            },
            {
              "name": "message",
              "value": "=*Order Confirmed!* 🛒\n\nHi {{ $json.billing.first_name }}!\nOrder #{{ $json.id }}\nTotal: ${{ $json.total }}\n\nThank you for your order!"
            }
          ]
        }
      },
      "position": [400, 300]
    },
    {
      "name": "Send WhatsApp via Rapiwa",
      "type": "n8n-nodes-base.httpRequest",
      "parameters": {
        "method": "POST",
        "url": "https://app.rapiwa.com/send-message",
        "authentication": "headerAuth",
        "headerAuthName": "Authorization",
        "headerAuthValue": "Bearer YOUR_API_KEY",
        "bodyContentType": "json",
        "jsonBody": "={{ JSON.stringify({number: $json.clean_phone, message: $json.message}) }}"
      },
      "position": [600, 300]
    }
  ]
}

Receive WhatsApp Messages in n8n (Webhook)

To receive incoming WhatsApp messages in n8n:

Add a Webhook node to your workflow
Set method to POST, path to e.g. rapiwa-incoming
Copy the webhook URL (e.g. https://your-n8n.cloud/webhook/rapiwa-incoming)
In Rapiwa dashboard → Webhooks → add this URL
Activate the workflow

When someone sends a WhatsApp message to your Rapiwa number, n8n receives:

{
  "event": "message.received",
  "from": "8801234567890",
  "fromName": "Customer Name",
  "message": "Hi, I need help with my order",
  "timestamp": "2026-05-31T10:00:00Z"
}

Building a Two-Way WhatsApp Bot in n8n

Combining send and receive:

[Rapiwa Webhook] → [n8n processes message] → [Rapiwa HTTP Request sends reply]

Webhook node receives incoming message
IF node routes based on message content
HTTP Request node sends reply via Rapiwa

// In the HTTP Request "reply" node:
{
  "number": "={{ $('Webhook').item.json.from }}",
  "message": "Thanks for your message! We'll reply within 1 hour."
}

Common n8n + Rapiwa Issues

"Authentication failed" error:

Check your API key has no extra spaces
Ensure the header value is exactly Bearer YOUR_KEY (with space after "Bearer")

Empty phone number:

Check your data mapping — use n8n's input inspector to see the exact field names
Clean phone numbers with: {{ $json.phone.replace(/[^0-9]/g, '') }}

Workflow not triggering:

For webhooks: ensure your n8n instance is accessible from the internet
For scheduled triggers: check timezone settings in n8n

FAQ

Do I need to know how to code to use Rapiwa with n8n? No. Use any of the 10 pre-built templates — import, add your API key, activate. Zero coding required.

Is n8n free to use with Rapiwa? n8n has a free self-hosted version (unlimited) and a free Cloud tier (5,000 executions/month). For most small business use cases, the free tier is sufficient.

Can I use Rapiwa with n8n's WooCommerce trigger? Yes. The WooCommerce trigger or webhook node fires when orders are created/updated, then the HTTP Request node sends the WhatsApp message via Rapiwa.

How do I format messages in n8n for WhatsApp? Use WhatsApp markdown in your message text: *bold*, _italic_, ~strikethrough~. Use \n for line breaks in n8n expressions.

What are the most popular Rapiwa + n8n workflows? WooCommerce invoice delivery (1,306 installs), Google Calendar reminders (538), GPT-4 support bot (474), and WooCommerce cross-sell (311). See all at n8n.io/creators/rapiwa.