WhatsApp Node – Send a Single Message

Send a Single WhatsApp Message Using Node

Send one WhatsApp text message from your application, CRM, website, or backend system through a connected Libwana.Net WhatsApp Node device.

Before sending, get your API key from User Panel → Communication → API and keep it securely on your server.

Connect an active and accessible WhatsApp Node device to your Libwana.Net account before making the API request.

If you have several Node gateways, you may specify the Libwana.Net UID using a top-level gateway_identifier.

If no gateway UID is supplied, the preferred or default accessible Node gateway is selected.

API Endpoint

Required Headers

Windows CMD Example

curl.exe -X POST "https://libwana.net/api/whatsapp/send" -H "Api-key: YOUR_API_KEY" -H "Accept: application/json" -H "Content-Type: application/json" --data-raw "{\"method\":\"node\",\"contact\":[{\"number\":\"15551234567\",\"message\":\"Hello Alex, your order is ready.\"}]}"

Request Fields

Node Gateway Requirements

Make sure your WhatsApp Node device is connected and accessible before attempting to send a message.

Keep the Node session active so Libwana.Net can route the message through the connected WhatsApp account.

You should also respect WhatsApp account sending limits and appropriate recipient messaging practices.

Using It With Your Application or CRM

Trigger the HTTPS request from your application's backend, CRM workflow, or another server-side process.

Map the recipient phone number and message into the contact array.

Your application should prevent duplicate events, respect recipient consent, and handle API errors appropriately.

Check WhatsApp Message Status

After sending, use the returned message ID to check the WhatsApp message status.

Include your Api-key and Accept: application/json headers when checking the status.