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Format of WhatsApp API for Sending Message

Merciglobal ERP

1. Overview

This document explains the format used to send WhatsApp messages from Merciglobal ERP using the following webhook endpoint:

https://webhooks.whatapi.in/webhook/6711cb08774577ab9b3e479c?mobile=91XXMOBILEXX&msg=XXMESSAGEXX&url=XXURLXX&filename=XXFILENAMEXX

The API is triggered using an HTTP GET request with query parameters.

2. API Endpoint Structure

Base URL

https://webhooks.whatapi.in/webhook/6711cb08774577ab9b3e479c

Query Parameters

Parameter Required Description
mobile Yes Recipient mobile number with country code (without + sign)
msg Yes Message text (must be URL encoded)
url No Publicly accessible file URL (for media/document sending)
filename No Display name of the file attachment

3. Parameter Details

3.1 mobile

  • Format: Country code + mobile number
  • Example: 919876543210

3.2 msg

  • Plain text message
  • Must be URL encoded

  • Example:

  • Original: Hello from Merciglobal ERP

  • Encoded: Hello%20from%20Merciglobal%20ERP

3.3 url (Optional)

  • Used when sending media or document
  • Must be a publicly accessible URL
  • Must be URL encoded

3.4 filename (Optional)

  • Name shown to recipient
  • Example: invoice123.pdf

4. Integration Flow in Merciglobal ERP

  1. Merciglobal Cloud ERP executes the API automatically, internally, replacing the parameter values.
  2. ERP generates message content.
  3. ERP encodes parameters.
  4. ERP constructs API URL.
  5. HTTP request is sent to the webhook endpoint.
  6. Response is logged in system.