Send Template Message (Simple)

get

https://www.fast2sms.com/dev/whatsapp

This is a simple API for sending WhatsApp template messages using Fast2SMS format. If you need to send messages directly, consider using the META Format API (Advanced).

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Get Phone Number ID & Message ID using this API

Query Params

message_id

integer

required

Unique Fast2SMS Message ID of the template. Check WhatsApp Manager inside Fast2SMS Panel or use "Get WABA & Template Details" API

phone_number_id

string

required

WABA Phone Number ID.

numbers

string

required

Destination mobile number.

variables_values

string

Required if the template has variables ({{1}}, {{2}}). Join multiple values with a pipe |.

media_url

uri

Required if the template has a Header Media (Image/Video/PDF).

document_filename

string

(optional) To give PDF custom document title

udf1

string

User Defined Field 1 – Optional custom value passed via API and returned in the webhook for your internal reference or tracking.

udf2

string

User Defined Field 2 – Optional custom value passed via API and returned in the webhook for your internal reference or tracking.

udf3

string

User Defined Field 3 – Optional custom value passed via API and returned in the webhook for your internal reference or tracking.

Headers

Authorization

string

required

Defaults to YOUR_API_KEY

Your API Key.

Response

200Message Sent Successfully