WhatsApp SMS Service API Documentation

This document describes the REST API for the WhatsApp SMS Service, which acts as a gateway to send WhatsApp messages using MSG91 templates.

Base URL

http://betawhatsapp.tradhox.com/api/

(Or your local/production domain accordingly)

Endpoint: Send WhatsApp Message

Sends a WhatsApp message using a dynamically loaded MSG91 JSON template.

URL: /send/
Method: POST
Content-Type: application/json

Request Body Parameters

Parameter	Type	Required	Description
`mobile_number`	String	Yes	The recipient's mobile number, including the country code (e.g., `"919600494039"`).
`otp_code`	String	Yes	The dynamic variable value (e.g., OTP or verification code) to populate in the template.
`template_name`	String	No	The name of the MSG91 template to use. Must match a `.json` file located in the `template jsons/` directory. Defaults to `"mobile_number_verification"`.

Example Request

curl -X POST http://betawhatsapp.tradhox.com/api/send/ \
-H "Content-Type: application/json" \
-d '{
  "mobile_number": "919600494039",
  "otp_code": "123456",
  "template_name": "mobile_number_verification"
}'

Example Response (Success)

The API passes through the response from MSG91 directly.

Status Code: 200 OK

{
  "status": "success",
  "message": "Message successfully submitted."
}

Example Response (Failure/Missing Parameters)

Status Code: 400 Bad Request

{
  "error": "mobile_number and otp_code are required"
}

Example Response (Template Not Found)

Status Code: 400 Bad Request

{
  "status": "error",
  "message": "Template custom_promo not found"
}

Adding New Templates

To add support for a new MSG91 template:

Create a new .json file in the template jsons/ folder. The filename (without .json) will be the template_name used in the API request.
The JSON file must strictly match the MSG91 payload structure.
Keep the to and dynamic value fields empty in the template file, as the API service will automatically populate them dynamically at runtime!

Example file (template jsons/mobile_number_verification.json):

{
    "integrated_number": "918610694498",
    "content_type": "template",
    "payload": {
        "messaging_product": "whatsapp",
        "type": "template",
        "template": {
            "name": "mobile_number_verification",
            "language": {
                "code": "en",
                "policy": "deterministic"
            },
            "namespace": null,
            "to_and_components": [
                {
                    "to": [""],
                    "components": {
                        "body_1": {
                            "type": "text",
                            "value": ""
                        },
                        "button_1": {
                            "subtype": "url",
                            "type": "text",
                            "value": ""
                        }
                    }
                }
            ]
        }
    }
}

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